RE: WebSphere and ejsadmin

["Richards, Etienne (CAP, PTL)" <Etienne.Richards@xxxxxxxxxx>]

Frances

The database activity seems to be there as long as there are users that are
accessing the web application. I have also made sure that all admin consoles
are closed but it did not help.

Security is enabled on this system but the specific application server
instance that I am testing against does not have any resources protected
(The system only has global security enabled).

When doing a load test of 25 concurrent users and looking at DBMON I found
that the following query

select * from ejsadmin.SE_TABLE where MSG_ID = ?  FOR UPDATE

had a maximum execution time of 33 seconds and an average of 0.091 seconds.
I also found that during that load test that the query was executed 1157
times and that 1153 of those required a full opens.

Is there a way to disabled this?
Do we have something incorrectly configured?

Thanks,
Etienne

-----Original Message-----
From: Frances Stewart [mailto:francess@us.ibm.com]
Sent: Thursday, March 21, 2002 5:59 PM
To: java400-l@midrange.com
Subject: Re: WebSphere and ejsadmin



Is it doing this continuously even after the ready state has been reached
and you are just running stuff in the application server? Do you have an
administrative console connected at all times or only as needed for
administartive tasks? Do you have security enabled or not?

Frances Stewart
WebSphere Application Server for iSeries 400
IBM Rochester




                      "Richards, Etienne
                      (CAP, PTL)"               To:
"'java400-l@midrange.com'" <java400-l@midrange.com>
                      <Etienne.Richards@        cc:
                      penske.com>               Subject:  WebSphere and
ejsadmin
                      Sent by:
                      java400-l-admin@mi
                      drange.com


                      03/21/02 03:50 PM
                      Please respond to
                      java400-l





All,

When WebSphere 3.5.4 runs on the AS/400 it seems as if it is continuously
querying the ejsadmin library. The list of queries below were all executed
in one second.

Can anybody explain why this is done and if we can reduce these queries by
changing something? Most of the times these take about 10ms to complete but
I have found a few where it would take more than 2 seconds to complete.

update ejsadmin.LOCK_TABLE set VAL = ?  where NAME = ?
select * from ejsadmin.REL_INSTANCE_TABLE where REL_ID = ? and SRC_ID = ?
and LINK_NAME = ?
update ejsadmin.LOCK_TABLE set VAL = ?  where NAME = ?
update ejsadmin.LOCK_TABLE set VAL = ?  where NAME = ?
select * from ejsadmin.APPSECURITY_TABLE where INSTANCE_ID = ?
update ejsadmin.LOCK_TABLE set VAL = ?  where NAME = ?
select * from ejsadmin.REL_INSTANCE_TABLE where REL_ID = ? and SRC_ID = ?
and LINK_NAME = ?
update ejsadmin.LOCK_TABLE set VAL = ?  where NAME = ?

Thanks,
Etienne
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