JR63847: NECCESSITYEXCEPTION "CHANGE LOG BLOCK WE ARE TRYING TO READ IS EMPTY!" IF TIMING CIRCUMSTANCES ARE UNFORTUNATE

APAR status

• Closed as program error.

Error description

• NeccessityException "Change log block we are trying to read is
  empty!" if timing circumstances are unfortunate.
  
  com.datamirror.ts.util.TsExceptionHandler
  processUnhandledException()
  An uncaught exception has occurred:
  com.datamirror.ts.assertion.NecessityException
  The error value is " Change log block we are trying to read is
  empty!".| at
  com.datamirror.ts.assertion.Necessity.necessity(Necessity.java:6
  1)| at
  com.datamirror.ts.scrapers.singlescrape.ChangeLogPointer.getOpsF
  romMemory(ChangeLogPointer.java:796)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * This issue might affect you if you are using IDR             *
  * 11.4.0.3-5594 or earlier as a source engine, and shared      *
  * scrape is active.                                            *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * When the source engine encountered an empty block, it would  *
  * stop.                                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to IDR 11.4.0.4-5599 or newer for all LUW engines    *
  ****************************************************************
  

Problem conclusion

• Upgrading to IDR 11.4.0.4-5599 or newer for all LUW engines
  resolves this issue. When a source engine encounters an empty
  block, it now continues on to the next non-empty block.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  IS CDC ORACLE

• Fixed component ID

  5725E30OR

Applicable component levels

• RB40 PSY

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