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E-ORA: ORA-01555 Error When Altering a Very Large Table (Doc ID 1501149.1)

Last updated on AUGUST 10, 2021

Applies to:

PeopleSoft Enterprise PT PeopleTools - Version 8.52 and later
Managed Cloud Services Non Outage Incident
Information in this document applies to any platform.
Error: ORA 01555
Text "snapshot too old: rollback segment number %s with name \"%s\" too small"
Cause: rollback records needed by a reader for consistent read are overwritten by other writers
Action: If in Automatic Undo Management mode, increase undo_retention setting. Otherwise, use larger rollback segments


The error occurs on the following update statement: UPDATE PS_JRNL_LN SET PC_DISTRIB_STATUS = 'N'
because the PS_JRNL_LN table contains 100s of millions of rows



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