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Oracle Troubleshooting
ORA-12545: Connect failed because
target host or object does not exist
Symptom:
When trying to connect to Oracle the
following error is generated:
ORA-12545: Connect failed
because target host or object does not exist
Cause:
Oracle suggest that this error indicates
that the address specified (in the alias definition) is
not valid.
Possible Remedies:
Oracle suggest ensuring that the ADDRESS
parameters (in the TNSNAMES.ORA file)
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.
It could be a network
connectivity problem. Try pinging the host. This
error has been observed on a laptop when the
database was local, TCP/IP protocol used but the
network card had been removed.
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