Oracle Error ORA-12656: Cryptographic checksum mismatch

Oracle Error Message

ORA-12656: Cryptographic checksum mismatch

Reason for the Error

The cryptographic checksum received with a packet of incoming data didn’t match the checksum computed by the receiving end. This indicates that the packet was tampered with or otherwise corrupted in transit.

Solution

Look for sources of data corruption, perhaps including deliberate tampering.