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Hello
I have had 2 problems with block corruption caused due to a faulty physical volume . I now want to set the above parameter to TRUE in my init.ora file . I would like to ask about the performance of the DB when DB_BLOCK_CHECKING is TRUE .
Is the DB's performance reduced greatly by changing the parameter to true . Please suggest .
Any other implications as well .
Thanks
Afshin
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The overhead is from 1-10% according to Oracle. I use this parameter (set to TRUE) in all of mine production DBs. It helps you prevent some corruptions by checking if the data in the blocks is self-consistent.
I suggest you use.
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Hi,
Block checking typically causes 1% to 10% overhead, depending on workload. The more updates or inserts in a workload, the more expensive it is to turn on block checking. You should set DB_BLOCK_CHECKING to true if the performance overhead is acceptable.
In case of any help please be free to ask me at rohitsn@altavista.com
Regards,
Rohit Nirkhe,Oracle DBA,OCp 8i
rohitsn@altavista.com
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