Address Space Summary

Use the Address Space Summary panel to view information about the size and usage of the DBM1 and DIST address spaces.

Figure 1. Address Space Summary panel (ZJ225)

 ________________ ZJ225    VTM     O2       V540.#P DC11 MM/DD/YY HH:MM:SS   2 
>       Help PF1         Back PF3             Up PF7            Down PF8       
> R.M.A                                                                        
>                                                                              
> *-Address Space Summary B-Thread Information C-Shared and Common Storage     
> D-Stmt Cache and xProc  E-Pool Detail        F-IRLM Storage                  
===============================================================================
>                   Address Space Summary                                      
 J22A                                                                          
+      Address Space Name                                       DBM1      DIST 
+                                                                              
+      Average Thread Footprint (MB)                            0.22       N/A 
+      Maximum Number of Thread                                 4517       N/A 
+      Castout Buffer Storage (MB)                                 0       N/A 
+                                                                              
+      24-Bit Low Private                                     172032    253952 
+      24-Bit High Private                                    483328    274432 
+      High Address 24-Bit Private Region                   00030000  00044000 
+      31-Bit Extended Low Private                          86728704   8060928 
+      31-Bit Extended High Private                         33611776  13905920 
+      High Address 31-bit Private Region                   26400000  218B0000 
+      Extended Region Size                                 1555456K  1555456K 
+                                                                              
+      31-Bit Storage Reserved for Must-Complete Operation   155545K   155545K 
+      31-Bit Storage Reserved for Z/OS Use                    40960     40960 
+      Storage Cushion Warning to Contract                   155545K   155545K 
+      Storage Cushion (MB)                                      303       N/A 
+                                                                              
+      Total 31-Bit Getmained Stack                          8515584   1523712 
+      Total 31-Bit Stack In Use                             7024640   1130496 
+      Total 31-Bit Variable Pool Storage                    2846720    360448 
+      Total 31-Bit Fixed Pool Storage                        118784     86016 
+      Total 31-Bit Getmained Storage                         267272     12634 
+      Total 31-Bit Storage (MB)                                  11       N/A 
+      Amount of Available 31-Bit Storage                   1437932K  1534000K 
+      Total 31-Bit Storage Inuse Percentage                    10.8       2.4
+      Db2 31-Bit Storage Inuse Percentage                        .0       N/A 
+                                                                              
+      Total 64-Bit Private Variable Pool Storage            201736K    167936 
+      Total 64-Bit Private Fixed Pool Storage              10891264    110592 
+      Total 64-Bit Private Getmained Storage                109636K         0 
+      Total 64-Bit Private Storage for Storage              2449408   1400832 
+                                                                              
+      Real 4K Frames In Use                                   76432      1061 
+      Real 4K Frames In Use (64-Bit)                          64911        86 
+        Real 4K Frames In Use(64-Bit Private)                 46552        83 
+      HWM of Real 4K Frames                                   77031       383 
+      4K Auxiliary Slots In Use                               74089      2066 
+      4K Auxiliary Frames In Use(64-Bit)                      59518       372 
+        4K Auxiliary Frames In Use(64-Bit Private)            34409       341 
+      HWM of 4K Auxiliary Frames                              59518       372 
+                                                                              
+      Real 2G Frames In Use (64-Bit)                              0         0 
===============================================================================

