Get ORA-00368: checksum error in redo log block

Question

Hi all,
I get an error ORA-00368: checksum error in redo log block when connecting to database and here is the error:
ORA-00368: checksum error in redo log block
ORA-00353: log corruption near block 430757 change 1236507302 time 11/12/2009
09:55:35
ORA-00312: online log 4 thread 1: '/oradata02/tchad/redo4.log'
Note that we are in noarchive log mode.
Could you help on how to recover my database please or a doc if there is interesting somewhere.
Thank you
Lucienot

Answer 1

Hi I don't have redo log duplex and here are the things i've done:
1.     shutdown abort
2.     ALTER DATABASE CLEAR UNARCHIVED LOGFILE '/oradata/.../redo3.log';
3.     startup nomount;
4.     alter database mount;
5.     ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 4;
SQL> SELECT GROUP#, ARCHIVED, STATUS FROM V$LOG;
GROUP# ARC STATUS
3 NO ACTIVE
4 NO CURRENT
5 NO UNUSED
SQL> alter system switch logfile;
alter system switch logfile
ERROR at line 1:
ORA-01109: database not open
SQL> alter database open;
alter database open
ERROR at line 1:
ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
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: '/oradata00/tchad/system01.dbf'
Thanks