In IBM Redbook "DB2 9 for z/OS: Distributed Functions" in section 2.3 I
read that we can replace DB2 Connect servers for connection to DB2 on
z/OS with DB2 Data Server Clients V9.5 fixpack 3 or newer one. I tried
to make this connection on my Data Server client to connect directly to
host but I got message:
SQL8002N An attempt to connect to a host failed due to a missing DB2
Connect product or invalid license.
I tried to add Connect license through License Center on my client but
I don't know how.
Can someone tell me how can it be done and is this better solution then
have installed DB2 Connect?
Thanks

You are probably missing the license jar file db2jcc_license_cu.jar

I checked for db2jcc_license_cu.jar file and I found it in SQLLIB\java folder.
I also added db2jcc_license_cisuz.jar in same folder (I think DB2 uses this file for JDBC connection to z/OS)
but the result is the same error message.

I managed to add license for DB2 Connect not through License Center but using command:

db2licm -a C:\Progs\SQLLIB\license\db2consv_zs.lic

and after that I can connect to DB2 on z/OS directly from my Data Server Client V9.5.
Has someone experience in replacing DB2 Connect with Data Server Client (or driver)? Is this better way to connect to z/OS than going through DB2 Connect?