Thanks for your reply!
After that,It seems that SYBASE ASE 15.7(Backup Server) On AIX can only support 32-bit TSM-API.
But the TSM 6.3 version have no any 32-bit CLIENT API on AIX 7.1.
So TSM on AIX 7.1 can not support sybase backup.
I don't understand why not sybase（ASE）update the Backup Server from 32-bit to 64-bit on AIX platform....