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ORA-01555 error when exporting table with BLOB column

I think that I have a data problem. Exporting a table with a BLOB column, I get an ORA-01555 error even though I can export a like-sized table, 1.6 million rows, that has a long raw column containing similar data, .pdf files. How can I figure out which docid (PK) this is choking on?

I think that I have a data problem. Exporting a table with a BLOB column, I get an ORA-01555 error even though I can export a like-sized table, 1.6 million rows, that has a long raw column containing similar data, .pdf files. When I try to import the partial export, I get:
. . . importing table         "FS_DOCUMENTS"
IMP-00064: Definition of LOB was truncated by export
IMP-00018: partial import of previous table completed: 
129565 rows imported Import terminated successfully with warnings.
How can I figure out which docid (PK) this is choking on?
The ORA-1555 error is not indicating a problem with your data. Rather, it indicates a problem accessing rollback information in order to construct a read consistent image. If you are using Oracle 9i or 10g and have implemented Automated Undo Management, you will need to increase your UNDO_RETENTION initialization parameter, or increase the size of your undo tablespace if it is full. If you are using the older rollback segments, you will need to increase the size of your rollback segments.
This was last published in August 2006

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