Assuming you don't have a backup that you could use, Toon Koppelaars wrote a good paper on an approach to recovering almost all the data from a table that has a corrupt block or two. Here's a link to the paper: http://web.inter.nl.net/users/T.Koppelaars/ora01578.rtf.
I used his technique a couple of years ago on a 10g database and posted about it here: http://kerryosborne.oracle-guy.com/2009/02/saving-rows-from-corrupt-blocks/ .
If you don't have a backup and getting most of the data back is OK (i.e. loosing only the records in any blocks that are actually corrupt), then this approach may work for you. I my case, we only lost about 120 records out of close to a billion.
Kerry Osborne Enkitec blog: kerryosborne.oracle-guy.com On Mar 22, 2010, at 4:34 PM, patrick obrien wrote:
Hello my good oracle friends, ( to start out, thanks for all of your help with my past problems. ) Oracle Oracle8i Enterprise Edition Release 184.108.40.206.0 - Production I've got the following importing, not sure the best fix?? thank you! Mead:oracle$ exp parfile=AD_OBJATCH.par Export: Release 220.127.116.11.0 - Production on Mon Mar 22 14:27:16 2010 (c) Copyright 1999 Oracle Corporation. All rights reserved.Connected to: Oracle8i Enterprise Edition Release 18.104.22.168.0 - ProductionWith the Partitioning option JServer Release 22.214.171.124.0 - ProductionExport done in WE8ISO8859P1 character set and WE8ISO8859P1 NCHAR character setAbout to export specified tables via Conventional Path ... Current user changed to AMS_AFINADM . . exporting table AD_OBJATCH EXP-00056: ORACLE error 1578 encountered ORA-01578: ORACLE data block corrupted (file # 54, block # 345609) ORA-01110: data file 54: '/u10/dbs/fsco/object02.dbf' Export terminated successfully with warnings.