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EM 12c: Using Enterprise Manager 12c Cloud Control to Monitor 11g Databases with AES256 Encryption Generates TNS-12599 Errors in Target Alert Logs (Doc ID 1520496.1)

Last updated on NOVEMBER 17, 2017

Applies to:

Enterprise Manager for Oracle Database - Version 12.1.0.1.0 to 12.1.0.2.0 [Release 12.1]
Enterprise Manager Base Platform - Version 12.1.0.1.0 to 12.1.0.2.0 [Release 12.1]
Information in this document applies to any platform.

Symptoms

After installing EM12c and having it monitor 11g database targets with AES256 encryption, the following errors are shown in the alert logs:


NI cryptographic checksum mismatch error: 12599.

  VERSION INFORMATION:
        TNS for Linux: Version 11.2.0.2.0 - Production
        Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.2.0 -
Production
        TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.2.0 - Production
  Time: <Date time stamp>
  Tracing not turned on.
  Tns error struct:
    ns main err code: 12599

TNS-12599: TNS:cryptographic checksum mismatch
    ns secondary err code: 2526
    nt main err code: 0
    nt secondary err code: 0
    nt OS err code: 0


Cause

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