RMAN - ORA-01578 Oracle Data Block Corrupted

Feb 11, 2013

we are running oracle 9iR2 ( 9.2.0.1.0) on windows server 2003 R2 and facing ORA-01578: ORACLE data block corrupted (file # 17, block # 312316)

SQL> select * from payrol.slip;
select * from payrol.slip
*
ERROR at line 1:
ORA-01578: ORACLE data block corrupted (file # 17, block # 312316)
ORA-01110: data file 17: 'E:ORACLEORADATAMTMASYSMTM.ORA'
ORA-26040: Data block was loaded using the NOLOGGING option

1) SELECT name FROM v$datafile WHERE file#=17;
output
E:ORACLEORADATAMTMASYSMTM.ORA

2) SELECT block_size FROM dba_tablespaces
WHERE tablespace_name =
(SELECT tablespace_name FROM dba_data_files WHERE file_id=17);
output
8192

3) SELECT tablespace_name, segment_type, owner, segment_name
FROM dba_extents
WHERE file_id = &AFN
and &BL between block_id AND block_id + blocks - 1;

file_id=17, BL=312316
output
SYSMTM TABLE PAYROL SLIP

I am not using RMAN. How to recover payrol.slip table ?

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Ora-01578 ORACLE Data Block Corrupted For New Site

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Oracle 10gR2 on red hat.

I have an application that writes blobs via pro*c. It is running at several sites without errors for a few years now. One of the newer sites has started reporting "ora-01578 ORACLE data block corrupted".

I've tried using rman backup validate - it does not report any errors.

I've tried using rman restore and recover to correct the problem.

I've tried deleting the file with the corrupt block and using rman restore and recover to recreate it.

In any of the above cases, I do not see any errors being encountered, and when I restart the application, it works for a while and then starts reporting "ora-01578 ORACLE data block corrupted".

I've had the client do a physical check of the disk and it indicated the media was okay.

We've failed over to the standby system, so I have a wee bit of breathing room - but I'm going to be away for 4 days and will have to get back on this when I get back. I'm a little puzzled that I can fix it for a short while and then it breaks again.

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I am having 3 oracle database instances running on 3 seperate Linux Node(RHEL Node).

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Instance -3 named - OAS

Among of these 3 nodes, we are facing Block Corruption issues with sysaux tablespace.Error in Instance name DS is

Errors in file /u01/home/dba/oracle/diag/rdbms/ds4db/DS/trace/DS_j000_655388.trc (incident=300847):
ORA-01578: ORACLE data block corrupted (file # 2, block # 38428)
ORA-01110: data file 2: '/DSdb1/dssysaux.dbf'
ORA-26040: Data block was loaded using the NOLOGGING option
GATHER_STATS_JOB encountered errors. Check the trace file.
[code]....

for this I googled and found some solution as oracle doc [430230.1] related to sysaux couruption.After this again we are facing the same issue in sysaux tablespace.

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What i have to do for this error:

ORA-01578: ORACLE data block corrupted (file # 3, block # 42348)
ORA-01110: data file 3: '+DGMETA/metadb/datafile/sysaux.257.783871811'
Wed Nov 21 09:30:00 2012
Corrupt Block Found
TSN = 2, TSNAME = SYSAUX
RFN = 3, BLK = 42348, RDBA = 12625260
OBJN = 50439, OBJD = 50439, OBJECT = MGMT_STRING_METRIC_HISTORY_PK, SUB
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Database version is :- Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bi

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We are facing block corruption error and it's refer to system datafile (SYSTEM01.DBF).Below is the script through it, we can come to know about the extent.

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select owner,index_name,index_type, table_name from dba_indexes
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ORA-00701 - object necessary for warmstarting database cannot be altered.

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2. Then we successfully restored the database from old RMAN backup of previous date that caused this error.

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5. Then we truncated the data from all 3 tables and then able to export successfully.

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failover to previous backup

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RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
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channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
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Starting backup at 24-MAR-13
current log archived
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RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
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*
ERREUR à la ligne 1 :
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Tablespace created.

SQL> create table scott.test_bad_block (id int, name varchar2(20)) tablespace test;

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6* end;
begin
*
ERROR at line 1:
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ORA-06512: at line 3
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COUNT(*)
----------
40984

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SQL> select count(*) from scott.test_bad_block;
select count(*) from scott.test_bad_block *
ERROR at line 1:
ORA-01578: ORACLE data block corrupted[b] (file # 7, block # 72)[/b]
ORA-01110: data file 7: '/u01/app/oracle/oradata/test/test.dbf'

It says that the block is corrupted.Now, here is what I can do to get the data right now:

#get the object id
SQL> r
1* select OBJECT_NAME, DATA_OBJECT_ID from dba_objects where owner='SCOTT' and object_name='TEST_BAD_BLOCK'

OBJECT_NAME DATA_OBJECT_ID
-------------------- --------------
TEST_BAD_BLOCK 10327
[code]....

Here are my questions:

1. How can I know, that if there is valid data(the block is not corrupted) after this bad block?
2. How can I get the data after this bad block?

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[Code]...

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