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ORA-31693,ORA-02354,ORA-01555 received with EXPDP

edited May 12, 2017 5:00AM in Database Utilities (MOSC) 5 commentsAnswered

ORA-31693: Table data object "TEST"."FILES" failed to load/unload and is being skipped due to error:ORA-02354: error in exporting/importing dataORA-01555: snapshot too old: rollback segment number 10 with name "_SYSSMU10_2456787256$" too small

I receive above error when I try to create an export dump of schema in 11.2.0.4 database. The FILES table contain a BLOB column with storage options as STORAGE IN ROW, PCTVERSION  10. This table contain lot of attachment files stored in the BLOB column. Based on metalink document search, it bottoms down to UNDO_RETENTION (currently defaults to 900), size of UNDO tablespace (7G) and possible LOB data corruption. I already executed PL/SQL code to verify if there are any corrupt LOB records and found none. I am also considering FLASHBACK_TIME to see if it makes any difference.

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