I guess they think that no one should use TAF, which requires the thick
driver.
The poor scalability of the app couldn't have anything to do with the
application.
Could it? ;)
Jared
Rick Stephenson <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
04/02/2003 07:28 AM
Please respond to ORACLE-L
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
cc:
Subject: Oracle OCI JDBC Driver Not Recommended for Multiprocessor
Machine
Sun's FAQ on java hotspot VM performance
(http://java.sun.com/docs/hotspot/PerformanceFAQ.html) includes this interesting
question:
My application uses a database and doesn't seem to scale well. What could
be going on?
Oracle provides two types of database drivers: a type-2 driver, called the
OCI (Oracle Call Interface) driver that utilizes native code, and a type-4
pure Java driver called the thin driver. In single processor environments,
the thin driver works somewhat better than the OCI driver because of the
JNI overhead associated with the OCI driver. On multi-processor
configuations, synchronization points within Solaris used by the OCI
driver become big bottlenecks and prevent scaling. We recommend using the
thin driver in all cases.
Is this actually the case? Does anyone have more information on this?
Thanks,
Rick Stephenson
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