title: Io exception: Oracle Error ORA-12650 in Oracle Cloud
body: <p>I have been using Oracle cloud PAAS linux server for my DB machine (Oracle 11g) and having linux application server where i can run all my Java applications.</p>
  
  <p>Assume i have spring based web application which can connect cloud DB machine. I have tried to access the schema in Toad for oracle, it is working as expected but when i try to hit the DB for retrieving the data from application it gives below error.</p>
  
  <pre><code>java.sql.SQLException: Io exception: Oracle Error ORA-12650
      at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
      at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
      at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)
      at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)
      at oracle.jdbc.driver.PhysicalConnection.&lt;init&gt;(PhysicalConnection.java:420)
      at oracle.jdbc.driver.T4CConnection.&lt;init&gt;(T4CConnection.java:165)
      at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
      at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
      at java.sql.DriverManager.getConnection(DriverManager.java:582)
      at java.sql.DriverManager.getConnection(DriverManager.java:154)
      at GetConnection.main(GetConnection.java:35)
  </code></pre>
  
  <p>I have also tried to extend the service access from SID to service name in DB machine. Still give same error. Same code works fine in another cloud machine, which was set by us. But this cloud machine was done by oracle team and most of the things are by default.</p>
  
  <p>Please share your suggestion to fix this issue.</p>