Error 500 after upgrading
Asked by Stefan Zukin:

I upgraded today from 7.2 to 7.18.2 on my confluence server and am now getting this error. (below)

After upgrading, I made the changes to my server.xml file to match my reverse proxy and also copied in the mysql connector .jar files as recommended in the installation guide.

I'm not sure exactly why this error is happening, but I think it's to do with something going wrong connecting to my mysql database. The database setup page (<https://confluence.atlassian.com/doc/database-setup-for-mysql-128747.html>) recommends to re-run the mysql installation wizard to re-configure an existing database, but I'm not sure exactly where to get that or how to run it for ubuntu linux. My mysql version is 5.7.38.

Error message:

HTTP Status 500 -- Internal Server Error {#toc-hId--551030889}
--------------------------------------------------------------

*** ** * ** ***

**Type** Exception Report

**Message** An exception occurred processing \[errors.jsp\] at line \[13\]

**Description** The server encountered an unexpected condition that prevented it from fulfilling the request.

**Exception**

```
org.apache.jasper.JasperException: An exception occurred processing [errors.jsp] at line [13]10:     <link rel="shortcut icon" href="johnson/fav-confluence.ico">11:     <%12:         JohnsonPageI18NProvider johnsonPageI18NProvider = (JohnsonPageI18NProvider) BootstrapUtils.getBootstrapContext().getBean("johnsonPageI18NProvider");13:         String translations = johnsonPageI18NProvider.getTranslations().serialize();14:     %>15:     <script>16:         window.i18n = <%=translations%>;Stacktrace:	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:610)	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:499)	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter$SwapOnBootstrapFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:55)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:35)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.seraph.filter.BaseLoginFilter.doFilter(BaseLoginFilter.java:148)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:47)	com.atlassian.confluence.util.ClusterHeaderFilter.doFilter(ClusterHeaderFilter.java:57)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.core.filters.cache.AbstractCachingFilter.doFilter(AbstractCachingFilter.java:31)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:47)	com.atlassian.confluence.tenant.TenantGateFilter.lambda$doFilter$0(TenantGateFilter.java:35)	com.atlassian.confluence.impl.tenant.ThreadLocalTenantGate.lambda$wrap$0(ThreadLocalTenantGate.java:25)	com.atlassian.confluence.tenant.TenantGateFilter.doFilter(TenantGateFilter.java:37)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.MobileAppRequestFilter.doFilter(MobileAppRequestFilter.java:36)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.internal.web.filter.spring.IgnoreWebAsyncManagerFilter.doFilter(IgnoreWebAsyncManagerFilter.java:59)	com.atlassian.confluence.web.filter.validateparam.RequestParamValidationFilter.doFilter(RequestParamValidationFilter.java:51)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.filter.TranslationModeFilter.doFilter(TranslationModeFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.plugin.servlet.filter.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:71)	com.atlassian.confluence.web.filter.LanguageExtractionFilter.doFilter(LanguageExtractionFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.impl.vcache.VCacheRequestContextFilter.doFilter(VCacheRequestContextFilter.java:58)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.LoggingContextFilter.doFilter(LoggingContextFilter.java:33)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.RequestCacheThreadLocalFilter.doFilter(RequestCacheThreadLocalFilter.java:67)	com.atlassian.confluence.web.filter.ZipkinTracingFilter.doFilter(ZipkinTracingFilter.java:51)	com.atlassian.confluence.web.filter.ResponseOutputStreamFilter.doFilter(ResponseOutputStreamFilter.java:25)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.ConfluenceJohnsonFilter.doFilter(ConfluenceJohnsonFilter.java:30)	com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:37)	com.atlassian.confluence.servlet.FourOhFourErrorLoggingFilter.doFilter(FourOhFourErrorLoggingFilter.java:64)	com.atlassian.confluence.internal.diagnostics.HttpRequestMonitoringFilter.doFilter(HttpRequestMonitoringFilter.java:35)	com.atlassian.confluence.web.filter.DebugFilter.doFilter(DebugFilter.java:63)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)
```

