1.到listener里面，查看对应的log_file和log_status[oracle@bys3 log]$ lsnrctl
lsnrctl for linux: version 11.2.0.4.0 - production on 06-dec-2013 10:27:11
copyright (c) 1991, 2013, oracle. all rights reserved.
welcome to lsnrctl, type help for information.
lsnrctl> show log_file
connecting to (description=(address=(protocol=tcp)(host=bys3.bys.com)(port=1521)))
listener parameter log_file set to /u01/diag/tnslsnr/bys3/listener/alert/log.xml
the command completed successfully
lsnrctl> show log_status
connecting to (description=(address=(protocol=tcp)(host=bys3.bys.com)(port=1521)))
listener parameter log_status set to on
the command completed successfully
2.先去监听日志的目录里面并查看大小从监听里用show log_file得出日志文件的地址 ---测试机没怎么用依然有8m大小的日志
[oracle@bys3 alert]$ du -sh log.xml
8.0m log.xml
3.现在可以关闭listener loglsnrctl> set log_status off
connecting to (description=(address=(protocol=tcp)(host=bys3.bys.com)(port=1521)))
listener parameter log_statu. try help
4.然后mv以前的日志文件[oracle@bys3 alert]$ mv log.xml log.xmla
5.再开启listerer loglsnrctl> set log_status on
connecting to (description=(address=(protocol=tcp)(host=bys3.bys.com)(port=1521)))
listener parameter log_status set to on
the command completed successfully
lsnrctl> show log_file
connecting to (description=(address=(protocol=tcp)(host=bys3.bys.com)(port=1521)))
listener parameter log_file set to /u01/diag/tnslsnr/bys3/listener/alert/log.xml
the command completed successfully
6.查看日志文件已经自动生成了，原来的日志文件就可以慢慢处置了。[oracle@bys3 alert]$ ls
log.xml log.xmla
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