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How to clear Oracle Alert Log and Trace files using ADRCI command?

Sometime you will face the problem about large alert log and trace files in Oracle database. You can use ADRCI tool to manage them.

  1. Run adrci command

    [oracle@dboraclel1 dboraclel1]$ adrci

ADRCI: Release 12.2.0.1.0 - Production on Tue Aug 21 00:20:25 2018

Copyright (c) 1982, 2017, Oracle and/or its affiliates.  All rights reserved.

ADR base = "/u01/app/oracle"
adrci> show home
ADR Homes:
diag/rdbms/schooldb/schooldb
diag/tnslsnr/dboraclel1/listener
diag/tnslsnr/dboraclel1/listener6
diag/tnslsnr/dboraclel1/listener2
diag/tnslsnr/dboraclel1/listener3
diag/tnslsnr/dboraclel1/listener4
diag/tnslsnr/dboraclel1/listener5
diag/diagtool/user_oracle/adrci_3644429138_107
adrci>

  2. Set home directory to work. If you have only one home folder skip this step.

    set homepath diag/tnslsnr/dboraclel1/listener

  3. Run this command to purge alert log.

    PURGE -age 1440 -type ALERT

    This command will be purge alert log older than 1440 minutes. Parameter age is in minute. You can change for your own.

  4. Run this command to purge trace files.

    PURGE -age 1440 -type TRACE

    This command will be purge trace files older than 1440 minutes. Parameter age is in minute. You can change for your own.
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