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I’ve successfully used Oracle Database 11g Release 2 (11.2.0.1.0) to connect oracle from .Net. (in reference Oracle.DataAccess.dll version was 2.112.1.0).
But when I installed ODP.NET and when I am trying to connect to oracle, it gives me an error: “ORA-12154: TNS:could not resolve the connect identifier specified”.
How can I solve this problem?
Thanks!
This usually occurs when your oracle client is not in the PATH of your computer.
Make sure that the
PATHenvironment variable contains both<Oracle client path>and<Oracle client path>\bin.Also, this can happen if the
SIDof the database you want to connect to is simply not defined in thetnsnames.orafile under your oracle client installation path. If I recall correctly – it is under<Oracle client path>\network\admin\tnsnames.oraEdit: The registry should contain an ORACLE entry set under:
HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\There should be a key named
HOME0with string values: ORACLE_HOME and ID. I assume there are other values required as well – but those two I’m sure of. Check that ORACLE_HOME points correctly to the oracle client location.