Fields

Address Space Name
The address space names, DBM1 (database service) and DIST (distributed data facility).
Db2 field
QW0225AN
Average Thread Footprint (MB)
The average size of all threads in the address space.
Maximum Number of Thread
The maximum number of threads in the address space.
Castout Buffer Storage (MB)
The size of the castout buffer.
24-Bit Low Private
The amount of private z/OS® storage below the 16 MB line. This storage is obtained from bottom upward, usually for unauthorized programs.
Db2 field
QW0225LO
24-Bit High Private
The amount of private z/OS storage below the 16 MB line. This storage is obtained from top downward, usually for authorized programs.
Db2 field
QW0225HI
High Address 24-Bit Private Region
The current high address of the 24-bit private region.
Db2 field
QW0225TP
31-Bit Extended Low Private
The amount of private z/OS storage above the 16 MB line. This storage is obtained from bottom upward, usually for unauthorized programs.
Db2 field
QW0225EL
31-Bit Extended High Private
The amount of private z/OS storage above the 16 MB line. This storage is obtained from top downward, usually for authorized programs.
Db2 field
QW0225EH
High Address 31-bit Private Region
The current high address of 31-bit private region.
Db2 field
QW0225EP
Extended Region Size
The size of the z/OS extended region.
Db2 field
QW0225TP
31-Bit Storage Reserved for Must-Complete Operation
The size of the 31-bit storage reserved for operations that must be completed.
Db2 field
QW0225CR
31-Bit Storage Reserved for z/OS Use
The size of the 31-bit storage reserved for z/OS.
Db2 field
QW0225MV
Storage Cushion Warning to Contract
The storage cushion warning to contract.
Db2 field
QW0225SO
Storage Cushion
The storage cushion.
Calculation
QW0225SO + QW0225CR + QW0225MV
Total 31-Bit Getmained Stack
The getmained stack storage.
Db2 field
QW0225GS
Total 31-Bit Stack In Use
The total size of the 31-bit stack in use.
Db2 field
QW0225SU
Total 31-Bit Variable Pool Storage
The variable storage below the 31-bit bar.
Db2 field
QW0225VR
Total 31-Bit Fixed Pool Storage
The fixed storage below the 31-bit bar.
Db2 field
QW0225FX
Total 31-Bit Getmained Storage
The getmained storage below the 31-bit bar.
Db2 field
QW0225GM
Total 31-Bit Storage (MB)
The total size of the 31-bit storage.
Amount of Available 31-Bit Storage
The amount of available 31-bit storage.
Db2 field
QW0225AV
Total 31-Bit Storage Inuse Percentage
The total 31-bit storage inuse percentage.
Calculation
(QW0225RG - QW0225AV) / QW0225RG
Db2 31-Bit Storage Inuse Percentage
The Db2 31-bit storage inuse percentage.
Calculation
(QW0225GM + QW0225VR + QW0225FX + QW0225GS) / QW0225RG
Total 64-Bit Private Variable Pool Storage
The total size of the 64-bit private variable pool storage.
Db2 field
QW0225VA
Total 64-Bit Private Fixed Pool Storage
The total size of the 64-bit private fixed pool storage.
Db2 field
QW0225FA
Total 64-Bit Private Getmained Storage
The total size of the 64-bit private getmained storage.
Db2 field
QW0225GA
Total 64-Bit Private Storage for Storage
The total size of the 64-bit private storage allocated for storage manager control structures.
Db2 field
QW0225SM
Real 4K Frames In Use
The number of real 4K frames in use for 31-bit and 64-bit private pools.
Db2 field
QW0225RL
Real 4K Frames In Use (64-Bit)
The number of real 4K frames in use for 64-bit private pools.
Db2 field
QW0225HVPagesInReal
Requires
z/OS version 1.11 and later
Real 4K Frames In Use (64-Bit Private)
The number of real 4K frames in use for 64-bit private storage. This field is a subset of Real 4K Frames In Use (64-Bit) (QW0225HVPagesInReal) and does not include buffer pool storage.
Db2 field
QW0225PriStg_Real
Requires
z/OS version 1.10 and later
HWM of Real 4K Frames
The high-water mark for the number of real 4K frames in use for 64-bit private pools.
Db2 field
QW0225HVGPagesInReal
Requires
z/OS version 1.11 and later
4K Auxiliary Slots In Use
The number of 4K auxiliary slots in use for 31-bit and 64-bit private pools.
Db2 field
QW0225AX
4K Auxiliary Frames In Use (64-Bit)
The number of 4K auxiliary frames in use for 64-bit private pools.
Requires
z/OS version 1.11 and later
4K Auxiliary Frames In Use (64-Bit Private)
The number of 4K auxiliary slots in use for 64-bit private storage (does not include buffer pool storage, only includes auxiliary slots occupied by pages that are paged out).
Db2 field
QW0225PriStg_Aux
Requires
z/OS version 1.10 and later
HWM of 4K Auxiliary Frames
The high-water mark for the number of 4K auxiliary frames in use.
Real 2G Frames in Use (64-bit)
The number of real 2G frames in use for 64-bit private.
Db2 field
QW0225HVPagesInReal2G
Requires
z/OS version 1.11 and later
Db2 12 and later