ADR – Automatic Diagnostic Repository

Changing listener-log directory

to change the directory of listener.xml in 11g
set in listener.ora

ADR_BASE_<listenername>=directory

e.g.
ADR_BASE_LISTENER=/var/opt/oracle

the informations will be written to  e.g.

/var/opt/oracle/diag/tnslsnr/server/listener/alert/log.xml