Performance Problem between Ora 10g and Psql

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Hello!

We're facing a performance problem here in a Oracle 10g -> PostgreSQL environment. The Oracle DB accesses the PostgreSQL DB via UnixODBC + psqlODBC.

There are some 100 records on the Oracle DB to be updated with data obtained from a view of the PostgreSQL DB. The fetched data accumulates to a few kB's and the update takes some 5 - 7 hours. During this time the PostgreSQL machine is running at approx. 100% CPU usage.
If a select for the same data is issued from the Oracle DB the statement is executed in half a second.

Is this the correct place to issue this problem?

How can I trace down the cause for this performance problem?

Thanx in advance!


Regards,
Thomas Radnetter

p.s. Mr. Ludek Finstrle, can you help again?



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