JR58954: CHOOSE THE MINIMUM RESTART POSITION AND THE MINIMUM COMMIT+CURRENT INDEPENDENTLY FOR GROUP START

APAR status

• Closed as program error.

Error description

• choose the minimum restart position and the minimum
  commit+current independently for group start
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  *                                                              *
  * For IDR/CDC  IDR/CDC 11.4.x:                                 *
  * This issue may affect you if you use IDR/CDC 11.4.0.0-5058   *
  * for all LUW engines or lower.                                *
  *                                                              *
  * For IDR/CDC 11.3.x:                                          *
  * This issue may affect you if you use IDR/CDC 11.3.3.3-78 for *
  * all LUW engines or lower.                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * CHOOSE THE MINIMUM RESTART POSITION AND THE MINIMUM COMMIT + *
  * CURRENT INDEPENDENTLY FOR GROUP START                        *
  *                                                              *
  * More details:                                                *
  * When a subscription starts and the shared scrape staging     *
  * store is empty, we need to determine the bookmark to use as  *
  * the begin bookmark for the staging store.                    *
  *                                                              *
  * Method in IDR/CDC product (internal) does the following:     *
  *                                                              *
  * Determine the subscription bookmark that should be used for  *
  * starting the log parser when the change log does not exist   *
  * yet. Called when a subscription asks if it can use shared    *
  * scrape.                                                      *
  * Product will iterate through all subscriptions that are      *
  * currently running.                                           *
  * These subscriptions could be running a describe, stand alone *
  * refresh, or mirroring.                                       *
  * Product will exclude any that are not mirroring.             *
  * Product will use the earliest bookmark of all subscriptions  *
  * that are just starting mirroring.                            *
  * This is so they can all use shared scrape.                   *
  * If product just pick the first one that makes it to shared   *
  * scrape, then any subscriptions whose bookmark is earlier     *
  * will not be able to use shared scrape.                       *
  *                                                              *
  * Product determine the "earliest bookmark" based on           *
  * commit+current position.                                     *
  * Product do not consider the restart position.                *
  * Product assume the bookmark with the earliest commit+current *
  * position will also have the earliest restart position.       *
  * It is possible that one subscription has the earliest        *
  * commit+current position but another has the earliest restart *
  * position.                                                    *
  * Product should compute the earliest restart position from    *
  * all subscriptions starting, and then compute the earliest    *
  * commit+current position from all subscriptions starting, and *
  * then create a new bookmark that is the combination of the    *
  * two.                                                         *
  * In most cases, this bookmark will be the same as one of the  *
  * subscription bookmarks but may not be.                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• For IDR/CDC 11.4.x:
  Upgrading to IDR/CDC 11.4.0.0-5059 for all LUW engines or newer
  resolves the issue.
  
  For IDR/CDC 11.3.x:
  Upgrading to IDR/CDC 11.3.3.3-80 for all LUW engines or newer
  resolves the issue.
  

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 DATA REPLICA

• Fixed component ID

  5725E3000

Applicable component levels

• RB33 PSY

     UP

• RB40 PSY

     UP