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| MQGuy2000 |
 Posted: Tue Aug 03, 2004 10:21 am Post subject: Does the broker use the broker database during runtime? |
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Centurion
Joined: 20 Jul 2003
Posts: 131
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hi Gurus
Does the WMQI Broker need the Broker Database while processing the message?
Thanks in anticipation. |
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| JT |
| Posted: Tue Aug 03, 2004 11:21 am Post subject: |
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Padawan
Joined: 27 Mar 2003
Posts: 1564
Location: Hartford, CT.
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I think the WebSphere Business Integration Message Broker V5 Overview and Architecture redbook states it succinctly:
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| The primary runtime component is the broker. Brokers contain a number of execution groups, which are processes in which message flows are run. Each broker uses a database to store the information it needs to process messages at runtime. |
I would assume this statement also applied to the previous versions of MQSI/WMQI. |
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| smdavies99 |
| Posted: Thu Aug 05, 2004 5:25 am Post subject: Broker Database usage |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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There is another question that the original question could mean.
Does the broker use the database during the actual processing of a message? i.e. the broker has been started, the executions groups spawned and the message flow started. Does the broker/execution group/message flow make calls to the broker database while it is processing messages.
IMHO, if you were desiging something for the best performance you would make as few external calls as possible especially as not every flow would use a database anyway.
Possibly other readers may know different?
S
_________________
WMQ User since 1999
MQSI/WBI/WMB/'Thingy' User since 2002
Linux user since 1995
Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions. |
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| Heinz57 |
| Posted: Thu Aug 05, 2004 6:04 am Post subject: |
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Apprentice
Joined: 21 Jan 2004
Posts: 26
Location: Syracuse, NY
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| I know that certain tables in the broker database ARE used during runtime. We have had issues, for example, where we have had to delete rows in the Baggregate table that were stale from a processing exceptions. This was in V2 though. |
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| wooda |
| Posted: Thu Aug 05, 2004 7:16 am Post subject: |
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Master
Joined: 21 Nov 2003
Posts: 265
Location: UK
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| If you are using the Aggregation nodes then the broker will definitely be continuosly using the database. |
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