Reading oracle tables through Microsoft Access


Does reading Oracle tables using Microsoft Access slow down resources?
moriniaAdvanced Analytics AnalystAsked:
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any database activity will "consume" some resources (cpu, network, disk, memory, etc)

and, an inefficient query could consume an unnecessarily large amount on either or both databases

but there is nothing inherent in ms access that will automatically mean oracle would be slow,  nor anythin inherent to oracle that will automatically mean access would be slow
slightwv (䄆 Netminder) Commented:
Slow what resources down?  Oracle database, PC running Access, Network, ??? what are your concerns?

From the Oracle side: It should be just like running any other query.
From the network side:  Just like pulling the results of any query across the network.
From the Access side:  It has to handle all the data brought back.
moriniaAdvanced Analytics AnalystAuthor Commented:
Thanks experts for your feedback. A prior company I worked for did not allow access to the data warehouse or any of our major servers. We were told because Access as a resource hog and would slow down other access to the tables. I was just confirming since I thought that is what I remembered.
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slightwv (䄆 Netminder) Commented:
It is all about the queries.

A poorly written query no matter what tool/program uses it, will hurt performance.

I don't know anything off the top of my head that would cause a query from Access to hurt performance more that the same query executed from the same machine using sqlplus.
somebody using access probably created a bunch of linked tables and wrote some expensive queries which taxed the oracle database and server with tons of IO requests, flooded the network trying to pump all of the data back and crushed someone's pc that couldn't handle all of the results.

That's not access's fault though.

I suppose it could be a problem with ODBC settings defining the connection parameters.  Like small array fetch sizes which means more io requests and more resource consumption.

Again, that's not really a problem in access per se, but from the dba's perspective it's "that windows box running access " that is causing the problem

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johnsoneSenior Oracle DBACommented:
Depends on what you are doing.  If you are using the query builder in Access then yes.  It generates absolutely horrid queries.  Very poorly constructed and definitely contributed to extreme issues on the database side.

If you are doing pass thru queries, then it is like running any other query.  Only as good as the person writing them.
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