The JDBC driver for SQL Server that comes bundled with JRun 3.1 server,
(I believe that the OEM the driver from Merant), can lock up the
connection pooler in JRun if SQL Server encounters malformed SQL
statements.

The JDBC driver will report an error stating "Un recognized token" when
the malformed SQL statement is run against the data base.  Following
attempts to use the pooled connection report an error stating "Cannot
use cloned connection ...."

Turning connection pooling off for that defined DataSource alleviates
the errors, but then connection pooling is never used, and slower
performance results.

We have replaced the JDBC driver with a trial product called JTurbo and
everything is fine.  So we are confident that it is the JDBC driver
bundled with JRun server that is the cause of the problem.

Does any know how to resolve this problem or if Allaire has a fix.
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