ORA-1555 Error With Query Duration as 0 Seconds (Doc ID 761128.1)

Last updated on MAY 23, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.1 to 11.2.0.3 [Release 9.2 to 11.2]
Information in this document applies to any platform.
***Checked for relevance on 23-May-2016***

This problem can occur on any platform.

Symptoms

ORA-1555 error reported intermittently with query duration as 0 seconds.

Changes

This may be impacted by <bug:5475085> currently being worked by development which identified that not all undo statistics are being updated when they should be, such as V$UNDOSTAT.EXPBLKREUCNT.

Cause

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