title: oracle sql DEVELOPER ORA-12535: TNS:operation timed out
body: <p>I am using Oracle SQL Developer 4.0.2.15.21 and I want to debug a PROCEDURE. I am unable to do this as I get the following error message...</p>
  
  <p>Executing PL/SQL: ALTER SESSION SET PLSQL_DEBUG=TRUE<BR>
  Executing PL/SQL: CALL DBMS_DEBUG_JDWP.CONNECT_TCP( '192.168.1.88', '54159' )<BR>
  ORA-30683: failure establishing connection to debugger<BR>
  ORA-12535: TNS:operation timed out<BR>
  ORA-06512: at "SYS.DBMS_DEBUG_JDWP", line 68<BR>
  ORA-06512: at line 1<BR>
  Process exited.<BR></p>
  
  <p>Can anyone help me ?</p>