DCMT DISPLAY ALL STORAGE POOLS Command

DCMT DISPLAY ALL STORAGE POOLS displays information for each storage pool defined at system generation time.
DCMT DISPLAY ACTIVE STORAGE displays general information, statistics on usage, and a page allocation map for a specific storage pool.
Syntax
►►─── DCMT ─┬─────────────────────┬──────────────────────────────────────► └─
broadcast-parms
────┘ ►─── Display ACtive STorage ─┬──────────────────────────────────┬─────────►◄ ├─
storage-pool-number
────────────┤ └─ 0 ◄─────────────────────────────┘
Parameters
  • broadcast-parms
    Indicates to execute the DCMT command on all or a list of data sharing group members.
    For more information about broadcasting and
    broadcast-parms
    syntax, see the section How to Broadcast System Tasks.
  • storage-pool-number
    Specifies the storage pool.
    Storage-pool-number
    must be the number ID of a storage pool defined on the system generation STORAGE POOL, XA STORAGE POOL, or SYSTEM statements.
  • 0
    By default, if you do not specify a number, DC/UCF uses storage pool number zero.
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
Example
DCMT DISPLAY ACTIVE STORAGE
DISPLAY ACTIVE STORAGE POOL NUMBER: 0 LOCATION: 24-BIT CONTAINS TYPES: SY,ALL PAGE FIX: NO SIZE OF POOL: 3060K SIZE OF CUSHION: 152K RELOCATE THRESHOLD: 3060K 100% OF POOL CURRENT ALLOCATIONS: PAGES IN USE: 108K 4% OF POOL HIGH WATER MARKS: PAGES USED: 124K 4% OF POOL TIMES SOS: 0 GETSTG REQUESTS: 703 COMPLETED IN SCAN #1: 316 45% OF REQUESTS COMPLETED IN SCAN #2: 387 55% OF REQUESTS FREESTG REQUESTS: 680 PAGES FIXED: 0 PGFIX REQUESTS: 0 PAGES FREED: 0 PGFREE REQUESTS: 0 PAGE 001 - NEXT PAGE:
PAGES RELEASED: 0 PGRLSE REQUESTS: 0 * STORAGE POOL MAP * KEY: _=UNUSED PAGE .=FREE PAGE S=USED PAGE, NO SPACE >=USED PAGE, SPACE AVAIL ******************************************************************** 003C70 0 * SSSSSSSSSSSSSS>>>SSSSSS>>>>...._________________________________ * 00407000 * ________________________________________________________________ * 00447000 * ________________________________________________________________ * 00487000 * ________________________________________________________________ * 004C7000 * ________________________________________________________________ * 00507000 * ________________________________________________________________ * 00547000 * ________________________________________________________________ * 00587000 * ________________________________________________________________ * 005C7000 * ________________________________________________________________ * 00607000 * ________________________________________________________________ * 00647000 * ________________________________________________________________ * 00687000 * _____________________________________________________________ * ********************************************************************
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