It is not possible to change the CCSID of DB2 z/OS tablespace within the ALTER dialogue. "This is a useful add"
Imagining change the CCSID of about 1000 tablespaces from CCSID 273 to CCSID 1141.
For example to do an alter like "ALTER TABLESPACE dbname.tsname CCSID 1141" for every tablespace.
This doesn't work for tablespaces which have tables with views created on it. So the extended alters have to be involved.