This is nothing you can solve or prevent at the WebLogic end. The error message is clear that the DBMS
is telling you it is shutting down. Nothing good can happen by this to open JDBC connections. Yes the
DBMS is busy; busy putting it's final affairs in order, and queries will only pend for a short while till they
die completely, when the DBMS turns itself off completely. If what you're saying is that you get this message
and then the DBMS never dies but remains in a zombie state, you must call MS for DBMS support.