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HOWTO : Resolve TimesTen Errors TT0907 & TT16187 With Replication Agent Core Dump (Doc ID 782680.1)

Last updated on FEBRUARY 14, 2022

Applies to:

Oracle TimesTen In-Memory Database - Version to [Release 7.0]
Information in this document applies to any platform.
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-- Problem Statement:
Data divergence between two replicated data stores, meant that when the replication agent tried to apply replicated transactions against the subscriber, it encountered foreign key violations.

This caused them to encounter <bug:6415652> where the replication agent can core dump when handling a FK violation.

The agent would core dump, then on restart, it would core dump again.  (as it tried to handle the same transaction). This cycle continued until the subscriber datastore was re-created (duplicated) from the primary.

These two issues a) data divergence and b) replication agent core dumping can be seen in the message log as follows:

a) Divergence:

04:42:47.10 Err : REP: 27049: XXX:receiver.c(9371): TT16084: Table: TT.TAB1. Failed to insert row for 'insert'
04:42:47.10 Err : REP: 27049: XXX:receiver.c(9371): TT907: TT0907: Unique constraint(T_CONST_1) violated at Rowid <0x00000000024ae478> -- file "ttree.c", lineno 4134, procedure "sbTtInsert"
04:42:47.10 Err : REP: 27049: XXX:receiver.c(5016): TT16187: Transaction 1215848204/556399; Error: transient 0, permanent 1

b) Replication agent exits:

05:05:36.20 Info: : 383: child 17793 gone, terminated with signal 11, core dumped
05:05:36.63 Info: : 383: New process (#367) has connected
05:05:36.63 Info: : 383: Repagent id 367 started for /opt/jnetx/TT/XXX
05:05:36.63 Info: : 383: Repagent restarted.

 Stack traces taken from the core dumps written by the replication thread have appeared as follows:




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