Oracle 12d Pluggable Database

Application sometimes stop:

java.sql.SQLRecoverableException: ORA-01033: ORACLE initialization or shutdown in progress

        at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:494)
        at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:441)
        at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:436)
        at oracle.jdbc.driver.T4CTTIoauthenticate.processError(T4CTTIoauthenticate.java:546)
        at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:623)
        at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:252)
        at oracle.jdbc.driver.T4CTTIoauthenticate.doOSESSKEY(T4CTTIoauthenticate.java:519)
        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:615)
        at oracle.jdbc.driver.PhysicalConnection.connect(PhysicalConnection.java:688)
        at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:39)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:691)
        at org.apache.tools.ant.taskdefs.JDBCTask.getConnection(JDBCTask.java:370)
        at org.apache.tools.ant.taskdefs.SQLExec.getConnection(SQLExec.java:940)
        at org.apache.tools.ant.taskdefs.SQLExec.execute(SQLExec.java:612)

Well, this sometimes because we setup the new Pluggable database in Oracle 12c as our database.

Need to login to the DB and do:

ALTER PLUGGABLE DATABASE omnidev OPEN;