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

Last updated on DECEMBER 20, 2022

Applies to:

Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.


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




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