**Root Cause**

```
org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is net.sf.hibernate.exception.GenericJDBCException: Unable to acquire JDBC Connection	org.springframework.orm.hibernate.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:476)	com.atlassian.confluence.impl.hibernate.ConfluenceHibernateTransactionManager.doBegin(ConfluenceHibernateTransactionManager.java:41)	org.springframework.transaction.support.AbstractPlatformTransactionManager.startTransaction(AbstractPlatformTransactionManager.java:400)	org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373)	jdk.internal.reflect.GeneratedMethodAccessor105.invoke(Unknown Source)	java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	java.base/java.lang.reflect.Method.invoke(Unknown Source)	org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)	com.sun.proxy.$Proxy80.getTransaction(Unknown Source)	org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:595)	org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:382)	org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)	com.sun.proxy.$Proxy87.retrieve(Unknown Source)	com.atlassian.confluence.impl.bandana.MeteredBandanaPersister.retrieve(MeteredBandanaPersister.java:36)	com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:32)	com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:24)	com.atlassian.confluence.impl.settings.BandanaGlobalSettingsManager.getGlobalSettings(BandanaGlobalSettingsManager.java:43)	com.atlassian.confluence.impl.settings.DelegatingLegacySettingsManager.getGlobalSettings(DelegatingLegacySettingsManager.java:57)	com.atlassian.confluence.languages.DefaultLocaleManager.getSiteDefaultLocale(DefaultLocaleManager.java:227)	com.atlassian.confluence.languages.DefaultLocaleManager.resolveLocaleInfo(DefaultLocaleManager.java:157)	com.atlassian.confluence.languages.DefaultLocaleManager.lambda$getLocaleInfo$2(DefaultLocaleManager.java:139)	java.base/java.util.HashMap.computeIfAbsent(Unknown Source)	com.atlassian.confluence.languages.DefaultLocaleManager.getLocaleInfo(DefaultLocaleManager.java:139)	com.atlassian.confluence.languages.DefaultLocaleManager.getLocale(DefaultLocaleManager.java:211)	com.atlassian.confluence.util.i18n.UserI18NBeanFactory.getUserLocale(UserI18NBeanFactory.java:44)	com.atlassian.confluence.util.i18n.UserI18NBeanFactory.getI18NBean(UserI18NBeanFactory.java:34)	com.atlassian.confluence.util.i18n.DynamicI18NBeanFactory.getI18NBean(DynamicI18NBeanFactory.java:89)	com.atlassian.confluence.impl.health.web.JohnsonPageI18NProvider.getTranslations(JohnsonPageI18NProvider.java:62)	org.apache.jsp.errors_jsp._jspService(errors_jsp.java:140)	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter$SwapOnBootstrapFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:55)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:35)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.seraph.filter.BaseLoginFilter.doFilter(BaseLoginFilter.java:148)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:47)	com.atlassian.confluence.util.ClusterHeaderFilter.doFilter(ClusterHeaderFilter.java:57)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.core.filters.cache.AbstractCachingFilter.doFilter(AbstractCachingFilter.java:31)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:47)	com.atlassian.confluence.tenant.TenantGateFilter.lambda$doFilter$0(TenantGateFilter.java:35)	com.atlassian.confluence.impl.tenant.ThreadLocalTenantGate.lambda$wrap$0(ThreadLocalTenantGate.java:25)	com.atlassian.confluence.tenant.TenantGateFilter.doFilter(TenantGateFilter.java:37)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.MobileAppRequestFilter.doFilter(MobileAppRequestFilter.java:36)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.internal.web.filter.spring.IgnoreWebAsyncManagerFilter.doFilter(IgnoreWebAsyncManagerFilter.java:59)	com.atlassian.confluence.web.filter.validateparam.RequestParamValidationFilter.doFilter(RequestParamValidationFilter.java:51)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.filter.TranslationModeFilter.doFilter(TranslationModeFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.plugin.servlet.filter.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:71)	com.atlassian.confluence.web.filter.LanguageExtractionFilter.doFilter(LanguageExtractionFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.impl.vcache.VCacheRequestContextFilter.doFilter(VCacheRequestContextFilter.java:58)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.LoggingContextFilter.doFilter(LoggingContextFilter.java:33)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.RequestCacheThreadLocalFilter.doFilter(RequestCacheThreadLocalFilter.java:67)	com.atlassian.confluence.web.filter.ZipkinTracingFilter.doFilter(ZipkinTracingFilter.java:51)	com.atlassian.confluence.web.filter.ResponseOutputStreamFilter.doFilter(ResponseOutputStreamFilter.java:25)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.ConfluenceJohnsonFilter.doFilter(ConfluenceJohnsonFilter.java:30)	com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:37)	com.atlassian.confluence.servlet.FourOhFourErrorLoggingFilter.doFilter(FourOhFourErrorLoggingFilter.java:64)	com.atlassian.confluence.internal.diagnostics.HttpRequestMonitoringFilter.doFilter(HttpRequestMonitoringFilter.java:35)	com.atlassian.confluence.web.filter.DebugFilter.doFilter(DebugFilter.java:63)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)
```

