JDBC Adapter's Strange Behavior...

We have Oracle Database & three Integration Server instance on the same machine.
JDBC Adapter connection setting’s are available on each IS.
In addition, JDBC pooling options are enabled…

Somtiems (about one times a day) Adapter Service not work, and error occured…
I don’t know when, where and who Oralce instance are restarted or disabled…
But, the other service on another IS instance work fine on the same target database.

My Trial

  1. JDBC connection disable and re-enabling ← NOT WORK
  2. Edit service and saving with No real edition ← OK It’s work
  3. Reloading related package ← OK It’s work

How can I solve this problem…
I wonder of this strange situation…
Thanks in advance for your help…

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SUN / Solaris
Oracle 8.1.7
webMethods 6.0.1 with SP2
JDBC Adapter 6.0.2