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3146649 - How to collect information when there is frequent mode switch with HADR 'Always On' - SRS

Symptom

Frequent messages in ASE log:

  • Error: 9416, Severity: 17, State: 4
  • Rep Agent on database '<SID>' switched from mode 'sync' to mode 'async' because timer on commit expired.
  • Rep Agent on database '<SID>' switched from mode 'async' to mode 'sync' because scanner reached end of log. 
  • Current transaction ID (16201002,31) in database '<SID>' (dbid = <dbid>): commit wait  expired.

    and
     
  • RepAgent(<dbid>): Autoscaling: Warning: The 'buffer pool' cannot grow any further and the scanner will sleep on packages becoming available.


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Environment

  • SAP Replication Server (SRS) 16.0 SP03 PL11
  • SAP Adaptive Server Enterprise (ASE) 16.0 SP03 PL11 with Always-on Option (HADR)
  • SAP Adaptive Server Enterprise (ASE) 16.0 SP03 PL11 For Business Suite with High Availability Disaster Recovery (HADR)

Product

SAP Adaptive Server Enterprise all versions ; SAP Replication Server all versions

Keywords

autoscaling, Rep Agent, switched from mode, CHADR, BHADR , KBA , BC-SYB-REP , Sybase Replication Server (standalone) , How To

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