I have 3 oracle databases running on a Motorola Delta 8000.
All 3 are very plain in that they use mostly default settings
and have only one (1) tablespace created at installation time.
All 3 are of size 10487808 with 2 log files each which are of
size 512512. All 3 have been running quite happily for 2+ years.
Upon examining the daily export results, I noticed the following
error:
EXP-00014: error on row 135 of table USERS
System error message: No such file or directory
EXP-00008: ORACLE error 1578 encountered
ORA-01578: ORACLE data block corrupted (file # 1, block # 2152)
Any attempt to query the table USERS fails with the error ORA-01578.
Oracle error 1578 says:
ORA-1578: ORACLE data block corrupted (file #NUM, block #NUM)
Cause: The given data block was corrupted, probably as a result
of program errors.
Action: Try to restore the segment containing the given data block.
This may involve dropping the segment and recreating it. If
there is a trace file, report the errors recorded in it to
your Customer Support Representative.
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Well, we don't currently have support from oracle, and before I
go goofing around with segments (which I know very little about),
I had the machine rebooted (gracefull shutdown of oracle) with
a file system check performed. Indeed, the fsck found some errors
that it said were resolved and all 3 database instances were started
properly.
Ok, I thought, I'll just import the most recent exports that are error
free. According to my export log, all were indeed error free. Import had
the following to say:
. . importing table "AAAAAAA" 22 rows imported
. . importing table "BBBBBBB" 97 rows imported
. . importing table "CCCCCCC" 11 rows imported
. . importing table "DDDDDDD"
IMP-00003: ORACLE error 1547 encountered
ORA-01547: failed to allocate extent of size 140 in tablespace 'SYSTEM'
IMP-00028: partial import of previous table rollbacked: 1281 rows rollbacked
. . importing table "EEEEEEE" 1 rows imported
. . importing table "FFFFFFF" 1330 rows imported
. . importing table "GGGGGGG"
IMP-00003: ORACLE error 1547 encountered
ORA-01547: failed to allocate extent of size 140 in tablespace 'SYSTEM'
IMP-00028: partial import of previous table rollbacked: 3690 rows rollbacked
Import terminated successfully with warnings.
Oracle error 1547 says:
ORA-1547: Failed to allocate extent of size *NUM* in tablespace *NAME*
Cause: The tablespace does not have enough free space to allocate
the requested extent of *NUM* blocks.
Action: Use the ALTER TABLESPACE ADD DATAFILE statement to add one
or more files to the tablespace indicated, or create the
object in another tablespace if this happens during a
CREATE statement.
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These errors occur randomly in 2 of the 3 databases when attempting
to import data. The errors are not consistent with the tables showing
errors in the export log. The 3rd database imports without errors
and everything seems to be ok.
