Error ORA-00313

Question

hi
i have installed SAP ECC 6.0 with oracle as Database.When i try to start the instance ,i got a Error
mesage saying DB startup failed.so i went through sqlplus and given the following commands.
SQL> startup
ORACLE instance started.
Total System Global Area  461373440 bytes
Fixed Size                  2071928 bytes
Variable Size             239075976 bytes
Database Buffers          213909504 bytes
Redo Buffers                6316032 bytes
Database mounted.
ORA-00313: open failed for members of log group 1 of thread 1
ORA-00312: online log 1 thread 1: '/oracle/QAS/origlogA/log_g11m1.dbf'
ORA-00312: online log 1 thread 1: '/oracle/QAS/mirrlogA/log_g11m2.dbf'
i hope u guys can crack this error.
Regards
Ganesh Reddy

Answer 1

Dear Ganesh,
What the error shows that the redologfiles r multiplexed and for some reason the oracle cant read the redo log files in Group 1.
ALTER DATABASE ADD LOGFILE GROUP 6
('....ORACLE\QAS\ORILOGA\LOG_G11M6.ORA','...ORACLE\QAS\ORILOGA\LOG_G11M7.ORA') SIZE 1M;
NOW SHUTDOWN ORACLE & RESTARTIT.
EXECUTE:
ALTER DATABASE DROP LOGFILE GROUP 1;
IT MAY SHOW AN ERROR THAT
LOG 1 IS CURRENT LOG FOR THREAD 1 CANNOT DROP.
IF THIS ERROR SHOWS EXECUTE
ALTER SYSTEM SWITCH LOGFILE;
THIS MAY SHOW AN ERROR  DATABASE NOT OPEN
IF SO EXECUTE
ALTER DATABASE OPEN;
WHEN THE DATABASE IS OPEN
EXECUTE
ALTER SYSTEM SWITCH LOGFILE;
IF IT IS SWITCHED
DROP THE LOGFILE GROUP1 BY EXECUTING:
ALTER DATABASE DROP LOGFILE GROUP 1;
IF THE DATABASE ALTERED MSG COMES SHUTDOWN AND RESTART.
WE ADDED A LOGFILE GROUP COZ ATLEAST 2 LOGFILE GROUPS ARE REQUIRED THEN WE DROPPED THE GROUP1.
This has to  help and  pl dont forget to award a point.
Regards