RE: interpret v$mts

Hi,

Just looking at these statistics is not enough 
Is the problem in the dispatchers or the servers?
Try monitoring busy rate and available servers in this
period. Anything known about the scope of this problem
all users concerned?

Regards,

Jeroen

My set of sql to show mts info

set term off
set feedb off head on
col network     heading 'Protocol'  format   A50 justify c
col busy_rate   heading 'Busy Rate %' format   990.0 justify right
set term on
PROMPT Network statistics
Prompt
Prompt Busy rate should not be more then 50%
select  network,
        sum(busy)*100 / (sum(busy) + sum(idle)) busy_rate
from    v$dispatcher
group by network
/
set head off
PROMPT
Prompt
Prompt There should be servers and dispatchers waiting for new requests:
select 'Dispatchers ' ||status, count(STATUS) 
        from v$dispatcher group by status
/
select 'Shared servers:'||status,count(status) 
        from v$shared_server group by status
/
set head on

select * from v$mts;
exit

-----Oorspronkelijk bericht-----
Van: Barbara Baker [mailto:barbarabbaker@xxxxxxxxx] 
Verzonden: Friday, May 28, 2004 11:42 PM
Aan: oracle-l@xxxxxxxxxxxxx
Onderwerp: interpret v$mts


Dick (if you're out there) or someone who understands
this mts stuff:

We're still having problems with slowness.  I know you
told me to just keep adding servers till the screaming
stopped.  I didn't listen too carefully. . .

I'm wondering if you can tell me if I'm interepreting
this correctly.  mts_servers is set to 30.  At 10:09
this morning, my servers_highwater was 34. Here's
select * from v$mts at 10:09

MAXIMUM_CONNECTIONS           : 894
MAXIMUM_SESSIONS              : 893
SERVERS_STARTED               : 4
SERVERS_TERMINATED            : 4
SERVERS_HIGHWATER             : 34
-----------------


at 10:49, looked like this:

MAXIMUM_CONNECTIONS           : 936
MAXIMUM_SESSIONS              : 936
SERVERS_STARTED               : 37
SERVERS_TERMINATED            : 37
SERVERS_HIGHWATER             : 52
-----------------

So does that mean that in 40 minutes, it started 33
servers?  If so, isn't that, like, obscene??  

I assume there's overhead associated with starting up
these servers.  Should I be setting mts_servers to
something extremely high (like around 50)?  It was
within this 40 minutes that we saw extreme slowness. 
I don't know if I'm looking cause or effect, but it
seems pretty strange to me that we needed an
additional 30 servers in a 40 minute period.  

Thanks for any advice on this one.

Barb




        
                
__________________________________
Do you Yahoo!?
Friends.  Fun.  Try the all-new Yahoo! Messenger.
http://messenger.yahoo.com/ 
----------------------------------------------------------------
Please see the official ORACLE-L FAQ: http://www.orafaq.com
----------------------------------------------------------------
To unsubscribe send email to:  oracle-l-request@xxxxxxxxxxxxx put
'unsubscribe' in the subject line.
--
Archives are at http://www.freelists.org/archives/oracle-l/
FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------
----------------------------------------------------------------
Please see the official ORACLE-L FAQ: http://www.orafaq.com
----------------------------------------------------------------
To unsubscribe send email to:  oracle-l-request@xxxxxxxxxxxxx
put 'unsubscribe' in the subject line.
--
Archives are at http://www.freelists.org/archives/oracle-l/
FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------

Other related posts: