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Ways to reduce log file sync Oracle?
Colleagues, good day!
It so happened that, on duty, I ran into a bunch of apache2 + oracle.
Everything was going well and just fine, but in the last month, oracle began to slow down significantly, the response and commit times increased.
Event Waits Time(s) Avg wait (ms) % DB time Wait Class
log file sync 196,449 77,420 394 97.25 Commit
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Hardly there apache goes to Oracle, not? Probably there is some kind of software written by krivoruk developers in php? And each click on the page generates hundreds of queries in the database. Check whether commits are being made after each insert/update, well, look at iostat/vmstat, what's with the disks? Can change to ssd or a fast disk array.
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