Oracle-L: Re: ORA-1554: Out of transaction slots

From: <Rajesh.Rao_at_jpmchase.com>
Date: Tue, 08 Oct 2002 12:18:53 -0800
Message-ID: <F001.004E3991.20021008121853@fatcity.com>

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>
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        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

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INET: Rajesh.Rao_at_jpmchase.com

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