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Don Burleson Blog 









Oracle Archive Log Files

Oracle Database Tips by Donald Burleson



I have 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, I checked the database; the archive log files are generating very quickly, nearly 2 archive log files in a minute,  100 mb each. Normally it takes one hour for one archive file to generate.

I restarted the database then it runs very smoothly. I switch to the log miner to see the activities from the archive log file but while generating the output of the archive file v$logmnr_contents through  SYS user the session ends abruptly and a ORA-03113 error message appears saying, "end-of-communication channel".

Please solve my problem!!

This question posed on 29 November 2005


This is probably due to running out of space. The table used to hold the data from log miner 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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