What's the difference between Pretest existing pooled connections and prestest new connections in websphere 6.1..and which option is best one?
can we enable both options?
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A:
You may enable both options simultaneously.
Pretesting existing pooled connections is much more useful because it deals with the common issue of stale connections within a pool of already opened connections. If the pretest fails, the connection is discarded and a new connection is established. "Active" connections are not pretested so the performance impact is limited. Otherwise, you would need to handle StaleConnectionExceptions as per:
Pretesting new connections is less useful but you can enable it if you'd like to get an "early warning system."
schizoidboy
2009-07-14 20:16:15