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ORA-1555 When Using Active Data Guard in Distributed Queries (Doc ID 1433442.1)

Last updated on JANUARY 07, 2025

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.2 and later
Information in this document applies to any platform.

Symptoms


Running a distributed query from 11.2.0.2.0 active Data Guard
database and accessing a 10.2.0.4 database causes following error:

ERROR at line 5:
ORA-01555: snapshot too old: rollback segment number 10 with name "_SYSSMU10$"
too small
ORA-02063: preceding line from XXXX.YYYY.NET

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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