Trying to Debug PL/ SQL in SQL Developer Raises the ERROR ORA-30683 and ORA-12560

(Doc ID 605370.1)

Last updated on OCTOBER 27, 2016

Applies to:

Oracle SQL Developer - Version 1.5 to 4.0 [Release 1.5.0 to 4]
Information in this document applies to any platform.
***Checked for relevance on 09-20-2013***

Symptoms

Problem Statement:

Using SQL Developer 1.5.1 or above in Production and debugging a procedure in a remote database raises error in the debugging-log tab:

ERROR

Connecting to the database <databasename>.
Executing PL/SQL: ALTER SESSION SET PLSQL_DEBUG=TRUE
Executing PL/SQL: CALL DBMS_DEBUG_JDWP.CONNECT_TCP( '<........> '57936' )
ORA-30683: failure establishing connection to debugger
ORA-12560: TNS:proto adapter error
ORA-06512: at "SYS.DBMS_DEBUG_JDWP", line 68
ORA-06512: at line 1
Process exited.
Disconnecting from the database <databasename>.

Cause

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