ORA-12505, TNS:listener does not currently know of SID given in connect descriptor. Eclipse and Fedora 20 via JDBC

Question

I\'ve installed Oracle 11g XE on a Fedora 20 Virtual Machine, configured it and set the enviroment variables (running the oracle_env.sh). I\'ve got this error w

Answer 1

Troubleshooting:

1. remove listener.ora (for this initial setup, you don't need it. make a backup of it)
2. lsnrctl reload

or

add XE to your SID_LIST like:

SID_LIST_LISTENER = 
  (SID_LIST = 
     (SID_DESC =
       (SID_NAME = XE)
       (ORACLE_HOME = /u01/app/oracle/product/11.2.0/xe)
     )    
     (SID_DESC = 
      (SID_NAME = PLSExtProc) 
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/xe) 
      (PROGRAM = extproc) 
    ) 
  )

lsnrctl reload

check the alert log for messages.