Added better debugging for opened connection
TODO: use only in debug mode
Added more infromation into: More than more thread is accessing this data unit
Merge branch 'release/UV_Core_v1.3.0' into feature/open_connection_debug
Merge branch 'release/UV_Core_v1.3.0' into feature/open_connection_debug
Update SqlAppenderImpl.java

Added try-catch into SqlAppenderImpl
Merge branch 'release/UV_Core_v1.3.0' into feature/open_connection_debug