get rid of two debug messages that show up on build start
Allow the Oracle datasources to retry queries and commits for some whitelisted errors
Re-throw exceptions other than the one we're looking for
pattern was any
db_retry_time => db_retry_sec
install observer on parent class instead of caller

If observer was added to $self then it would block multiple data sources
from being able to have retriable operations.
remove commented out ORA errors
certain oracle errors can now be retried