'm almost certain that it must be SMS.
It can be DMS. But you have to say so at CREATE DATABASE time:
$ db2 "CREATE
DB x CATALOG TABLESPACE MANAGED BY DATABASE USING ( FILE
'sys_ts' 100000 )"
DB20000I The CREATE DATABASE command completed successfully.
$ db2 list tablespaces
Tablespaces for Current Database
Tablespace ID = 0
Name = SYSCATSPACE
Type = Database managed space
Contents = Any data
State = 0x0000
Detailed explanation:
Normal
Tablespace ID = 1
Name = TEMPSPACE1
Type = System managed space
Contents = System Temporary data
State = 0x0000
Detailed explanation:
Normal
Tablespace ID = 2
Name = USERSPACE1
Type = System managed space
Contents = Any data
State = 0x0000
Detailed explanation:
Normal
--
Knut Stolze
DB2 Information Integration Development
IBM Germany