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 188.8.131.52.0 to 184.108.40.206.0 [Release 12.1]
Enterprise Manager Base Platform - Version 220.127.116.11.0 to 18.104.22.168.0 [Release 12.1]
Information in this document applies to any platform.
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.
TNS for Linux: Version 22.214.171.124.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 126.96.36.199.0 -
TCP/IP NT Protocol Adapter for Linux: Version 188.8.131.52.0 - 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
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