In this post, you’ll learn more about the Oracle ErrorORA-12547: TNS:lost contact with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-12547: TNS:lost contact
Reason for the Error ORA-12547: TNS:lost contact
Partner has unexpectedly gone away, usually during process startup.
How to fix the Error ORA-12547: TNS:lost contact ?
You can fix this error in Oracle by following the below steps
Investigate partner application for abnormal termination. On an Interchange, this can happen if the machine is overloaded.