Integrated Extract Facing LAG Due To Snapshot Query Error 1466
(Doc ID 2465449.1)
Last updated on AUGUST 23, 2021
Applies to:Oracle GoldenGate - Version 126.96.36.199.2 and later
Information in this document applies to any platform.
Integrated Extract facing huge lag.
When enabling xml GoldenGate activity logging for the extract, we can see this message:
The 1466 is Oracle RDBMS error for Snapshot Query feature:
01466, 00000, "unable to read data - table definition has changed"
// *Cause: Query parsed after tbl (or index) change, and executed
// w/old snapshot
// *Action: commit (or rollback) transaction, and re-execute
Goldengate extract using FETCHOPTIONS USESNAPSHOT, which uses RDBMS Snapshot Query underneath.
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