**Root Cause**

```
net.sf.hibernate.exception.GenericJDBCException: Unable to acquire JDBC Connection	org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:47)	org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:111)	org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:97)	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:109)	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:136)	org.hibernate.internal.SessionImpl.connection(SessionImpl.java:524)	com.atlassian.hibernate.adapter.adapters.session.SessionV2Adapter.connection(SessionV2Adapter.java:159)	org.springframework.orm.hibernate.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:425)	com.atlassian.confluence.impl.hibernate.ConfluenceHibernateTransactionManager.doBegin(ConfluenceHibernateTransactionManager.java:41)	org.springframework.transaction.support.AbstractPlatformTransactionManager.startTransaction(AbstractPlatformTransactionManager.java:400)	org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373)	jdk.internal.reflect.GeneratedMethodAccessor105.invoke(Unknown Source)	java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	java.base/java.lang.reflect.Method.invoke(Unknown Source)	org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)	com.sun.proxy.$Proxy80.getTransaction(Unknown Source)	org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:595)	org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:382)	org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)	com.sun.proxy.$Proxy87.retrieve(Unknown Source)	com.atlassian.confluence.impl.bandana.MeteredBandanaPersister.retrieve(MeteredBandanaPersister.java:36)	com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:32)	com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:24)	com.atlassian.confluence.impl.settings.BandanaGlobalSettingsManager.getGlobalSettings(BandanaGlobalSettingsManager.java:43)	com.atlassian.confluence.impl.settings.DelegatingLegacySettingsManager.getGlobalSettings(DelegatingLegacySettingsManager.java:57)	com.atlassian.confluence.languages.DefaultLocaleManager.getSiteDefaultLocale(DefaultLocaleManager.java:227)	com.atlassian.confluence.languages.DefaultLocaleManager.resolveLocaleInfo(DefaultLocaleManager.java:157)	com.atlassian.confluence.languages.DefaultLocaleManager.lambda$getLocaleInfo$2(DefaultLocaleManager.java:139)	java.base/java.util.HashMap.computeIfAbsent(Unknown Source)	com.atlassian.confluence.languages.DefaultLocaleManager.getLocaleInfo(DefaultLocaleManager.java:139)	com.atlassian.confluence.languages.DefaultLocaleManager.getLocale(DefaultLocaleManager.java:211)	com.atlassian.confluence.util.i18n.UserI18NBeanFactory.getUserLocale(UserI18NBeanFactory.java:44)	com.atlassian.confluence.util.i18n.UserI18NBeanFactory.getI18NBean(UserI18NBeanFactory.java:34)	com.atlassian.confluence.util.i18n.DynamicI18NBeanFactory.getI18NBean(DynamicI18NBeanFactory.java:89)	com.atlassian.confluence.impl.health.web.JohnsonPageI18NProvider.getTranslations(JohnsonPageI18NProvider.java:62)	org.apache.jsp.errors_jsp._jspService(errors_jsp.java:140)	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter$SwapOnBootstrapFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:55)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:35)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.seraph.filter.BaseLoginFilter.doFilter(BaseLoginFilter.java:148)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:47)	com.atlassian.confluence.util.ClusterHeaderFilter.doFilter(ClusterHeaderFilter.java:57)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.core.filters.cache.AbstractCachingFilter.doFilter(AbstractCachingFilter.java:31)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:47)	com.atlassian.confluence.tenant.TenantGateFilter.lambda$doFilter$0(TenantGateFilter.java:35)	com.atlassian.confluence.impl.tenant.ThreadLocalTenantGate.lambda$wrap$0(ThreadLocalTenantGate.java:25)	com.atlassian.confluence.tenant.TenantGateFilter.doFilter(TenantGateFilter.java:37)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.MobileAppRequestFilter.doFilter(MobileAppRequestFilter.java:36)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.internal.web.filter.spring.IgnoreWebAsyncManagerFilter.doFilter(IgnoreWebAsyncManagerFilter.java:59)	com.atlassian.confluence.web.filter.validateparam.RequestParamValidationFilter.doFilter(RequestParamValidationFilter.java:51)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.filter.TranslationModeFilter.doFilter(TranslationModeFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.plugin.servlet.filter.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:71)	com.atlassian.confluence.web.filter.LanguageExtractionFilter.doFilter(LanguageExtractionFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.impl.vcache.VCacheRequestContextFilter.doFilter(VCacheRequestContextFilter.java:58)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.LoggingContextFilter.doFilter(LoggingContextFilter.java:33)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.RequestCacheThreadLocalFilter.doFilter(RequestCacheThreadLocalFilter.java:67)	com.atlassian.confluence.web.filter.ZipkinTracingFilter.doFilter(ZipkinTracingFilter.java:51)	com.atlassian.confluence.web.filter.ResponseOutputStreamFilter.doFilter(ResponseOutputStreamFilter.java:25)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.ConfluenceJohnsonFilter.doFilter(ConfluenceJohnsonFilter.java:30)	com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:37)	com.atlassian.confluence.servlet.FourOhFourErrorLoggingFilter.doFilter(FourOhFourErrorLoggingFilter.java:64)	com.atlassian.confluence.internal.diagnostics.HttpRequestMonitoringFilter.doFilter(HttpRequestMonitoringFilter.java:35)	com.atlassian.confluence.web.filter.DebugFilter.doFilter(DebugFilter.java:63)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)
```

