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ORA-12154: TNS: Unable to parse the specified connection identifier

Source: Internet
Author: User
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Open PL/SQL Developer today and see the "ORA-12154: TNS: unable to resolve the specified connection identifier" error, which can be connected before, is to connect to my local machine.

View listener-enabled;

The configuration of the tnsnames. ora file is correct;

Local IP Address: (how to connect to the remote host? Check whether the IP address of the remote host is changed. If the IP address of the tnsnames file is reconfigured, the IP address changes occasionally and is dynamic. As a result, the IP address is no problem;

Baidu, it is said that there is a problem with Oraclehome in the Registry: regedit-search ORACLE_HOME, its value found to be inconsistent with the actual path, changed to my actual home value (E: \ oracle \ product \ 10.2.0 \ db_1 ). OK.

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