Clear Alert log /Trace file in Oracle 11g using adrci

adrci command line

:ON Database  SID (alert log & trace file)
show home

set homepath diag/rdbms/db_sid/db_sid

show alert -tail
show tracefile -tail

PURGE -AGE 7200 -TYPE ALERT;

  
:ON Listener log (alertlog & tracefile)
show home
set home diag/tnslsnr/db_hostname/listener

show alert -tail
show tracefile -tail

PURGE -AGE 7200 -TYPE ALERT;


-age in sec