Using the IDCAMS LISTCAT command, it can be seen from this extract in Figure 104 on page 174, that the catalog retains the SMS attributes assigned at data set allocation time, and shows the space attributes that were allocated in cylinders:

CLUSTER -------

DB2D.DSNDBC.BTRANS.CHECKS.I0001.A001

IN-CAT ---

UCAT.VSBOX09

 

 

 

HISTORY

 

 

 

 

DATASET-OWNER------

HAIMO

CREATION--------

1999.048

RELEASE----------------

2

EXPIRATION------

0000.000

SMSDATA

 

 

 

 

STORAGECLASS ---

SCDBTEST

MANAGEMENTCLASS-MCDB21

DATACLASS --------

(NULL)

LBACKUP ---

0000.000.0000

ALLOCATION

 

 

 

 

SPACE-TYPE------

CYLINDER

HI-A-RBA------

1049149440

SPACE-PRI-----------

1423

HI-U-RBA---------

1474560

SPACE-SEC------------

712

 

 

 

VOLUME

 

 

 

 

VOLSER------------

RV3CU3

PHYREC-SIZE---------

4096

Figure 104. Test Case 3 - IDCAMS LISTCAT Display Extract

A.5 DB2 Table Spaces Using SMS, Coded Names

Test case 4 illustrates a table space allocation using SMS with a formal naming convention policy. The following environment applies:

There are three DB2 subsystems; DB2T, DB2D, and DB2P.

The following conditions are agreed upon by the DB2 administrator and the storage administrator for the management of DB2 data sets:

The performance, availability, management and volume location criteria of the data sets are shown in 6.1, “SMS Examples for DB2 Databases” on page 47.

The naming convention used is shown in 6.1.8, “Table Space and Index Space Names for SMS” on page 56.

The following codes are used to establish the storage class:

TSCDBTEST

MSCDBMED

FSCDBFAST

CSCDBCRIT

The following codes are used to establish the management class:

0MCDB0

1MCDB1

2MCDB2

A.5.1 Storage Class

The Storage Class routine was coded to incorporate the previously defined Storage Classes with the new naming convention. Figure 105 on page 176 shows an extract of the code used.

174Storage Management with DB2 for OS/390

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Image 196
IBM 5655-DB2 DB2 Table Spaces Using SMS, Coded Names, Scdbtest Scdbmed Scdbfast Scdbcrit, MCDB0 MCDB1 MCDB2, Storage Class

5695-DF1, 5655-DB2 specifications

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