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Hi,
I had a big query which was running out of rollback so after some tuning i had to break it down in to two. from the first query i store the result in a temporary table and then use it for second part. it is still slow. i did not use permament table since that could involve rollback/redo. but still i will try to check it. i am also thinking of pl/sql table but if that always remains in memory then it could impact memory or sga. pl/sql table uses pga or OS memory but if paging swapping occurs then it would impact sga too. Will it always be faster than temp or permanent table? Can some one give feedback if you had similar experience. Thanks for help.