This is a key DBA job and involves mapping of logical database design to
physical storage. All of the tuning we have done until now would be useless if you
have not mapped the storage properly.
There are two types of table spaces in DB2 UDB, system managed space (SMS)
and database managed space (DMS). In SMS, the operating system is
responsible for allocating and managing storage space allocated to the
database. The table spaces grow over time as the data is being inserted into the
database. In DMS, the database is responsible for allocating storage space and
managing it.
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