**Root Cause**

```
java.sql.SQLException: Connections could not be acquired from the underlying database!	com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:118)	com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:692)	com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:140)	net.sf.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:37)	com.atlassian.hibernate.adapter.adapters.ConnectionProviderV5Adapter.getConnection(ConnectionProviderV5Adapter.java:35)	java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	java.base/java.lang.reflect.Method.invoke(Unknown Source)	org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)	org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)	org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:58)	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)	org.springframework.aop.framework.adapter.ThrowsAdviceInterceptor.invoke(ThrowsAdviceInterceptor.java:113)	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)	com.sun.proxy.$Proxy342.getConnection(Unknown Source)	org.hibernate.internal.NonContextualJdbcConnectionAccess.obtainConnection(NonContextualJdbcConnectionAccess.java:35)	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:106)	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:136)	org.hibernate.internal.SessionImpl.connection(SessionImpl.java:524)	com.atlassian.hibernate.adapter.adapters.session.SessionV2Adapter.connection(SessionV2Adapter.java:159)	org.springframework.orm.hibernate.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:425)	com.atlassian.confluence.impl.hibernate.ConfluenceHibernateTransactionManager.doBegin(ConfluenceHibernateTransactionManager.java:41)	org.springframework.transaction.support.AbstractPlatformTransactionManager.startTransaction(AbstractPlatformTransactionManager.java:400)	org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373)	jdk.internal.reflect.GeneratedMethodAccessor105.invoke(Unknown Source)	java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	java.base/java.lang.reflect.Method.invoke(Unknown Source)	org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)	com.sun.proxy.$Proxy80.getTransaction(Unknown Source)	org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:595)	org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:382)	org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)	com.sun.proxy.$Proxy87.retrieve(Unknown Source)	com.atlassian.confluence.impl.bandana.MeteredBandanaPersister.retrieve(MeteredBandanaPersister.java:36)	com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:32)	com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:24)	com.atlassian.confluence.impl.settings.BandanaGlobalSettingsManager.getGlobalSettings(BandanaGlobalSettingsManager.java:43)	com.atlassian.confluence.impl.settings.DelegatingLegacySettingsManager.getGlobalSettings(DelegatingLegacySettingsManager.java:57)	com.atlassian.confluence.languages.DefaultLocaleManager.getSiteDefaultLocale(DefaultLocaleManager.java:227)	com.atlassian.confluence.languages.DefaultLocaleManager.resolveLocaleInfo(DefaultLocaleManager.java:157)	com.atlassian.confluence.languages.DefaultLocaleManager.lambda$getLocaleInfo$2(DefaultLocaleManager.java:139)	java.base/java.util.HashMap.computeIfAbsent(Unknown Source)	com.atlassian.confluence.languages.DefaultLocaleManager.getLocaleInfo(DefaultLocaleManager.java:139)	com.atlassian.confluence.languages.DefaultLocaleManager.getLocale(DefaultLocaleManager.java:211)	com.atlassian.confluence.util.i18n.UserI18NBeanFactory.getUserLocale(UserI18NBeanFactory.java:44)	com.atlassian.confluence.util.i18n.UserI18NBeanFactory.getI18NBean(UserI18NBeanFactory.java:34)	com.atlassian.confluence.util.i18n.DynamicI18NBeanFactory.getI18NBean(DynamicI18NBeanFactory.java:89)	com.atlassian.confluence.impl.health.web.JohnsonPageI18NProvider.getTranslations(JohnsonPageI18NProvider.java:62)	org.apache.jsp.errors_jsp._jspService(errors_jsp.java:140)	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter$SwapOnBootstrapFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:55)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:35)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.seraph.filter.BaseLoginFilter.doFilter(BaseLoginFilter.java:148)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:47)	com.atlassian.confluence.util.ClusterHeaderFilter.doFilter(ClusterHeaderFilter.java:57)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.core.filters.cache.AbstractCachingFilter.doFilter(AbstractCachingFilter.java:31)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:47)	com.atlassian.confluence.tenant.TenantGateFilter.lambda$doFilter$0(TenantGateFilter.java:35)	com.atlassian.confluence.impl.tenant.ThreadLocalTenantGate.lambda$wrap$0(ThreadLocalTenantGate.java:25)	com.atlassian.confluence.tenant.TenantGateFilter.doFilter(TenantGateFilter.java:37)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.MobileAppRequestFilter.doFilter(MobileAppRequestFilter.java:36)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.internal.web.filter.spring.IgnoreWebAsyncManagerFilter.doFilter(IgnoreWebAsyncManagerFilter.java:59)	com.atlassian.confluence.web.filter.validateparam.RequestParamValidationFilter.doFilter(RequestParamValidationFilter.java:51)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.filter.TranslationModeFilter.doFilter(TranslationModeFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.plugin.servlet.filter.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:71)	com.atlassian.confluence.web.filter.LanguageExtractionFilter.doFilter(LanguageExtractionFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.impl.vcache.VCacheRequestContextFilter.doFilter(VCacheRequestContextFilter.java:58)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.LoggingContextFilter.doFilter(LoggingContextFilter.java:33)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.RequestCacheThreadLocalFilter.doFilter(RequestCacheThreadLocalFilter.java:67)	com.atlassian.confluence.web.filter.ZipkinTracingFilter.doFilter(ZipkinTracingFilter.java:51)	com.atlassian.confluence.web.filter.ResponseOutputStreamFilter.doFilter(ResponseOutputStreamFilter.java:25)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.ConfluenceJohnsonFilter.doFilter(ConfluenceJohnsonFilter.java:30)	com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:37)	com.atlassian.confluence.servlet.FourOhFourErrorLoggingFilter.doFilter(FourOhFourErrorLoggingFilter.java:64)	com.atlassian.confluence.internal.diagnostics.HttpRequestMonitoringFilter.doFilter(HttpRequestMonitoringFilter.java:35)	com.atlassian.confluence.web.filter.DebugFilter.doFilter(DebugFilter.java:63)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)
```

