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SQL> select count(*) from WWork;


select count(*) from WWork where Work_WorkID = 100;
select count(*) from WWork where Work_WorkID = 100
ERROR at line 1:
ORA-00600: internal error code, arguments: [25012], [15], [8], [], [], [], [],

Tablespace id 15 is the same where the index is created.

analyze table livelink.WWORK validate structure cascade;

analyze table livelink.WWORK validate structure cascade
ERROR at line 1:
ORA-00600: internal error code, arguments: [25012], [15], [8], [], [], [], [],

analyze index livelink.WWORK_PRIMARY validate structure;
analyze index livelink.WWORK_PRIMARY validate structure
ERROR at line 1:
ORA-08100: index is not valid – see trace file for diagnostics

I’m wondering if the issue could be resolved recreating the index.

alter index WWORK_PRIMARY rebuild online noparallel;

On the alert log file, ORA-00600 began at:
Sun Jun 5 23:29:10 2011
Errors in file /u001/app/oracle/admin/motpcom/udump/motpcom_ora_26554.trc:
ORA-00600: internal error code, arguments: [ktbair1], [1], [6], [], [], [], [], []
Mon Jun 6 00:35:51 2011
Thread 1 advanced to log sequence 303722
Current log# 19 seq# 303722 mem# 0: /u002/oradata/motpcom/redo19.log
Mon Jun 6 00:35:51 2011
And then below error often raised in alert log:
Mon Jun 6 02:45:00 2011
Errors in file /u001/app/oracle/admin/motpcom/udump/motpcom_ora_28348.trc:
ORA-00600: internal error code, arguments: [25012], [15], [8], [], [], [], [], []
Mon Jun 6 02:50:01 2011
I also found other errors:
Mon Jun 6 05:00:01 2011
ORA-01555 caused by SQL statement below (Query Duration=18448 sec, SCN: 0x09f0.52bb91c8):
Mon Jun 6 05:00:01 2011
SELECT COUNT(d.dataid)
FROM allemployees a, networks_dataids d, kuaf k, dversdata v
WHERE AND AND a.user_id is null
Mon Jun 6 05:00:13 2011
Errors in file /u001/app/oracle/admin/motpcom/udump/motpcom_ora_28348.trc:
ORA-00600: internal error code, arguments: [25012], [15], [8], [], [], [], [], []
Mon Jun 6 05:05:13 2011
Tue Jun 7 02:02:14 2011
Errors in file /u001/app/oracle/admin/motpcom/udump/motpcom_ora_25842.trc:
ORA-07445: exception encountered: core dump [00000001011B8AD8] [SIGSEGV] [Address not mapped to object] [0x000000A88] [] []
Tue Jun 7 02:03:11 2011
Tue Jun 7 02:41:35 2011
Errors in file /u001/app/oracle/admin/motpcom/udump/motpcom_ora_27325.trc:
ORA-00600: internal error code, arguments: [2662], [2544], [1396224900], [28954], [3445424704], [786437], [], []
Tue Jun 7 02:41:35 2011
Errors in file /u001/app/oracle/admin/motpcom/udump/motpcom_ora_27325.trc:
ORA-00603: ORACLE server session terminated by fatal error
ORA-00600: internal error code, arguments: [2662], [2544], [1396224900], [28954], [3445424704], [786437], [], []
Tue Jun 7 02:41:59 2011

SQL> select count(*) FROM WWork where Work_WorkID=100;
select count(*) FROM WWork where Work_WorkID=100
ERROR at line 1:
ORA-00600: internal error code, arguments: [25012], [15], [8], [], [], [], [],
SQL> alter index WWORK_PRIMARY rebuild online noparallel;

Index altered.

SQL> select count(*) FROM WWork where Work_WorkID=100;


Index corruptions do not always mean that there is a Bug.
Indexes corrupt when the transaction ID that associates it with its data does not match.
In majority of the cases, this happens when a table has a large amount of DDL or DML processing as in a OLAP
processing. The index buffer cache is over written with an incorrect transaction id and an error results.
The error could be a ORA-00600 [25027] error, an ORA-8102/8103, or another ORA-00600 error.
Possibly, adding another index may resolve the issue of relying on just one index.

In addition, the index space must be reviewed to determine whether there is enough space.
As in the first example above, if there isn’t space, then the index can be overwritten and an error can appear.
I suggest reading My Oracle Knowledge Note 33343.1 “How to Find Out How Much Space an Index is Using” which provides select
statements to show the actual usage of blocks within an index. This gives an idea of how ‘full’ an index is and
allows the DBA to adjust next extent sizes etc.

In addition, you can start the Index Tuning Wizard from Enterprise Manager in order to get advice on the indexes within the database.

We would like to emphasize that the best method to resolve a corrupt index is to drop and recreate it and not use a rebuild.
If this index corrupts again, then we suggest that it be dropped and recreated.
ORA-600 [25012] “Relative to Absolute File Number Conversion Error”
Note: For additional ORA-600 related information please read Note:146580.1

This article discusses the internal error “ORA-600 [25012]”, what
it means and possible actions. The information here is only applicable
to the versions listed and is provided only for guidance.

ORA-600 [25012] [a] [b] [c]

versions 8.0 and above


We are trying to generate the absolute file number given a tablespace
number and relative file number and cannot find a matching file number
or the file number is zero.

