Latency apply for Streams Process APPLY_STREAM exceeds the thresholds set

Question

Hi,
Apply process is working, but it shows error in enterprise manager that *"Latency apply for Streams Process APPLY_STREAM exceeds the thresholds set"*
i have changed parallelism to 5 and commit_serialization to FULL. but still error remains.
how to resolve the error?
can any tell me what is the problem in apply process. am i need to change the parameter.
urgent!!!!!!
please

Answer 1

You can tune your apply server by tracing on the apply process. To do this: identify the PID (Process ID)
APPLY SERVER:
select SID from V$STREAMS_APPLY_SERVER;
With above SIDs, query V$PROCESS to get the PIDs:
select a.pid, b.sid
from v$process a, v$session b
where a.addr=b.paddr and b.sid in(the list of sids from above);
With the PIDs found:
$ sqlplus /nolog
connect / as sysdba
oradebug setorapid <PID>
oradebug unlimit
oradebug Event 10046 trace name context forever, level 12
wait for 10-15 mins
oradebug tracefile_name -- gives pathname / filename to file being written to
oradebug Event 10046 trace name context off
run TKPROF on trace file
you may have to add some indexes on your tables . If possible, each table for which changes are applied by an apply process should have a primary key.
read more in
http://download.oracle.com/docs/cd/B19306_01/server.102/b14228/gen_rep.htm
Section Substitute Key Columns
Edited by: user596799 on Apr 17, 2011 8:24 AM