**Root Cause**

```
com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.	com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1507)	com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:644)	com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:554)	com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutAndMarkConnectionInUse(C3P0PooledConnectionPool.java:758)	com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:685)	com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:140)	net.sf.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:37)	com.atlassian.hibernate.adapter.adapters.ConnectionProviderV5Adapter.getConnection(ConnectionProviderV5Adapter.java:35)	java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	java.base/java.lang.reflect.Method.invoke(Unknown Source)	org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)	org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)	org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:58)	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)	org.springframework.aop.framework.adapter.ThrowsAdviceInterceptor.invoke(ThrowsAdviceInterceptor.java:113)	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)	com.sun.proxy.$Proxy342.getConnection(Unknown Source)	org.hibernate.internal.NonContextualJdbcConnectionAccess.obtainConnection(NonContextualJdbcConnectionAccess.java:35)	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:106)	org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:136)	org.hibernate.internal.SessionImpl.connection(SessionImpl.java:524)	com.atlassian.hibernate.adapter.adapters.session.SessionV2Adapter.connection(SessionV2Adapter.java:159)	org.springframework.orm.hibernate.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:425)	com.atlassian.confluence.impl.hibernate.ConfluenceHibernateTransactionManager.doBegin(ConfluenceHibernateTransactionManager.java:41)	org.springframework.transaction.support.AbstractPlatformTransactionManager.startTransaction(AbstractPlatformTransactionManager.java:400)	org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373)	jdk.internal.reflect.GeneratedMethodAccessor105.invoke(Unknown Source)	java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	java.base/java.lang.reflect.Method.invoke(Unknown Source)	org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)	com.sun.proxy.$Proxy80.getTransaction(Unknown Source)	org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:595)	org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:382)	org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)	com.sun.proxy.$Proxy87.retrieve(Unknown Source)	com.atlassian.confluence.impl.bandana.MeteredBandanaPersister.retrieve(MeteredBandanaPersister.java:36)	com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:32)	com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:24)	com.atlassian.confluence.impl.settings.BandanaGlobalSettingsManager.getGlobalSettings(BandanaGlobalSettingsManager.java:43)	com.atlassian.confluence.impl.settings.DelegatingLegacySettingsManager.getGlobalSettings(DelegatingLegacySettingsManager.java:57)	com.atlassian.confluence.languages.DefaultLocaleManager.getSiteDefaultLocale(DefaultLocaleManager.java:227)	com.atlassian.confluence.languages.DefaultLocaleManager.resolveLocaleInfo(DefaultLocaleManager.java:157)	com.atlassian.confluence.languages.DefaultLocaleManager.lambda$getLocaleInfo$2(DefaultLocaleManager.java:139)	java.base/java.util.HashMap.computeIfAbsent(Unknown Source)	com.atlassian.confluence.languages.DefaultLocaleManager.getLocaleInfo(DefaultLocaleManager.java:139)	