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If you get an exception similar to one of the following:

or

This document will outline the steps to take to increasing logging on your system. This additional logging will help us work out the cause of this error.

To enable this additional logging:

  1. open confluence/WEB-INF/classes/log4j.properties and uncomment the following lines. The double ## lines are comments, leave them intact.

    If you can not locate these lines in your log4j.properties file, please add them to the end of it.

  2. restart Confluence
  3. redo the steps that led to error
  4. zip up your logs directory and attach it your support ticket
  5. if you are using Oracle and got a constraint error, please ask your DBA what table and column that constraint (that is, CONFLUENCE.SYS_C0012345) refers to and add that information to your support ticket.
  6. open confluence/WEB-INF/classes/log4j.properties again and remove the 4 lines you added in step 1 (the additional logging will impact performance and should be disabled once you have completed this procedure.

Enable Hibernate Logging

Oracle Error Codes

Each DB Oracle error has a specific error code and information about them can be located on a http://<ERROR-CODE>.ora-code.com/
For example the above error code http://ora-00001.ora-code.com/