oracle database log file

1. By default, oracle log files are recorded in the $ORACLE/rdbms/log directory
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　　[oracle@oracle log]$ pwd
　　/home/oracle/oracle/product/10.2.0/db_1/rdbms/ The log
　　log file is (alert_<ORACLE_SID>.log):
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　　[oracle@oracle log]$ ll
　　total 848
　　-rw-rw-r-- 1 aaa aaa 962 06-20 15:57 alert_TESTDB.log
　　
　　2 , if it is not in the default location, you can query the log file location through sql:
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　　SQL> show parameter dump_dest
　　
　　NAME                                 TYPE
　　---------------------- -------------- ------------
　　VALUE
　　------------- -----------------
　　background_dump_dest string
　　/home/oracle/oracle/admin/TESTDB/bdump
　　core_dump_dest string
　　/home/oracle/oracle/admin/TESTDB/cdump
　　user_dump_dest string
　　/home/oracle/oracle/admin/TESTDB/udump
　　The value of background_dump_dest is the log file storage location