DSNT312I   object name MUST BE STARTED RW. NO ACTION TAKEN.

Explanation

The ACCESS keyword is either RO or UT, and the object must be started ACCESS (RW).

In the message, 'object' is either:
  • TABLESPACE(S) IN if the START DB(name) SPACENAM(...) is specified, or
  • DATABASE if the START DB(name) is specified.