JDBC-Connection in SQL-Developer via Connection-Manager gives ORA-12529

Question

Hi !
This is a followup of this Thread: https://community.oracle.com/thread/3568462
I have the same problem but I have ConnectionManager 11g (11.2.0.1.0) , which doesn't know the setting for AUTHENTICATION_LEVEL=0
And I have to use JDBC, so the OCI/Thick-driver is no option for me.
The same error is raised when I use JDBC with Eclipse,...
SQL-Plus over the Connection-Manager works without any problems.
The ruleset of my cman.ora is:
(rule_list=
    (rule=
       (src=*)(dst=*)(srv=*)(act=accept)
       (action_list=(aut=off)(moct=0)(mct=0)(mit=0)(conn_stats=on))
The error is:
Listener refused the connection with the following error:
ORA-12529, TNS:connect request rejected based on current filtering rules
Anyone got jdbc-connections over ConnectionManager 11g+ running?
Charly

Answer 1

Using Windows XP/Vista...
After testing in our environment, it appears that SQL Developer 1.5.1 (5440) does in fact ignore the TNS_ADMIN environment variable and ONLY looks in the Oracle Home directory (network/admin). We define a central network location for our tnsnames file and have the tns_admin setup to point there instead of locally for our users.
When selecting to add a new connection (in 1.5.1, it works in previously releases... meaning 1.2.something) and selecting TNS, the drop-down remains empty. However, if I exit SQL Developer and then copy the tnsnames file to the local network/admin directory I can then re-launch SQL Developer and the drop-down is populated. Exiting SQL Developer again, deleting the local copy of tnsnames, and then launching SQL Developer yet again results in the drop-down being empty.
All other Oracle-related applications function as expected (as they have for years) using the TNS_ADMIN environment variable.
Any suggestions/ideas?