Reader, December 05, 2003 - 11:09 am UTC
Tom, In the above example, some_db should have been resolved using tnsnames.ora on the box from which we connect to the remote database. Is it correct? Thanks.
December 05, 2003 - 11:27 am UTC
yes, the "local machine"
it could come from a variety of sources on that machine
mike, December 05, 2003 - 4:48 pm UTC
I have inherited:
Sun Solaris, Oracle8174.
there are tnsnames.ora and the tnsnames_production.server_name. the server_name is another server machine. I have found Oracle also uses "tnsnames_production.server_name"
How this could happen?
December 06, 2003 - 8:54 am UTC
does your tnsnames.ora have an ifile command in it?
That's it! thanks!
A reader, December 06, 2003 - 10:25 am UTC
Why does it not work when ORACLE_HOME is a softlink
Tommy Petersen, March 02, 2007 - 3:25 pm UTC
When I do set TWO_TASK or ORACLE_SID, they are not used if my directory for ORACLE_HOME is a softlink. I have updated my ORACLE_HOME to use the real directory name and it works.
We run on Sun Solaris.
March 04, 2007 - 6:29 pm UTC
why does what not work exactly? and what does not work mean?
Why such obscure name - TWO_TASK
A reader, March 05, 2007 - 10:37 am UTC
March 05, 2007 - 2:15 pm UTC
because in days gone by - the 1980's - two tasks (having two tasks working together) just made 'sense'
Just like "modular code" and "subroutine" used to be commonly used... :)
What does not work?
Tommy Petersen, March 05, 2007 - 11:17 am UTC
Sorry, I should have been more specific.
My export does not work when I set ORACLE_SID and using a softlink as ORACLE_HOME.
I get the following errors:
EXP-00056: ORACLE error 1034 encountered
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
SVR4 Error: 2: No such file or directory
March 05, 2007 - 2:27 pm UTC
you have to use the same ORACLE_HOME + ORACLE_SID with export as you used to start the database with.
we generate the key for the shared memory as a function of the oracle_home+oracle_sid
If you used the "soft linked" oracle_home as the oracle_home when you type startup - then it would work (but the real oracle home would not work)
listener could not resolve SERVICE_NAME
Vikash, July 26, 2007 - 1:49 am UTC
When I am trying to connect Oracle using ODBC I am getting this in listener.log * my app gives error .. DB conn failed(Invalid service name)..
(CONNECT_DATA=(SERVICE_NAME=192.168.0.13)(CID=(PROGRAM=cubadmserv.odbc")(HOST=Amit)(USER=root))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.13)(PORT=34089)) * establish * 192.168.0.13 * 12514
TNS:listener could not resolve SERVICE_NAME given in connect descriptor
July 27, 2007 - 8:25 am UTC
umm, well - the message seems to say it all.
the service name you used in your tnsnames.ora on the client was not able to be resolved on the server - the listener you connected to did know what that service was.
if you have lsnrctl - use it to connect to that listener and list the services.
Secure password store
Edgar, February 07, 2011 - 9:19 am UTC
Unfortunately, TWO_TASK does not work together with "secure password store" (10g,11g).
If secure password store is configured using mkstore, you can use
$ sqlplus /@tnsalias
to connect to the remote database without a password.
But You cannot do
$ export TWO_TASK=tnsalias
$ sqlplus /