Thread: Cannot connect to auxiliary instance posted by William Wong

Question

I am experiencing the same issue and I am able to get the suggestion to work connecting to both the target and auxiliary databases on the auxiliary server, but I don't know where to go from there. Do I go back to the target server and continue from there?
This is on 2 identical linux boxes running Oracle 10.2.0.6.

Answer 1

Your problem I think is that the listener on the auxiliary server is likely to have the status of this service (shown with lsnrctl servcies) as BLOCKED.
What you need to do is, on that server, edit the listener.ora and add a static SID_LIST section to the file, so that the listener will report that service as status UNKNOWN. That is, there will be two statuses listed for the same service, one BLOCKED because that's coming from dynamic registration and one UNKNOWN because that's what the SID_LIST says.
An example listener.ora would look like:
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = PLPC358)(PORT = 1521))
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = TESTDB)
      (ORACLE_HOME = c:\oracle\10g\db_1)
      (SID_NAME = TESTDB)
  )You will have to make sure that on the server where you're running RMAN (effectively, the client for this occasion), the auxiliary instance is listed in the tnsnames.ora with a SID=TESTDB sort of line, rather than a SERVICE=TESTDB. If you try to connect via 'service=' aliases, you'll be trying to connect via the BLOCKED "socket" on the auxialiary instance. If you connect via a "sid=" alias, you'll be connecting via the UNKNOWN socket, and that's what you want.
Message was edited by:
Catfive Lander
I should have read your earlier post more carefully. I see you already have the UNKNOWN instance listed on the auxialiary server, so I think you're half-way there. I think you just need to make sure the tnsnames.ora used by your RMAN machine refers to SID= not SERVICE=