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ORA-12154: TNS could not resolve service name specified

Sometimes you will see the error message related to tns. Error message will be like this. ORA-12154: TNS could not resolve service name specified Solutions Check if your listener is up and running Check if listener is listening to database services. Look for tnsnames.ora file. database entry needs to be available there Syntax error in …

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ORA-16047: DGID mismatch between destination setting and target database

In our previous blog ,We have seen how to resolve the dataguard ORA- error related to ORA-19573: cannot obtain exclusive enqueue for datafile 1 RM. In this blog, I will explain you about the ORA-16047: DGID mismatch between destination setting and target database Let us see how to resolve this issue. Explanation: While working with …

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