com.atlassian.confluence.languages.DefaultLocaleManager.getLocale(DefaultLocaleManager.java:211)	com.atlassian.confluence.util.i18n.UserI18NBeanFactory.getUserLocale(UserI18NBeanFactory.java:44)	com.atlassian.confluence.util.i18n.UserI18NBeanFactory.getI18NBean(UserI18NBeanFactory.java:34)	com.atlassian.confluence.util.i18n.DynamicI18NBeanFactory.getI18NBean(DynamicI18NBeanFactory.java:89)	com.atlassian.confluence.impl.health.web.JohnsonPageI18NProvider.getTranslations(JohnsonPageI18NProvider.java:62)	org.apache.jsp.errors_jsp._jspService(errors_jsp.java:140)	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter$SwapOnBootstrapFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:55)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.AbstractBootstrapHotSwappingFilter.doFilter(AbstractBootstrapHotSwappingFilter.java:35)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.seraph.filter.BaseLoginFilter.doFilter(BaseLoginFilter.java:148)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:47)	com.atlassian.confluence.util.ClusterHeaderFilter.doFilter(ClusterHeaderFilter.java:57)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.core.filters.cache.AbstractCachingFilter.doFilter(AbstractCachingFilter.java:31)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.johnson.plugin.servlet.filter.JohnsonServletFilterModuleContainerFilter.doFilter(JohnsonServletFilterModuleContainerFilter.java:47)	com.atlassian.confluence.tenant.TenantGateFilter.lambda$doFilter$0(TenantGateFilter.java:35)	com.atlassian.confluence.impl.tenant.ThreadLocalTenantGate.lambda$wrap$0(ThreadLocalTenantGate.java:25)	com.atlassian.confluence.tenant.TenantGateFilter.doFilter(TenantGateFilter.java:37)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.MobileAppRequestFilter.doFilter(MobileAppRequestFilter.java:36)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.internal.web.filter.spring.IgnoreWebAsyncManagerFilter.doFilter(IgnoreWebAsyncManagerFilter.java:59)	com.atlassian.confluence.web.filter.validateparam.RequestParamValidationFilter.doFilter(RequestParamValidationFilter.java:51)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.filter.TranslationModeFilter.doFilter(TranslationModeFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.plugin.servlet.filter.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:71)	com.atlassian.confluence.web.filter.LanguageExtractionFilter.doFilter(LanguageExtractionFilter.java:39)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.impl.vcache.VCacheRequestContextFilter.doFilter(VCacheRequestContextFilter.java:58)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.LoggingContextFilter.doFilter(LoggingContextFilter.java:33)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.util.RequestCacheThreadLocalFilter.doFilter(RequestCacheThreadLocalFilter.java:67)	com.atlassian.confluence.web.filter.ZipkinTracingFilter.doFilter(ZipkinTracingFilter.java:51)	com.atlassian.confluence.web.filter.ResponseOutputStreamFilter.doFilter(ResponseOutputStreamFilter.java:25)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)	com.atlassian.confluence.web.ConfluenceJohnsonFilter.doFilter(ConfluenceJohnsonFilter.java:30)	com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:37)	com.atlassian.confluence.servlet.FourOhFourErrorLoggingFilter.doFilter(FourOhFourErrorLoggingFilter.java:64)	com.atlassian.confluence.internal.diagnostics.HttpRequestMonitoringFilter.doFilter(HttpRequestMonitoringFilter.java:35)	com.atlassian.confluence.web.filter.DebugFilter.doFilter(DebugFilter.java:63)	com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32)
```

