ORA01102-CANNOT OPEN DATABASE IN EXCLUSIVE MODE

I HAVE STANDLONE PC HAVING ORACLE DATABASE -8I INSTALLED ON WINDOWS NT.
I CREATE ANOTHER DATABASE ON THE SAME PC SAY-"TEST" USING DIFFERENT SERVICE AND SID.DATABASE GETS CREATED .I CAN RUN CATLOG AND CATPROC SCRIPTS ALSO AND CREATE TABLESPACES AND USERS.

BUT WHEN I SHUTDOWN AND TRY TO CONNECT AGAIN USING PFILE,IT GIVES ERROR-
ORA-01102 UNABLE TO MOUNT DATABASE IN EXCLUSIVE MODE.
ANY SUGGESTION.?


08-04-2002 01:08 PM IP: Logged

stecal
Advisor


I don't find sgadef.def & ik.def files on my system.
It did not work as other database was shutdown properly.
Plaese advise.
Thank
BONNY

=====================

The "lk" and "sgadef.dbf" files are used for locking shared memory.
It seems that even though no memory is allocated, Oracle thinks memory is
still locked. By removing the "sgadef" and "lk" files you remove any knowledge
oracle has of shared memory that is in use. Now the database can start.

When you created the database you had remote_login_passwordfile = none. Now, change remote_login_passwordfile = exclusive and startup again.

If the solution provided by Julian does not work then check if your service name is correct. It is case sensitive. e.g. 'ORACLE' is different than 'oracle'. So while setting Oracle_sid mention in appropriate case.
All The Best
Sandy

bonny
Junior Member

Registered: Aug 2002
Posts: 2
I HAVE STANDLONE PC HAVING ORACLE DATABASE -8I INSTALLED ON WINDOWS NT.
I CREATE ANOTHER DATABASE ON THE SAME PC SAY-"TEST" USING DIFFERENT SERVICE AND SID.DATABASE GETS CREATED .I CAN RUN CATLOG AND CATPROC SCRIPTS ALSO AND CREATE TABLESPACES AND USERS.

BUT WHEN I SHUTDOWN AND TRY TO CONNECT AGAIN USING PFILE,IT GIVES ERROR-
ORA-01102 UNABLE TO MOUNT DATABASE IN EXCLUSIVE MODE.
ANY SUGGESTION.?


08-04-2002 01:08 PM IP: Logged

stecal
Advisor


I don't find sgadef.def & ik.def files on my system.
It did not work as other database was shutdown properly.
Plaese advise.
Thank
BONNY

=====================

The "lk" and "sgadef.dbf" files are used for locking shared memory.
It seems that even though no memory is allocated, Oracle thinks memory is
still locked. By removing the "sgadef" and "lk" files you remove any knowledge
oracle has of shared memory that is in use. Now the database can start.





08-05-2002 03:01 PM IP: Logged

julian
Senior Advisor

Registered: Jun 2001
Posts: 2942
When you created the database you had remote_login_passwordfile = none. Now, change remote_login_passwordfile = exclusive and startup again.

__________________
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08-06-2002 02:54 AM IP: Logged

sandycrab
Junior Member

Registered: Jul 2002
Posts: 27
If the solution provided by Julian does not work then check if your service name is correct. It is case sensitive. e.g. 'ORACLE' is different than 'oracle'. So while setting Oracle_sid mention in appropriate case.
All The Best
Sandy
__________________



06 aug 2002
hi Julian & Sandy

The "test" database was created on stand alone PC Which already had oracle installed on that machine.
I used the init.ora file of oracle changing the parameters.But remote_logon_password = was kept shared.
I have checked the service / sid lower /upper case.
But it still has the same problem.?
I am a certified oracle trainer.on some other computers i had the same problem.what i did is given hereunder-
i started oracle database on command propmt.without shutting down oracle ,i forced to start test database using the following command-
startup force pfile= 'c:\......\inittes.ora';
In some cases it started the test database,but some caes the same did not work.
please suggest.
thanks

Bonny,
Do you have the dbastudio?

Are you using a variant on 'Startup Parallel' in your command file. It is not directly a factor, except that I have seen that message in the past when starting the second server of a Parallel Server environment but forgetting to tell the server it was coming up in parallel so it could not get it's exclusive locks on some files (the other server already had locks.)

There is another possibility in that I have seen NT, particularly an underpowered box for its current workload, not clear the NT level lock tables on files very quickly. When that is happening, you can either wait 'a while' or bounce the box to clear the OS level locks. (Oracle may be down, but NT hasn't freed the locks yet.)

Quote:

---

Originally posted by jrpm
Are you using a variant on 'Startup Parallel' in your command file. It is not directly a factor, except that I have seen that message in the past when starting the second server of a Parallel Server environment but forgetting to tell the server it was coming up in parallel so it could not get it's exclusive locks on some files (the other server already had locks.)

There is another possibility in that I have seen NT, particularly an underpowered box for its current workload, not clear the NT level lock tables on files very quickly. When that is happening, you can either wait 'a while' or bounce the box to clear the OS level locks. (Oracle may be down, but NT hasn't freed the locks yet.)

---

-------------------------------------------------------------
no I am not using parallel server.
bonny

how many instances you have running?

how many ORACLE_HOME do you have?

how many services do you have?

Why i asked if you have the dbastudio was to login and shutdown and restart the db from there, you'll be prompted to browse to the ini file location.
Don't select it, see what location it's saying.
Then open that init file to read it's contents.. sep instance_name etc, you might notice something funny.
If you don't then start the db .

Try it and post back that attempt.

Tarry

I have two instances - orcl & test.I don't have dbstudio.
Both instances have seperate service created for them by the name orcl & test respectively.
Once again It is stanalone machine having oracle software and we are trying to create second database on the same machine.NO parallel server enabled.
plaese suggest.
Thanks
Bonny