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TNS-12560: TNS: ЭÒéÊÊÅäÆ÷´íÎó
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ORA-12154: TNS:could not resolve the connect identifier specified 
Cause: A connection to a database or other service was requested using a connect identifier, and the connect identifier specified could not be resolved into a connect descriptor using one of the naming methods configured. For example, if the type of connect identifier used was a net service name then the net service name could not be found in a naming method repository, or the repository could not be located or reached.

Action: - If you are using local naming (TNSNAMES.ORA file):

- Make sure that "TNSNAMES" is listed as one


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