we are seeing JBDC connection issues on our servers whenever DB was brought down.
Connections were not able to re connect the DB is back up.
we are on windows, every weekly either DB were patched and windows servers were patched.
we have connections- SQL, Oracle, DB& DB2400, sometimes all the connections fail throwing the below error.
“Invalid operation: Connection is closed. ERRORCODE=-4470, SQLSTATE=08003”
If we restart the connection, everything works fine.