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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Which node to use for Database operations in WMQI?

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jimliu
PostPosted: Thu Jul 18, 2002 7:02 am    Post subject: Which node to use for Database operations in WMQI? Reply with quote

Novice

Joined: 19 Dec 2001
Posts: 12
Hi,

I'm trying to perform a database operation in WMQI. Now I'm looking thru the WMQI manuals as well as the redbooks and I am thoroughly confused. I'm noticing that for simple operations such as an insert, I could possibly use 3 different nodes to perform the same operation...DataInsert, Database and Compute.

My question is what advantages/disadvantages are there for using one over the other? Is one node better suited to handle one type of situation over another? I guess I'm just not understanding when to use which node in what situation.

Any help would be greatly appreciated.

Thanks,

Jim
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devans
PostPosted: Thu Jul 18, 2002 7:51 am    Post subject: Reply with quote

Apprentice

Joined: 18 Mar 2002
Posts: 43
The three nodes will all do the same thing for you, but there are a couple of factors which might help you make your decision.
* When glancing at a flow, using a specialised node such as DataInsert will make it immediately obvious what operation you are performing. (i.e. inserting to a database). This may or may not be important to you
* A Compute node is more flexible if you want to modify the operation in the future.
* Try and minimise the number of nodes in your flow. Everytime you pass through a node you incur some overhead. Having four DataInsert nodes wired together is less efficient than writing four ESQL INSERTs within one compute node.
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