In Tom Kyte's book Expert 1-on-1 he says to ANALYZE the table BEFORE starting a big query. Read Chapter 5, starting on page 185 for a complete explanation.
Walter K wrote: > > Hi, > > A user in our data warehousing group is running into > the old ORA-01555 (snapshot too old) error every time > she runs a massive (20 million rows) select against > one table via a view. I confirmed that the view only > translates to the one table. > > The user swears that no one would be making any > updates/deletes to the table she is selecting from. I > suggested she lock the table in exclusive mode, prior > to running her massive select to guarantee no one else > could change the data in the table and cause the > triggering of the 1555 error. Locking the table was a > viable option because it's a staging table in the > warehouse itself. She locked the table in exclusive > mode last night and it locked; fired off her query, > and it failed 5 hours later with the 1555 error again. > > I'm stumped on this. I just don't see how this is > possible. Any suggestions? > > Thanks!!! > -w > > __________________________________________________ > Do You Yahoo!? > Great stuff seeking new owners in Yahoo! Auctions! > http://auctions.yahoo.com > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Walter K > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (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). -- Charlie Mengler Maintenance Warehouse [EMAIL PROTECTED] 10641 Scripps Summit Ct. 858-831-2229 San Diego, CA 92131 Our customers are part of our team. They're the test department! -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Charlie Mengler INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (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).
