PM77187: Errors occur when you deploy large-scale environments.

APAR status

• Closed as program error.

Error description

• The replication mechanism has problems scaling.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of WebSphere eXtreme Scale        *
  ****************************************************************
  * PROBLEM DESCRIPTION: LockTimeout and TransactionTimeout      *
  *                      occur with other transactions that      *
  *                      were waiting on the locks held by the   *
  *                      long transaction.                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The replication mechanism used by the catalog servers had an
  algorithm that did not scale linearly with the size of the data
  being replicated. This results in exponentially longer commit
  time in the catalog server as the size of the transactions
  increase. The transaction time increases for some transactions
  as the size of the data grid increases by the number of
  containers or number of partitions.
  

Problem conclusion

• The algorithm was modified to scale linearly.
  

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

  WS EXTREME SCAL

• Fixed component ID

  5724X6702

Applicable component levels

• R850 PSY

     UP