ORA-12545: Connect failed because target host or object does not exist
ORA-12547: TNS: lost contact
ORA-12520: TNS:listener could not find available handler for requested type of server
ORA-19506 ORA-27028 ORA-19511 VxBSACreateObject: Failed with error Server Status: Communication with the server has not been initiated
ORA-02049: timeout: distributed transaction waiting for lock
ORA-12154: TNS: could not resolve the connect identifier specified
ORA-24330: internal OCI error
ORA-03106: fatal two-task communication protocol error
| connectivity jdbc oracle database |
| Oracle network error solution |
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