Coordinated Replicat is slow with Large Barrier Transactions
Last updated on JANUARY 19, 2018
Applies to:Oracle GoldenGate - Version 184.108.40.206.0 and later
Information in this document applies to any platform.
Oracle DB : RDBMS_220.127.116.11.0_SOLARIS.SPARC64_RELEASE
OGG Label : OGGCORE_MAIN_PLATFORMS_130704.1400
Setup : 2-Node RAC SRC-DB (custdb),2-Node RAC DEST (WEBDB)
Observed severe degradation in performance for co-ordinated replicat(rep14). Usually 30 minutes workload is replicated with average lag less than 5 minutes, but
in the current run lag is more than 30 minutes and still replication is happening. The issue is observed in both Solaris and Linux.
GGSCI (slcai866) 32> lag rep14
Sending GETLAG request to REPLICAT REP14 ...
REP14071- Last record lag:2214 seconds
REP14073- Last record lag:2214 seconds
Minimum Lag: Thread 71 - REP14071: 2214 seconds
Maximum Lag: Thread 71 - REP14071: 2214 seconds
Average Lag: 2214 seconds.
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