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Since you have Oracle 8 and 10g. Check which version of listener you are running.
user13360241 wrote:The error implies that your sid name (xxxx) is wrong in SQL Developer. Have you specified the details in SQLDeveloper exactly as you have in your sqlplus connect string?
our remote server has oracle 8 and Oracle 10G. Oracle 8 installs very long before and oracle 10G installs today.
As sql developer cannot support to 8i; when i try to connect to oracle 10G i get the following error. ORA-12505
I have oracle in my laptop and can connect via sqlplus but cannot connect with sql developer.
C:\>sqlplus sys as firstname.lastname@example.org:1521/xxxx
Not sure if you are running two listeners (one for 8i, one for 10g) on that server. When I had problems connecting to 10g XE and 11g running on the same server, each with its own listener, I read that disabling the 10g listener and updating the 11g listener.ora and tnsnames.ora with entries for 10g solved everything. Always use the listener for the newer Oracle release. Possibly you do not have control over the listener configurations on the server, but this is something to consider.
And here is a thread from a different forum with opinions on when single or multiple listener configurations might be preferred (and some info on how to do it):
Re: Running 10gEE and 10gXE on the same pc
SQL Developer Team
I checked listener.ora based on the information provided, the new installation Oracle 10G has port 1522 and able to connect with SiQL developer. Before i was connecting with port 1521 with sql developer.
I solved my problem but i don't understand one thing here, i tested with both ports 1521 and 1522 from sqlplus both connected successfully.
sqlplus sys as email@example.com:1521/dataint
sqlplus sys as firstname.lastname@example.org:1522/dataint
Can anybody tells the reason?
Thanks to everyone here.
It is difficult to say without knowing your listener setup, but it is possible that the 10g database has autoregistered as a SERVICE with the 8i listener and the service name is different from the SID. The SID is also specified in the 10g listener.ora so you can connect using SQL Developer.
Are you specifiying SID or SERVICE in your SQL Developer connection?