v$undostat has a maxquerylen column - thats a good starting point in terms of avoiding ora-1555's if that's your primary concern
hth connor --- [EMAIL PROTECTED] wrote: > Having had frustration with rollback segments from > time to time over the > years I am happy to let Oracle handle it with their > recommended automatic > undo management and a defined undo tablespace. > However, it isn't that > simple is it? I imagine that undo retention is > critical and if you specify > too long you might have problems with performance > while too little and what > you loose read-consistency - any ideas on the best > way to configure this > little bugger? > ===== Connor McDonald http://www.oracledba.co.uk http://www.oaktable.net "GIVE a man a fish and he will eat for a day. But TEACH him how to fish, and...he will sit in a boat and drink beer all day" __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?iso-8859-1?q?Connor=20McDonald?= INET: [EMAIL PROTECTED] 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: [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).
