2016-10-21 16:43:51,879 [Thread-4] INFO
    net.sourceforge.squirrel_sql.client.session.SessionConnectionKeepAlive
    - SessionConnectionKeepAlive (DC.stage-db2.zb_dc) running SQL: SELECT 1 FROM DUAL;
2016-10-21 16:43:51,882 [Thread-4] ERROR
    net.sourceforge.squirrel_sql.client.session.SessionConnectionKeepAlive
    - run: unexpected exception while executing sql (SELECT 1 FROM DUAL;):
      ORA-00933: SQL command not properly ended
java.sql.SQLSyntaxErrorException: ORA-00933: SQL command not properly ended
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:445)
    (...)

SELECT 1 FROM DUAL