Your error message indicates file #1 associated with the system tablespace and the trace file indicates the file #6. I would do the following
1. Check the OS error message for any hardware errors.
2. Find what objects are corrupted. To get this information use dba_extents and the given file and block#.Here is the script for the same:
accept h_file_id prompt ' Enter file_id ==>'
accept h_block_id prompt ' Enter block_id==>'
set verify off
column owner format A10
column segment_name format A20
column segment_type format A10
column hdrfile format 9999
column curfile format 9999
column curblk format 99999999
column hdrblock format 99999999
select owner, segment_name, segment_type, file_id,block_id from dba_extents
where file_id = &&h_file_id and
block_id <= &&h_block_id and
block_id + blocks > &&h_block_id;
set verify on
3. Since the errors are in two different files, check whether these files are in the same disk or controller..
4. Decide the course of action depending upon the above outcome.. It is possible for the disk /controller to give back the bad data. If it is an hardware problem, correct the hardware problem and then try again.
Thanks
Riyaj "Re-yas" Shamsudeen
Certified Oracle DBA
i2 technologies www.i2.com
Kevin Bass <kevinb_at_ameripeds.com>
Sent by: root_at_fatcity.com
12/03/01 11:50 AM
Please respond to ORACLE-L
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
cc:
Subject: Corrupted data blocks in tablespace SYSTEM
I have just started a project and have encountered a database problem. The previous DBA did not create any backup scripts or backup and recovery plans. Is there a way to get around this problem without re-creating the database?
When executing my script to get corrupted data block information , I get the following:
ORA-01578: ORACLE data block corrupted (file # 1, block # 2660)
ORA-01110: data file 1: '/u02/oradata/TIE/system01.dbf'
Trace file information.
Dump file /u01/app/oracle/admin/TIE/udump/tie_ora_11859.trc
Oracle8 Release 8.0.5.0.0 - Production
PL/SQL Release 8.0.5.0.0 - Production
ORACLE_HOME = /u01/app/oracle/product/8.0.5
System name: SunOS
Node name: edi-01
Release: 5.7
Version: Generic_106541-17
Machine: sun4u
Instance name: TIE
Redo thread mounted by this instance: 1
Oracle process number: 12
Unix process pid: 11859, image: oracleTIE
*** SESSION ID:(13.50289) 2001.11.30.15.00.00.000
***
Corrupt block relative dba: 0x0180af98 file=6. blocknum=44952.
Bad header found during buffer read
Data in bad block - type:0. format:0. rdba:0x00090255
last change scn:0x0000.3c07e0da seq:0x0 flg:0xb1
consistancy value in tail 0xffffffff
check value in block header: 0x10, check value not calculated
spare1:0x0, spare2:0x0, spare2:0xd40
Reread of rdba=180af98 file=6. blocknum=44952. found same corupted data
***
Corrupt block relative dba: 0x0180af98 file=6. blocknum=44952.
Bad header found during buffer read
Data in bad block - type:0. format:0. rdba:0x00090255
last change scn:0x0000.3c07e0da seq:0x0 flg:0xb1
consistancy value in tail 0xffffffff
check value in block header: 0x10, check value not calculated
spare1:0x0, spare2:0x0, spare2:0xd40
Reread of rdba=180af98 file=6. blocknum=44952. found same corupted data
***
Corrupt block relative dba: 0x0180af98 file=6. blocknum=44952.
Bad header found during buffer read
Data in bad block - type:0. format:0. rdba:0x00090255
last change scn:0x0000.3c07e0da seq:0x0 flg:0xb1
consistancy value in tail 0xffffffff
check value in block header: 0x10, check value not calculated
spare1:0x0, spare2:0x0, spare2:0xd40
Reread of rdba=180af98 file=6. blocknum=44952. found same corupted data
***
Corrupt block relative dba: 0x0180af98 file=6. blocknum=44952.
Bad header found during buffer read
Data in bad block - type:0. format:0. rdba:0x00090255
last change scn:0x0000.3c07e0da seq:0x0 flg:0xb1
consistancy value in tail 0xffffffff
check value in block header: 0x10, check value not calculated
spare1:0x0, spare2:0x0, spare2:0xd40
Reread of rdba=180af98 file=6. blocknum=44952. found same corupted data
***
Corrupt block relative dba: 0x0180af98 file=6. blocknum=44952.
Bad header found during buffer read
Data in bad block - type:0. format:0. rdba:0x00090255
last change scn:0x0000.3c07e0da seq:0x0 flg:0xb1
consistancy value in tail 0xffffffff
check value in block header: 0x10, check value not calculated
spare1:0x0, spare2:0x0, spare2:0xd40
Reread of rdba=180af98 file=6. blocknum=44952. found same corupted data
Kevin
Received on Mon Dec 03 2001 - 13:18:29 CST
