Joe, No I don't think you dreamed up anything because I remember that same all the way back to V3. But in the case where you have no transactions open I do believe that a commit or rollback is basically the same. Dick Goulet ________________________________ From: TESTAJ3@xxxxxxxxxxxxxx [mailto:TESTAJ3@xxxxxxxxxxxxxx] Sent: Friday, February 13, 2009 8:52 AM To: Goulet, Richard Cc: ajoshi97@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx; oracle-l-bounce@xxxxxxxxxxxxx Subject: RE: ** commit or rollback - diff so it is just my imagination or does any else remember (the old days, of i think either v6 or 7 of oracle), when if you did a large transaction and decided to rollback and it was quick and a commit took a while, but then oracle did a switch since the majority of the time the commit was what happened and it was now quick and the rollback took time to complete, or did i just dream that whole thing up? joe _______________________________________ Joe Testa, Oracle Certified Professional Senior Consultant Data Engineering and Administration Nationwide Investments (Work) 614-677-1668 (Cell) 614-312-6715 Interested in helping out your marriage? Ask me about "Weekend to Remember" Dec 11-13, 2009 here in Columbus. From: "Goulet, Richard" <Richard.Goulet@xxxxxxxxxxx> To: <ajoshi97@xxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx> Date: 02/13/2009 08:47 AM Subject: RE: ** commit or rollback - diff Sent by: oracle-l-bounce@xxxxxxxxxxxxx ________________________________ From that point of view I do believe they are equal. Dick Goulet ________________________________ From: A Joshi [mailto:ajoshi977@xxxxxxxxx <mailto:ajoshi977@xxxxxxxxx> ] Sent: Thursday, February 12, 2009 4:47 PM To: oracle-l@xxxxxxxxxxxxx; Goulet, Richard Subject: RE: ** commit or rollback - diff Dick, Thanks. Yes, I see that from safety point of view. From performance point of view and resource consumption : which is faster? Or does it make no diff? I know commit is expensive operation : however : is that only if there are changes. Thanks --- On Thu, 2/12/09, Goulet, Richard <Richard.Goulet@xxxxxxxxxxx> wrote: From: Goulet, Richard <Richard.Goulet@xxxxxxxxxxx> Subject: RE: ** commit or rollback - diff To: ajoshi977@xxxxxxxxx, oracle-l@xxxxxxxxxxxxx Date: Thursday, February 12, 2009, 4:38 PM Rollback is safer just incase you did a DML transaction without knowing it like inside a procedure. Dick Goulet ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx <mailto:oracle-l-bounce@xxxxxxxxxxxxx> ] On Behalf Of A Joshi Sent: Thursday, February 12, 2009 4:32 PM To: oracle-l@xxxxxxxxxxxxx Subject: ** commit or rollback - diff Hi, If I have not done a dml transaction in a session : no update, delete or insert etc. I have only done select and some of the objects can be over a db link. So I can do a commit or rollback so that no transaction is pending in my session. My question is : is there any difference in such case between the behaviour of commit and rollback. When there is no data as such to commit or rollback. I am thinking it is better to do rollback since it has to do less. Am I wrong. Any observation. Thanks for help. Thanks