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Home -> Community -> Mailing Lists -> Oracle-L -> Re: ORA-1554: Out of transaction slots
Anjo,
To simulate the ORA-1554, I tried the following, which I think, is along the same lines you mention :
1. Created a database with block size 2K. 2. Created one rollback segment in the tablespace RBS. 3. Started 21 session all updating different tables, and not commiting. 4. v$rollstat at this point showed me xacts = 21 and status = ONLINE 5. Started the 22 session and tried an update statement. 6. Oracle reported the "Unable to use system rollback segment for nonsystem ..." error.
The reason I am trying to simulate this error, is that the application logs
reported the error:
ORA-1595: error freeing extent (3) of rollback segment (2). #### Yes,
optsize is set.
ORA-1554: Out of transaction slots in transaction tables.
I am trying to investigate why? Metalink could not give me a definite answer, and soft closed the tar.
Thanks
Raj
Anjo Kolk
<anjo_at_oraperf To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
.com> cc:
Sent by: Subject: Re: ORA-1554: Out of transaction slots
root_at_fatcity.
com
October 08,
2002 04:54 PM
Please
respond to
ORACLE-L
Rajesh,
Your database has probably only the system rollback segment. Oracle will probably leave a slot open so in that rollback segment. Create an additional rollback segment and you will probably see the error.
Anjo.
Rajesh.Rao_at_jpmchase.com wrote:
>
> Sorry if I did not phrase my question correctly. I do know that for a
> database with block size 2K, the number of max transaction slots is 21.
> When I was running my tests, I was expecting to see an "Out of
transaction
> slots" on the 22nd session. Instead Oracle tried to use the system
rollback
> segment, and gave me an "Unable to use system rollback segment for a non
> system .... " error.
>
> My question is I want to simulate the "Out of transaction slot" error?
What
> should I do to have Oracle report this message back to me?
>
> Thanks
> Raj
>
>
> Jared.Still_at_r
> adisys.com To: ORACLE-L_at_fatcity.com
> cc: Rajesh Rao/CHASE_at_CHASE
> October 08, Subject: Re: ORA-1554: Out
of transaction slots
> 2002 02:44 PM
>
>
>
> It's dependant on block size, or at least it was the last time I checked,
> which was a few years ago.
>
> You can see the number of slots by doing a block dump the rollback
> segment.
>
> Jared
>
> Rajesh.Rao_at_jpmchase.com
> Sent by: root_at_fatcity.com
> 10/08/2002 11:34 AM
> Please respond to ORACLE-L
>
> To: Multiple recipients of list ORACLE-L
<ORACLE-L_at_fatcity.com>
> cc:
> Subject: ORA-1554: Out of transaction slots
>
> Hello Folks,
>
> I carried out a test, whereby I had just one rollback segment online with
> a
> block size of 2K, and then running updates against the database thru
> different sessions without commiting any of them? As expected, it
accepted
> the first 21 transactions, and on the 22nd transaction, threw an "Unable
> to
> use system rollback segment for a non system .... " error.
>
> When does Oracle report an "ORA-1554: Out of transaction slots" for a
> rollback segment?
>
> Thanks
> Raj
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author:
> INET: Rajesh.Rao_at_jpmchase.com
>
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Anjo Kolk INET: anjo_at_oraperf.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: INET: Rajesh.Rao_at_jpmchase.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Tue Oct 08 2002 - 17:23:57 CDT
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