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Brooke,

On 3/4/12 10:29 AM, Brooke Hedrick wrote:
> There are cases where either or both get restarted, but the issue
> is only when the @otherdb is restarted and not the primary.

So, you have a setup like this:

DBCP --- jdbc ---> Primary --- Oracle --> Secondary

The secondary db is restarted and thus the "Oracle" link essentially
goes down. The next time you make a query across the "jdbc" link to
the secondary database, you get an error.

IMO you can't fix this at the Tomcat end without using a validation
query that tests the end-to-end connection. It really seems like the
wrong place to fix it, anyway. What you really need to fix is the
"Oracle" link, which is surely configured somewhere in Oracle.

Suppose if you could kill the whole pool, you'll get new connections,
but won't the "Oracle" link still be dead? Or, does a db-link co-exist
with the connection to the primary db?

- -chris
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