WARNING: AQ_TM_PROCESSES is set to 0. System operation might be adversely a

Question

Hi All,
We have a dataguard setup for 10g database on AIX platform.
In the primary database alert log file ,we see the below warning.What do we need to do regarding this.Is this really going to affect the performance and what is it related to.
WARNING: AQ_TM_PROCESSES is set to 0. System operation might be adversely affected.

Answer 1

In 10.2, it is recommended to leave the parameter aq_tm_processes unset and let the database auto-tune the parameter.
Setting aq_tm_processes parameter explicitly to zero which disables the time monitor process (qmn), can disrupt the operation of the database due to several system queue tables used when the standard database features are used.
Hey, check your post from yesterday too and I come back with a fix for this
Best Regards
mseberg
Before you do anything read this :
"Warning: Aq_tm_processes Is Set To 0" Message in Alert Log After Upgrade to 10.2.0.3 or Higher [ID 428441.1]
Run this as sysdba
declare
mycheck number;
begin
select 1 into mycheck from v$parameter where name = 'aq_tm_processes' and value = '0'
and (ismodified <> 'FALSE' OR isdefault='FALSE');
if mycheck = 1 then
dbms_output.put_line('The parameter ''aq_tm_processes'' is explicitly set to 0!');
end if;
exception when no_data_found then
dbms_output.put_line('The parameter ''aq_tm_processes'' is not explicitly set to 0.');
end;
/If it is set to zero try to clear it.
alter system reset aq_tm_processes scope=spfile
Beware this requires a database bounce.
If you find this helpful please mark it so
Edited by: mseberg on Jul 20, 2011 9:55 AM
PS
This isn't a fire, you can wait to deal with it if you can stand the error messages that will keep coming.
Edited by: mseberg on Jul 20, 2011 10:00 AM