Database Networking (MOSC)

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arraysize / oci fetch size

in Database Networking (MOSC) 3 comments

Hi,


When using sqlplus on a slow network connection a higher "set arraysize"can improve the performance dramatically. I've tested it and increasing the array size to 300 can make the query 5 times faster (elapsed time).

But we have a legacy application which does lots of roundtrips to the database so I was wondering if the arraysize (oci fetch size?) can be increased in any way. Some sqlnet.ora of tnsnames.ora setting maybe (like SDU setting) ?

The Oracle RDBMS version is 12.2.0.1 EE.

regards,

Ivan

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