ORA-12545: Connect failed because target host or object does
not exist
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Answer / guest
Cause: The address specified is not valid, or the program
being connected to 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.
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