Export Receives The Errors ORA-1555 ORA-22924 ORA-1578 ORA-22922

(Doc ID 787004.1)

Last updated on AUGUST 29, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.1 to 11.2.0.3 [Release 9.2 to 11.2]
Oracle Database - Enterprise Edition - Version 12.1.0.2 to 12.1.0.2 [Release 12.1]
Information in this document applies to any platform.
***Checked for relevance on 7-FEB-2011***

Symptoms

When exporting tables having LOB columns, using data pump or conventional export the following errors might occur:

expdp:

Processing object type DATABASE_EXPORT/SCHEMA/POST_SCHEMA/PROCACT_SCHEMA
ORA-31693: Table data object "SCOTT"."LOBDATA" failed to load/unload and is being skipped due to error:
ORA-29913: error in executing ODCIEXTTABLEPOPULATE callout
ORA-01555: snapshot too old: rollback segment number with name "" too small
ORA-22924: snapshot too old

exp:

. . exporting table LOBDATA
EXP-00056: ORACLE error 1555 encountered
ORA-01555: snapshot too old: rollback segment number with name "" too small
ORA-22924: snapshot too old

or:

EXP-00056: ORACLE error 22922 found
ORA-22922: nonexistent LOB value
. . Export der Tabelle LOBDATA 2 rows exported

Cause

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