TNS Database Error Messages TNS-12684: encryption/crypto-checksumming: Diffie-Hellman seed too small December 18, 2020 mpbod TNS-12684: encryption/crypto-checksumming: Diffie-Hellman seed too small Cause: The sqlnet.crypto_seed parameter in the SQLNET.ORA parameter file for SQL*Net is too small. Action: Add more randomly-chosen text to it, perhaps using Network Manager. Back to previous menu https://support.oracle.com/ http://www.oracle.com/ Share this:Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)