DCMT DISPLAY ACTIVE STORAGE Command Usage

General Storage Pool Information

The following general information about the storage pool is provided:

Field	Value
Pool Number	Storage pool number
Location	Location (24-bit or 31-bit)
Containing Types	One or more of the following types of storage, contained in the storage pool: AL—all DB—database SH—shared SK—shared-kept SY—system TR—terminal UK—user-kept US—user-shared
Page Fix	If page fixing is in effect: YES or NO
Size of Pool	Size of the storage pool, in K bytes
Size of Cushion	Size of the storage cushion, in K bytes

Storage Pool Statistics and Usage

The following statistics on storage pool usage are provided:

Field	Value
Relocate Threshold	The amount of the pool which must be in use before resource relocation begins
Current Allocations	Current allocations of the storage pool
Pages in User	Pages in use, expressed in K bytes and as a percentage of the storage pool
High Water Marks	High-water marks
Pages Used	Pages in use, expressed in K bytes and as a percentage of the storage pool
Times SOS	Number of times a short-on-storage (SOS) condition occurred
Getstg Requests	Total number of #GETSTG requests
Completed in Scan #1	Number and percentage of #GETSTG requests satisfied in the first scan of the storage pool
Completed in Scan #2	Number and percentage of #GETSTG requests satisfied in the second scan of the storage pool
Freestg Requests	Number of #FREESTG requests
Pages Fixed	Number of pages fixed in the pool
Pgfix Requests	Number of PGFIX requests
Pages Freed	Number of fixed pages freed
Pgfree Requests	Number of PGFREE requests
Pages Released	Number of pages released (that is, the number of 4K pages that became eligible for release by the operating system)
Pgrlse Requests	Number of PGRLSE requests (that is, the number of times operating system services were invoked to actually release one or more pages)

Storage Pool Allocation Map

The storage allocation map shows the following information:

Field	Value
_	Which pages are unused
.	Which pages are free
S	Which pages are in use with no space available
>	Which pages are in use with space available

More Information

For more information about displaying information about all storage pools, see DCMT DISPLAY ALL STORAGE POOLS.
For more information about changing storage pool attributes at runtime, see DCMT VARY STORAGE.
For more information about dynamically adding or increasing XA storage pools, see DCMT VARY SYSGEN.
For more information about defining storage pools, see documentation of the STORAGE POOL and XA STORAGE POOL statements in the System Generation Guide.
For more information about storage pools generally, see the System Generation Guide.
For more information about performance considerations, see the System Operations Guide.
For more information about storage management, see the Navigational DML Programming Guide.