title: JDBC returns 01034 error from Oracle 12c, but SqlPlus ok
body: <p>using Java7, with ojdbc7.jar in classpath</p>
  
  <p>works on Windows, with 12c db and Java7 app on same server</p>
  
  <p>fails on AIX, with db and app on different servers</p>
  
  <p>(unfortunately do not have login access to the AIX db server)</p>
  
  <p>12c tnsping SID succeeds on AIX app server, displaying same HOST and PORT as JdbcUrl=HOST:PORT:SID used by Java7 app</p>
  
  <p>12c sqlplus is able to connect successfully to db, but jdbc connection attempt returns the following error:</p>
  
  <p><em>ORA-01034: ORACLE not available 
  ORA-27101: shared memory realm does not exist 
  IBM AIX RISC System/6000 Error: 2: No such file or directory 
  Additional information: 2311 
  Additional information: 214767799</em></p>
  
  <p>(sqlplus is able to connect, so please do not suggest Oracle startup)</p>
  
  <p>thanks in advance for any suggestions on troubleshooting either the Java7 client app or the remote db server JDBC connectivity</p>