1)To avoid generating or reduce the xml files, please set the following parameter:
In sqlnet.ora
In listener.ora
Where the should be replaced with the actual name of the configured listener(s) in the listener.ora file.
For example, if the listener name is 'LISTENER_SCAN1', the parameter should be:
DIAG_ADR_ENABLED_LISTENER_SCAN1=OFF
-Reload or restart the TNS Listener for the parameter change to take effect.
设置这两个参数不会影响到listener.log日志的产生。
相比直接关闭Listener log的方式，还保留原有日志的产生.
参考：
Excessive Listener XML FILES CREATED IN $GRID_HOME/log/diag/tnslsnr (Doc ID 1927067.1)
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