How do you fix Ora 12545 Connect failed because target host or object does not exist?

Action: Ensure the ADDRESS parameters have been entered correctly; the most likely incorrect parameter is the node name. Ensure that the executable for the server exists (perhaps “oracle” is missing.) If the protocol is TCP/IP, edit the TNSNAMES. ORA file to change the host name to a numeric IP address and try again.

How do I fix Ora 00980?

This ORA-00980 errors are related with the synonym used is based on a table, view, or synonym that no longer exists. To solve this error, Replace the synonym with the name of the object it references or re-create the synonym so that it refers to a valid table, view, or synonym. Or recreate the synonym again.

Why is SQL Server not connecting?

normally means that there is no MySQL server running on the system or that you are using an incorrect Unix socket file name or TCP/IP port number when trying to connect to the server. You should also check that the TCP/IP port you are using has not been blocked by a firewall or port blocking service.

How do I resolve ORA 00913 too many values?

For example, the subquery in a WHERE or HAVING clause may return too many columns, or a VALUES or SELECT clause may return more columns than are listed in the INSERT. Action: Check the number of items in each set and change the SQL statement to make them equal.

How do I view synonyms in SQL Server?

Connect to your SQL instance, expand the database, and navigate to the Synonyms folder. Right-click on it and choose New Synonym. Enter the required details for the Synonym name, Synonym schema, Database Name, Object schema, Object Type, and name.

How do I connect to SQL Server?

Connect to a SQL Server instance Start SQL Server Management Studio. The first time you run SSMS, the Connect to Server window opens. If it doesn’t open, you can open it manually by selecting Object Explorer > Connect > Database Engine. For Server type, select Database Engine (usually the default option).