On 03/03/11 11:47 PM, tuanhoanganh wrote:
Yesterday, I had some problem with postgresql 9.0.2. Today i backup
postgres and has error
pg_dump: reading dependency data
pg_dump: SQL command failed
pg_dump: Error message from server: ERROR: invalid page header in
block 299 of relation "pg_depend_depender_index"
pg_dump: The command was: SELECT classid, objid, refclassid, refobjid,
deptype FROM pg_depend WHERE deptype != 'p' ORDER BY 1,2
pg_dump: *** aborted because of error
Is there any way to fix it.
the bad news is, this generally indicates a hardware problem caused disk
data to be corrupted. this could be a memory error corrupting cache,
or the disk channel or drive. Or, it could be a issue with the OS file
system, failing under heavy concurrent random writes. Or it could
be a rare bug in postgres, but I've not heard of any block corruptions
in a long long time.
the good news is, its an index, and you can just reindex that table.
thats a system table. as the postgres user,
reindex index pg_depend_depender_index;
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