Arg [a] Tablespace Number
Arg [b] Relative file number
Arg [c] Absolute file number (This arg is present is more recent releases)




The possibility of physical corruption exists.

Obtain the trace files and alert.log for this error and log a Service Request
with Oracle Support Services for diagnosis.

If the Arg [b] Relative file number returns 0 (zero), look for fake indexes
that can cause this error.

The following query list fake indexes :

select a.*,b.flags from dba_objects a, sys.ind$ b
where a.object_id = b.obj#
and bitand(b.flags,4096)=4096;

Known Issues:
Known Bugs
You can restrict the list below to issues likely to affect one of the following versions by clicking the relevant button:
NB Bug Fixed Description
5653641 Corrupt dictionary from DROP TABLESPACE containing _offline_rollback_segments
* 8198906, OERI [kddummy_blkchk] / OERI [5467] for an aborted transaction of allocating extents
4925342,, OERI [25027] / OERI [25012] on IOT analyze estimate statistics
3258674,, QMN process may dump or raise an internal error during DML
4186885 Partition numbers for IOT index/overflow segments are not synchronized
3751874,, OERI[25012] can occur when _old_connect_by_enabled set to true
3430832,, OERI[25012] in DML after ONLINE create index against PARTITIONED table
3915343,, OERI [25012] on COMMIT with refresh ON-COMMIT Materialized view over cluster
4305391,, OERI[25012] with kditalp can occur during a temporary LOB operation
P* 6047085 Linux x64-64: SGA corruption / crash following any ORA-7445
2526334, OERI:25012 from AND EQUAL with B-Tree and DOMAIN index
2531519, OERI:[25012] from parallel direct load of bitmap managed segments
3150268, OERI[kcbgcur_1] / OERI:25012 deleting rows from PARENT table with LIST subpartitions
3070856, OERI:12700 / 25012 / ktrexc_1 on transported tablespace with SMU
3771508 OERI[kcbgtcr_1] / OERI[25012] selecting from V$AQ in a shared server
3900237 OERI[25012] changing length of indexed column for a global temporary table
1834530,, OERI:25012 / wrong results after EXCHANGE
PARTITION with indexes with different FREELIST /FREELIST GROUPS
1698789 Wrong results, ORA-1410, ORA-8103, OERI:25012 on SELECT of UNSCOPED REF with ROWID
2189615,, OERI:25012 / OERI:504 [cache buffers chains] selecting from certain V$ tables
1784708,, OERI:KCBGTCR_1/OERI:25012 accessing LONG / LONG RAW in a HASH CLUSTER
1968815, OERI:25012 possible from SMON following DROP TABLESPACE command
2287815, OERI:KTSPISCHNT / OERI:25012 after exchange PARTITION with bitmap managed segments
2184731, OERI:25012 possible from index prefetch
1837529,, OERI:KFTR2BZ_1/OERI:25012 from CREATE sub-partitioned local INDEX ONLINE
2214167, OERI:25012 / wrong results possible after TRUNCATE of bitmap managed index
2212389, OERI:25012 / Cursor frame memory corruption when cursor with BINDS aged out / reloaded
1788648,, OERI:25012 [2147483647] possible selecting from certain V$ views
1527982, OERI:25012 / Bitmap indextable mismatch after UPDATE of PARTITION KEY moves rows
1949273, OERI:25012 / ORA-1555 / ORA-22922 accessing LOB data after ALTER TABLE MOVE lob
1264970, OERI:25012 / OERI:6050 possible coalescing index with freelists
1396571,,, OERI:25012 possible importing with TRANSPORT_TABLESPACE=Y
1678963, OERI:25012 / OERI:4142 possible on TRUNCATE of a table with a CLOB column
1297674,, OERI:25012 Analyzing partitioned table with ESTIMATE
1138239, OERI-25012 possible on direct read from plugged in (transportable) tablespace
1228658, Create INDEX on SNAPSHOT/MV can produce corrupt index (OERI:13004 / OERI:25012 / ORA-1499)
1108002 OERI:25012 when DBMS_STATS tries to gather stats for a GLOBAL TEMPORARY table
986928 DBMS_SPACE.UNUSED_SPACE reports OERI:25012 for TEMPORARY tables
1312233, OERI:25012 / OERI:KCBGCUR_1 possible on PQ STAR query with PARTITIONED fact table
718499, OERI:25012 possible on OPS parallel create index
677243 OERI:kdddgbX on DELETE / UPDATE / SELECT for UPDATE with an invalid ROWID
679817 OERI:25012 from view containing 2+ LOB columns
595698, DELETE on table with many child constraints may dump.

‘*’ against a bug indicates that an alert exists for that issue.
‘+’ indicates a particularly notable bug.
‘P’ indicates a port specific bug.
“OERI:nnnnn” is used as shorthand for ORA-600 [nnnnn].


ORA-600 [25012] errors with same first argument and different
second arguments (second arguments changes during every SELECT Run)


ORA-600 [25012], [5], [1023], [], [], [], []
The first argument corresponds to a tablespace and second argument
corresponds to a file number.

The tablespace points to an index tablespace


Bug:2184731 is fixed in and 9.2

The workaround is to set _db_file_noncontig_mblock_read_count=1.

Note:100073.1 ORA-600 [25012] “Relative to Absolute File Number
Conversion Error”





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