DMS Container Space Full

This usually means free pages = 0 .

Check the db2diag.log file  , and the related message is

         ADM6044E  The DMS table space “MYDATA” (ID “3”) is full.  If this is

          an autoresize or automatic storage DMS tablespace, the maximum table

          space size may have been reached or the existing containers or

          storage paths cannot grow any more. Additional space can be added to

          the table space by either adding new containers or extending existing

          ones using the ALTER TABLESPACE SQL statement. If this is an

          autoresize or automatic storage DMS table space, additional space can

          be added by adding containers to an autoresize table space or by

          adding new storage paths to an automatic storage database.

As immediate troubleshooting steps try:

DB2 CONNECT TO my_database_name
DB2 LIST TABLESPACES SHOW DETAIL
DB2 "ALTER TABLESPACE tablespace_name EXTEND (ALL 100000)"

Long term , analyse the space requirements and size the tablespaces with some capacity planning