Oracle initialization in progress due to logfile corruption - startup error

Question

Hi All!
I m using Oracle Release 9.2.0.1.0. Due to power outage, it seems that one of its Redo files is corrupt and it is not getting started. My database is running in no archive mode and I donot have any backup for my data.
I have performed the following action but in vain. Please help me to get it started.
Thanks in advance.
Muhammad Bilal
SQL*Plus: Release 9.2.0.1.0 - Production on Mon Jan 4 19:22:16 2010
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.1.0 - Production
SQL> show user
USER is "SYS"
SQL> shutdown immediate;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
Total System Global Area 135338868 bytes
Fixed Size 453492 bytes
Variable Size 109051904 bytes
Database Buffers 25165824 bytes
Redo Buffers 667648 bytes
Database mounted.
ORA-00368: checksum error in redo log block
ORA-00353: log corruption near block 88880 change 182882946 time 01/04/2010
08:33:19
ORA-00312: online log 1 thread 1: 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
SQL> select group#,sequence#,archived,status from v$log;
GROUP# SEQUENCE# ARC STATUS
1 911 NO CURRENT
2 909 NO INACTIVE
3 910 NO INACTIVE
SQL> alter database clear logfile group 1;
alter database clear logfile group 1
ERROR at line 1:
ORA-01624: log 1 needed for crash recovery of thread 1
ORA-00312: online log 1 thread 1: 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
SQL> alter database clear unarchived logfile group 1;
alter database clear unarchived logfile group 1
ERROR at line 1:
ORA-01624: log 1 needed for crash recovery of thread 1
ORA-00312: online log 1 thread 1: 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
SQL> ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 1;
ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 1
ERROR at line 1:
ORA-01624: log 1 needed for crash recovery of thread 1
ORA-00312: online log 1 thread 1: 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
SQL> ALTER DATABASE CLEAR UNARCHIVED LOGFILE 'D:\ORACLE\ORADATA\DB\REDO01.LOG';
ALTER DATABASE CLEAR UNARCHIVED LOGFILE 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
ERROR at line 1:
ORA-01624: log 1 needed for crash recovery of thread 1
ORA-00312: online log 1 thread 1: 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
SQL> alter system switch logfile;
alter system switch logfile
ERROR at line 1:
ORA-01109: database not open
SQL> ALTER DATABASE OPEN RESETLOGS;
ALTER DATABASE OPEN RESETLOGS
ERROR at line 1:
ORA-01139: RESETLOGS option only valid after an incomplete database recovery
SQL> ALTER DATABASE CLEAR UNARCHIVED LOGFILE 'D:\ORACLE\ORADATA\DB\REDO01.LOG';
ALTER DATABASE CLEAR UNARCHIVED LOGFILE 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
ERROR at line 1:
ORA-01624: log 1 needed for crash recovery of thread 1
ORA-00312: online log 1 thread 1: 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
SQL> alter database clear logfile 'D:\ORACLE\ORADATA\DB\REDO01.LOG';
alter database clear logfile 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
ERROR at line 1:
ORA-01624: log 1 needed for crash recovery of thread 1
ORA-00312: online log 1 thread 1: 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
SQL> select member,status from v$logfile;
MEMBER STATUS
D:\ORACLE\ORADATA\DB\REDO03.LOG STALE
D:\ORACLE\ORADATA\DB\REDO02.LOG
D:\ORACLE\ORADATA\DB\REDO01.LOG
SQL> alter database clear logfile 'D:\ORACLE\ORADATA\DB\REDO03.LOG';
Database altered.
SQL> alter database clear logfile 'D:\ORACLE\ORADATA\DB\REDO01.LOG';
alter database clear logfile 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
ERROR at line 1:
ORA-01624: log 1 needed for crash recovery of thread 1
ORA-00312: online log 1 thread 1: 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
SQL> alter database clear logfile 'D:\ORACLE\ORADATA\DB\REDO02.LOG';
Database altered.
SQL> recover database until cancel;
ORA-00279: change 182763162 generated at 01/03/2010 20:00:21 needed for thread 1
ORA-00289: suggestion : D:\ORACLE\ORA92\RDBMS\ARC00911.001
ORA-00280: change 182763162 for thread 1 is in sequence #911
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
CANCEL
ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: 'D:\ORACLE\ORADATA\DB\SYSTEM01.DBF'
ORA-01112: media recovery not started
SQL> alter database open resetlogs;
alter database open resetlogs
ERROR at line 1:
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: 'D:\ORACLE\ORADATA\DB\SYSTEM01.DBF'
SQL> recover database;
ORA-00283: recovery session canceled due to errors
ORA-00368: checksum error in redo log block
ORA-00353: log corruption near block 88880 change 182882946 time 01/04/2010 08:33:19
ORA-00312: online log 1 thread 1: 'D:\ORACLE\ORADATA\DB\REDO01.LOG'
SQL> recover database until cancel;
ORA-00279: change 182882944 generated at 01/04/2010 08:33:10 needed for thread 1
ORA-00289: suggestion : D:\ORACLE\ORA92\RDBMS\ARC00911.001
ORA-00280: change 182882944 for thread 1 is in sequence #911
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
AUTO
ORA-00308: cannot open archived log 'D:\ORACLE\ORA92\RDBMS\ARC00911.001'
ORA-27041: unable to open file
OSD-04002: unable to open file
O/S-Error: (OS 2) The system cannot find the file specified.
ORA-00308: cannot open archived log 'D:\ORACLE\ORA92\RDBMS\ARC00911.001'
ORA-27041: unable to open file
OSD-04002: unable to open file
O/S-Error: (OS 2) The system cannot find the file specified.
ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: 'D:\ORACLE\ORADATA\DB\SYSTEM01.DBF'
SQL> select group#,sequence#,archived,status from v$log;
GROUP# SEQUENCE# ARC STATUS
1 911 NO CURRENT
2 0 NO UNUSED
3 0 NO UNUSED
SQL> alter system switch logfile;
alter system switch logfile
ERROR at line 1:
ORA-01109: database not open
SQL> ALTER SYSTEM CHECKPOINT GLOBAL;
ALTER SYSTEM CHECKPOINT GLOBAL
ERROR at line 1:
ORA-01109: database not open
SQL> RECOVER DATABASE USING BACKUP CONTROLFILE UNTIL CANCEL;
ORA-00279: change 182763162 generated at 01/03/2010 20:00:21 needed for thread 1
ORA-00289: suggestion : D:\ORACLE\ORA92\RDBMS\ARC00911.001
ORA-00280: change 182763162 for thread 1 is in sequence #911
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
CANCEL
ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: 'D:\ORACLE\ORADATA\DB\SYSTEM01.DBF'
ORA-01112: media recovery not started
SQL> ALTER DATABASE OPEN RESETLOGS;
ALTER DATABASE OPEN RESETLOGS
ERROR at line 1:
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: 'D:\ORACLE\ORADATA\DB\SYSTEM01.DBF'
---------------------------------------------------------------------------------------------------------------------------------

