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2801588 - High volume of duplicate key errors brings DSI down. Outbound queue is building up.- SRS

Symptom

  • The DSI thread is Down due to the Error 2601:  

ERROR #1028 DSI EXEC(146(1) MYDS.MYDB) - neric/dsi/dsiqmint.c(5172)
Message from server: Message: 2601, State 1, Severity 16 -- 'Attempt to insert duplicate key row in object 'MYTABLE' with unique index 'PK_MY_COLUMN''.
Message from server: Message: 3621, State 0, Severity 10 -- 'Command has been aborted.'.
THREAD FATAL ERROR #5049 DSI EXEC(146(1) MYDS.MYDB) - neric/dsi/dsiqmint.c(5185)
The DSI thread for database 'MYDS.MYDB' is being shutdown. DSI received data server error #2601 which is mapped to STOP_REPLICATION. See logged data server errors for more information. The data server error was caused by output command #1 mapped from input command #3 of the failed transaction. 

  • Skipping the first transaction in the outbound queue helps to bring the DSI thread up, but it then fails again due to Error 2601. It looks like there are too many transactions hitting duplicate key errors in this replicate table. 
  • After a few skipped transactions, the DSI thread seems like hanging. Rebooting SRS helps to revive this connection, but then after a few skips the DSI thread gets hung again.
  • The outbound queue has built up to 2.2 GB.

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Environment

SAP Replication Server (SRS) 16.0 SP03 PL05  

Product

SAP Replication Server 16.0

Keywords

autocorrection, dsi_command_convert, i2di ,u2none, dsi_row_count_validation, sts_cachesize, sts_full_cache, unresponsive, hung, configure , KBA , BC-SYB-REP , Sybase Replication Server (standalone) , Problem

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