Tolerate JDBC server errors caused by disconnnect.

src/main/java/com/ibm/as400/access/AS400JDBCConnectionRedirect.java

@@ -610,10 +610,12 @@ boolean handleException(SQLException e) throws SQLException {
     int sqlCode = e.getErrorCode(); 
     String sqlState = e.getSQLState(); 
     if (((sqlCode == -99999) &&
-        ((JDError.EXC_COMMUNICATION_LINK_FAILURE.equals(sqlState)) ||
-        (JDError.EXC_CONNECTION_UNABLE.equals(sqlState))))
+         ((JDError.EXC_COMMUNICATION_LINK_FAILURE.equals(sqlState)) ||
+          (JDError.EXC_CONNECTION_UNABLE.equals(sqlState))))
         || ( sqlCode == -7061  && should7061Reconnect(e))
+        || (sqlCode == -401 && JDError.EXC_SERVER_ERROR.equals(sqlState)) /* also retry for server errors */ 
         ) {
+
       // We do not use EXC_CONNECTION_NONE, since that is what is returned
       // after the connection has been closed or aborted.
       // 

src/main/java/com/ibm/as400/access/PxClientConnectionAdapter.java

@@ -102,8 +102,8 @@ public void close ()
                throw new ProxyException (ProxyException.CONNECTION_DROPPED,e);
            }
 
-           // $$ Question for Jim, his new class skipped the above
-           //    two funtions -- input_.close() and output_.close().
+           // $$ Question, the new class skipped the above
+           //    two functions -- input_.close() and output_.close().
            //    If a good idea then remove from here as well.
            try {
                socket_.close ();