Answer 1

Hi Bilal,
1)take a trace of controlfile..the file will be in udump destination
SQL>alter database backup controlfile to trace;
*2)take the whole database cold backup...IMMEDIATLY*
3) bring another pc install the same version oracle software on it
4)copy datafiles,parameterfile.listener.ora,tnsnames.ora from the backup
5)Edit the parameter file and do the necessary changes
-control files new location
-database new name
-backgrounddump destination new location
-userdump destination new location
-coredump destination new location
And save the parameterfile as init<SID>.ora and copy it to ORACLE_HOME\database directory.
5)edit the trace file u got in step one and remove everything above
STARTUP NOMOUNT
and below
CHARACTER SET XXXXXXX
Changes should be done to paths of the datafiles and logfiles(as per physical structure of new database) change reuse to set ,new database name and noresetlogs to resetlogs in that tracefile as we are not using the logs from the source database.
EG:CREATE CONTROLFILE SET DATABASE *"DG9A"* RESETLOGS
and save that file as create_ct.sql
5)Create a oracle service using ora dim utility from command prompt.
c:\ oradim -new -sid SIDNAME -intpwd fbifbi -startmode auto -pfile d:\oracle\ora81\database\initSID.ora--->what ever the name u gave in parameter file and according to your environmetn
6)do the changes in the listener.ora and tnsnames.ora as per the new machine
5)set oracle sid and log into sql
c:\set oracle_sid=sidname
c:\sqlplus “/as sysdba”
SQL>@create_ct.sql
then open database with
SQL>alter database open resetlogs;
check google if ur confused in creating control file and oracle service check for cold database cloning
Hope you will recover
Regards
Edited by: hungry_dba on Jan 5, 2010 9:34 AM