Ora-12203 Tns:unable To Connect To Destination
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  1. #1
    Join Date
    Apr 2002
    Posts
    36

    Ora-12203 Tns:unable To Connect To Destination

    Hi,


    I have installed oracle 8i (SID = ORACLE) in the home "oracle/ora81", and the oracle dev6i in the home "oradev6i", therefore in two different oracle_homes.


    I have copied the file tnsnames.ora from oracle/ora81/network/admin TO oradev6i/net80/admin


    when I try to connect to database from forms builder with the sid "ORACLE" I have the followong message :

    ORA-12203 TNS:UNABLE TO CONNECT TO DESTINATION

    what's the problem please ?

    thanks...
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  2. #2
    Join Date
    Jul 2002
    Location
    Washington DC
    Posts
    110
    Keep tnsnames.ora file in /oracle/ora81/network/admin directry.
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  3. #3
    Join Date
    Aug 2000
    Location
    Chicago IL
    Posts
    586
    do lsnrctl status: if you get the following message

    TNS-12541: TNS:no listener
    TNS-12560: TNSrotocol adapter error
    TNS-00511: No listener
    32-bit Windows Error: 61: Unknown error
    then your listener is not up. goto services and start your listener.

    Jigar

    also....mkumarnk is correct too
    "High Salaries = Happiness = Project Success."
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  4. #4
    Join Date
    Apr 2002
    Posts
    36
    yes mkumarnk but the tnsnames.ora exists also in oracle/ora81/network/admin, I dont' delete it, I just copied it to the path of developer (oradev6i/net80/admin) OTHERWISE I would have the error :ORA12154 COULD NOT RESOLVE SERVICE NAME.


    thanks jlakhani, but How can I start listener, I am on WIN98 not on WINNT??

    another suggestion ???
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  5. #5
    Join Date
    Jun 2000
    Location
    Madrid, Spain
    Posts
    7,448
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