2506335 - DBUA error "0712-001 Symbol CreateIoCompletionPort was referenced from module" when upgrade from 11g to 12c

Perform database upgrade from 11g to 12c.

When running the DBUA, encounter the following error:

...

UnsatisfiedLinkError exception loading native library: njni12

java.lang.UnsatisfiedLinkError: njni12 (rtld: 0712-001 Symbol CreateIoCompletionPort was referenced

      from module /oracle/<SID>/12102/lib/libnjni12.so(), but a runtime definition

            of the symbol was not found.

rtld: 0712-001 Symbol GetMultipleCompletionStatus was referenced

      from module /oracle/<SID>/12102/lib/libnjni12.so(), but a runtime definition

            of the symbol was not found.

rtld: 0712-002 fatal error: exiting.)

Exception in thread "main" java.lang.UnsatisfiedLinkError: oracle/net/common/NetGetEnv.get(Ljava/lang/String;)Ljava/lang/String;

Oracle Database 12.1.0.2

IBM AIX on POWER Systems (64-bit)

Upgrade DBUACreateIoCompletionPortrtld: 0712-001 , KBA , BC-DB-ORA , Oracle , Problem