Morning All,

Is somebody here monitoring SQL statements which do not have Where clause ??

Couple of times on our DB ( 8.1.7 ), some SQL statements were issued by Application ( 
bad code ) as well as users without where clause causing HUGE rollback ( almost 400 
Million blocks ) and also causing LOCKS some times. When we kill these session(s) , 
its taking almost 6 to 7 hours to parallel rollback. 

Also , can you guys provide me some script to monitor the Rollback segments , like 
when the rollback usage by session reaches 200 Million blocks, script has to mail me. 
Basic SQL script should be fine for me. 

Thank you,
Madhu Reddy



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Author: Reddy, Madhusudana
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