Global Transaction Identifier hash collision risk with very similar Global Transaction ID (Doc ID 2016166.1)

Last updated on NOVEMBER 24, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.1 and later
Information in this document applies to any platform.

Symptoms

The alert.log has multiple occurrences of the following messages:

Global transaction identifier hash collision detected.
in_gti:  57415344.0000014C1163D2510000000230AF8B3CDE0C8BC0A6F313F4B7C369F845C0F62CB53A47D7
dx_gti: 57415344.0000014C1163D2510000000230AF8B2CDE0C8BC0A6F313F4B7C369F845C0F62CB53A47D7

And the difference in the Global Transaction ID is only 1 or 2 characters

Cause

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