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Encryption Settings in sqlnet.ora Cause ORA-12537

edited Mar 7, 2019 11:06AM in Database Security Products (MOSC) 6 commentsAnswered ✓

Hello and thank you for reviewing this question,

I've seen many similar questions on this board and other sources, but none of these have led me to a solution.

Question:

How do I properly configure sqlnet.ora to enforce encryption?

Background:

  1. I've created a WALLET, imported a self-signed cert, and verified that it is indeed there.
  2. I run sqlplus on the database server: sqlplus <user>/<sid> with success.
  3. I enable encryption settings while still being permissive:
    • SQLNET.CRYPTO_CHECKSUM_SERVER=requested
    • SQLNET.ENCRYPTION_SERVER=requested
  4. My sqlplus connection fails with: ORA-12537: TNS:connection closed
  5. I explicitly set the defaults for the encryption settings:

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