What are cvutrace.log.* files

 I was looking to clear some space recently and ran across a 21G directory (<grid_infrastructure_home>/cv/log). Inside there were a lot of files like “cvutrace.log.0_20100720015347″. These files are log files related to a RAC installation. They can safely be deleted.

To stop the files from being generated is add the following at the top of the cluvfy script in the <grid_infrastructure_home>/bin directory.



Windows:
set SRVM_TRACE=false

AIX:
export  SRVM_TRACE=false

An example of logon trigger

By user and by Module:
CREATE OR REPLACE TRIGGER SET_OPTIMIZER_ONLOGIN AFTER LOGON ON DATABASE
DECLARE
uname VARCHAR2(30);
app VARCHAR2(30);
cmmd VARCHAR2(64);
BEGIN
cmmd:='ALTER SESSION SET optimizer_index_cost_adj=20';
uname:=SYS_CONTEXT('USERENV','SESSION_USER');
app := upper(SYS_CONTEXT('USERENV','MODULE'));
IF uname = '*****' and app like 'SQLPLUS.EXE' then
   EXECUTE IMMEDIATE cmmd;
END IF;
EXCEPTION
WHEN OTHERS THEN
NULL;
END;
/

By module only:
CREATE OR REPLACE TRIGGER SET_OPTIMIZER_ONLOGIN AFTER LOGON ON DATABASE
DECLARE
app VARCHAR2(30);
cmmd VARCHAR2(64);
BEGIN
cmmd:='ALTER SESSION SET optimizer_index_cost_adj=20';
app := upper(SYS_CONTEXT('USERENV','MODULE'));
IF app like 'RUNBATCH.EXE' then
   EXECUTE IMMEDIATE cmmd;
END IF;
EXCEPTION
WHEN OTHERS THEN
NULL;
END;
/