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Archive log files generating quickly

Mike Ault EXPERT RESPONSE FROM: Mike Ault

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QUESTION POSED ON: 29 November 2005
I have a problem in my database. I am using Oracle9i release 2 with patch 5 as my production database in archive log mode. Yesterday users complained that performance was going down; after than I checked in the database and I found that archive log files are generating very quickly, nearly two archive log files in a minute with a size of 100 MB each. But normally it takes one hour for one archive file to generate. After I restart the database then it runs very smoothly. Then I swtich to the Logminer to see the activities but while generating the output of that archive file from v$logmnr_contents through SYS user, it comes out from the session and throws an error, ORA-03113 saying end-of-communication channel.

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This is probably due to running out of space. The table that used to hold the data from Logminer sessions is actually a virtual table that exists in memory. Another issue is caused by some unresolved bugs in 9i. Jared Still suggests: "Running logmnr_create_replace_metadata is one option, but that is not exactly 'supported'."


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