ORA-01555 And Other Errors while Exporting Table With LOBs, How To Detect Lob Corruption. (Doc ID 452341.1)

Last updated on DECEMBER 06, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.1 and later
Information in this document applies to any platform.
***Checked for relevance on 29-Jan-2014***

Symptoms

When attempting to export tables that contain lobs, the following errors occur:

- using DataPump export, EXPDP:

Processing object type DATABASE_EXPORT/SCHEMA/POST_SCHEMA/PROCACT_SCHEMA
ORA-31693: Table data object "HARVEST"."HARVERSIONDATA" 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


- using original export, EXP:

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

Cause

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