**Root Cause**

```
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failureThe last packet successfully received from the server was 1 milliseconds ago.  The last packet sent successfully to the server was 1 milliseconds ago.	jdk.internal.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)	java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)	java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)	com.mysql.jdbc.Util.handleNewInstance(Util.java:425)	com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:990)	com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:201)	com.mysql.jdbc.MysqlIO.negotiateSSLConnection(MysqlIO.java:4869)	com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1656)	com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1217)	com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2189)	com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2220)	com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2015)	com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:768)	com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)	jdk.internal.reflect.GeneratedConstructorAccessor117.newInstance(Unknown Source)	java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)	java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)	com.mysql.jdbc.Util.handleNewInstance(Util.java:425)	com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:385)	com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:323)	com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175)	com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220)	com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206)	com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)	com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1176)	com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1163)	com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)	com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1908)	com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
```

**Root Cause**

```
javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)	java.base/sun.security.ssl.HandshakeContext.<init>(Unknown Source)	java.base/sun.security.ssl.ClientHandshakeContext.<init>(Unknown Source)	java.base/sun.security.ssl.TransportContext.kickstart(Unknown Source)	java.base/sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)	java.base/sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)	com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:186)	com.mysql.jdbc.MysqlIO.negotiateSSLConnection(MysqlIO.java:4869)	com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1656)	com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1217)	com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2189)	com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2220)	com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2015)	com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:768)	com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)	jdk.internal.reflect.GeneratedConstructorAccessor117.newInstance(Unknown Source)	java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)	java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)	com.mysql.jdbc.Util.handleNewInstance(Util.java:425)	com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:385)	com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:323)	com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175)	com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220)	com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206)	com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)	com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1176)	com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1163)	com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)	com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1908)	com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
```

**Note** The full stack trace of the root cause is available in the server logs.

*** ** * ** ***

### Apache Tomcat/9.0.63 {#toc-hId-139530585}


Answers:
author: AAMIR ANSARI
body: Hi Stefan,

Thank you for sharing the detailed logs. The root cause of the issue is indeed the below snippet from the logs:

```
javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate) java.base/sun.security.ssl.HandshakeContext.<init>(Unknown Source) java.base/sun.security.ssl.ClientHandshakeContext.<init>(Unknown Source) java.base/sun.security.ssl.TransportContext.kickstart(Unknown Source) java.base/sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source) java.base/sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source) com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:186) com.mysql.jdbc.MysqlIO.negotiateSSLConnection(MysqlIO.java:4869)
```

The error matches the below KB

* <https://confluence.atlassian.com/confkb/confluence-is-not-starting-with-mysql-and-confluence-java-11-1064089758.html>

I'll suggest you pass the **useSSL=false** in the connection string like below to disable SSL on the database connection.

    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/confluencedb?useSSL=false</property>

The setting can be located under \<confleuence-home\>/confluence.cfg.xml file

Let me know how it goes.

Thanks,

Aamir


Tags: confluence-server

server