When i shutdown i get below err

Question

When i shutdown i get below err
SQL> select status from v$instance;
STATUS
MOUNTED
SQL> shutdown;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
Please tell i am not sure what to do as everthing seems to be fine

Answer 1

ORA-01109: database not open
is not a error, but warning.
There are no problem, if there were only this message.
ORA-01571: redo version 9.2.0.0.0 incompatible with ORACLE version 8.1.0.0.0
This is problem.
What did you do? Did you upgrade the database?
You might fix it by making 'compatible' initial parameters sure.
Which do you use pfile and spfile?
Can you post follwing results?
sqlplus /nolog
SQL> connect sys/password as sysdba
SQL> startup nomount
SQL> show parameters pfile
(1) If you get NO VALUE, you use pfile. (I think your database is this case).
-->> shutdown, make backup (all datafiles,control files,logfiles, pfile),
edit your pfile as follows, and then try to startup
compatible=9.2.0.0.0
(2) If you get some VALUE, you use spfile.
-->> shutdown, make backup (all datafiles,control files,logfiles, spfile).
sqlplus /nolog
SQL> connect sys/password as sysdba
SQL> startup nomount
SQL> alter system set compatible=9.2.0.0.0 scope=spfile;
SQL> shutdown
SQL> startup
Or...
Cause: This software version cannot read the current redo logs, and either crash recovery is required or there are offline database files that need media recovery. If a file name is listed then it needs media recovery.
Action: Shut down and restart using the compatible software. Do any required media recovery, and open the database. Shut down and restart using the current software. If the file is going to be dropped then take it offline with the DROP option to skip this check.
Please post these kind of issues to [url http://forums.oracle.com/forums/forum.jspa?forumID=61]Database - General on next time.