Returns the number of bytes that can be read (or skipped over) from
this input stream without blocking by the next caller of a method for
this input stream.
The CachedConnectionManager mbean manages associations between meta-aware objects
(those accessed through interceptor chains) and connection handles, and between
user transactions and connection handles.
This should be removed when JCA is refactored as POJOs
This is just to avoid the start/stop sequence of CachedConnectionManager
when it is created by a container as CachedConnectionManager tries to locate things
through MBEan calls.
The variable checkValidConnectionSQL holds an sql
statement that may be executed whenever a managed connection is
removed from the pool, to check that it is still valid.