Storage summary panel

The Storage Summary panel, that is displayed in the following figure provides an overview of storage utilization.

Move your cursor to a DSA Summary, GDSA Summary or EDSA Summary title line and press PF11 to display a detailed breakdown of that DSA.

Figure 1. Storage Summary Panel (S.)

 ________________ ZSTOR    VTM     CICSSP31 V530./C SP22 11/23/13 15:51:03
> PF1 Help     PF3 Back     PF4 Main Menu     PF7 Up     PF8 Down    PF11 Zoom

> A-Summary  B-Violations  C-Task Storage    D-DSA             E-EDSA
> F-PAM DSA  G-PAM EDSA    H-Subpool Groups  I-Region Storage  J-GDSA
===============================================================================

>                               STORAGE SUMMARY
 STOR
+                             Storage Information
+      DSA limit . . . . . . . :    5120K    EDSA limit  . . . . . . :   10240K
+      DSA storage allocated . :    1280K    EDSA storage allocated  :    6144K
+      DSA storage in use  . . :    1024K    EDSA storage in use . . :    5120K
+      DSA area currently SOS  :       No    EDSA are currently SOS  :       No
+      Total storage violations:        0    Storage recovery option :       No
+      Storage protection  . . :       No    Transaction isolation . :       No
+      Total storage notifies  :        0    Statistics last reset . :  0:00:01
+      Current free OSCOR  . . :    1597K    Largest free OSCOR  . . :    1516K
+      GDSA limit............. :  163833P    GDSA storage assigned...:        0
+      GDSA sotrage allocated. :    1024K    GDSA storage in use ....:        0
+      GDSA MEMLIMIT value.....:   16383P    GDSA MEMLIMIT source....:   REGION
+      GDSA area currently SOS.:       NO

+                             User Key DSA Summary
+      DSA size  . . . . . . . :     256K    Cushion size  . . . . . :      64K
+      Current free space  . . :     256K    Largest free area . . . :     256K
+      Extents allocated . . . :        1    Extents in use  . . . . :        0
+      Current tasks suspended :        0    Total tasks suspended . :        0
+      Currently SOS . . . . . :       No    Total times SOS . . . . :        0
+      Max size................:    4096K    DSA % used..............:        0

+                              CICS Key DSA Summary
+      DSA size  . . . . . . . :     512K    Cushion size  . . . . . :      64K
+      Current free space  . . :     204K    Largest free area . . . :     192K
+      Extents allocated . . . :        2    Extents in use  . . . . :        2
+      Current tasks suspended :        0    Total tasks suspended . :        0
+      Currently SOS . . . . . :       No    Total times SOS . . . . :        0
+      Max size................:    4608K    DSA % used..............:        8
+
+                              Shared DSA Summary
+      DSA size  . . . . . . . :     256K    Cushion size  . . . . . :      64K
+      Current free space  . . :     252K    Largest free area . . . :     256K
+      Extents allocated . . . :        1    Extents in use  . . . . :        1
+      Current tasks suspended :        0    Total tasks suspended . :        0
+      Currently SOS . . . . . :       No    Total times SOS . . . . :        0
+
+                              Read Only DSA Summary
+      DSA size  . . . . . . . :     256K    Cushion size  . . . . . :      64K
+      Current free space  . . :      72K    Largest free area . . . :      72K
+      Extents allocated . . . :        1    Extents in use  . . . . :        1
+
===============================================================================

This panel shows the following fields:

DSA limit: The total amount of storage the DSA’s below the 16M line are allowed to allocate. This value is specified in the SIT or can be overridden via the CEMT transaction.
EDSA limit: The total amount of storage the DSA’s above the 16M line are allowed to allocate. This value is specified in the SIT or can be overridden via the CEMT transaction.
DSA storage allocated: The current total storage allocated by the DSA’s below the 16M line.
EDSA storage allocated: The current total storage allocated by the DSA’s above the 16M line.
DSA storage in use: The current storage allocated by DSA extents below the 16M line which have at least one page in use.
EDSA storage in use: The current storage allocated by DSA extents above the 16M line which have at least one page in use.
DSA area currently SOS: Whether any of the DSA’s below the 16M line are currently short on storage.
EDSA area currently SOS: Whether any of the DSA’s above the 16M line are currently short on storage.
Total storage violations: Count of storage violations detected by CICS®. Each violation constitutes an instance of a CICS application writing into storage that it doesn’t own. While CICS can usually recover from these errors, the recovery process is time consuming and degrades application response time. To find out which transactions encountered storage violations, select the Violations option (B) on the Storage path (fast path S.B). Note that the count for this field is reset every time CICS resets the system statistics.
Storage recovery option: Whether CICS attempts to recover from storage violations. This option is set in the CICS System Initialization Table (SIT).
Storage protection: Whether CICS attempts to protect CICS internal storage against corruption from user applications.
Transaction isolation: Whether CICS attempts to protect storage against corruption from other CICS user tasks.
Total storage notifies: How many times the Storage Manager domain has notified other domains that the DSA is approaching a short-on-storage (SOS) condition. The closer CICS approaches SOS, the more frequently this count increases.
Statistics last reset: Time of day when CICS storage statistics were last reset.
Current free OSCOR: Total amount of storage available in the CICS private area to handle MVS getmain requests. Since this amount consists of the sum total of available fragments, a Getmain request for storage less than this amount may not succeed.
Largest free OSCOR: Size of the largest contiguous area available in the CICS private area to handle MVS Getmain requests.
GDSA limit: The dynamic storage limit.
GDSA storage assigned: The dynamic storage that was assigned above the 2GB boundary (above the bar).
GDSA storage allocated: The dynamic storage that was allocated above the 2GB boundary (above the bar).
GDSA storage in use: The dynamic storage that is currently in use.
CICS MEMLIMIT value: The limit for above-the-bar storage is controlled by the MEMLIMIT value assigned to the address space by the operating system.
CICS MEMLIMIT source: The source of the MEMLIMIT value that was assigned to the address space by the operating system. For example, REGION.
GDSA area currently SOS: Whether the dynamic storage area has a short-on-storage condition. For example, YES or NO.
DSA size: Value specified in the SIT specifies the upper limit of the total amount of storage within which CICS can allocate the individual dynamic storage areas (DSAs) that reside below the 16 MB boundary.
Cushion size: Amount of storage in the DSA that is set aside to satisfy a storage request when the DSA is almost completely utilized. If CICS uses storage from the cushion, it indicates an short-on-storage condition.
Current free space: Amount of currently unused storage in the DSA.
Largest free area: Largest amount of currently unused contiguous storage in the DSA.
Extents allocated: The number of extents currently allocated in this DSA.
Extents in use: The number of extents in this DSA which have at least one page in allocated.
Current tasks suspended: The current number of tasks suspended due to insufficient storage.
Total tasks suspended: Total number of tasks suspended due to insufficient storage since last statistics reset or startup.
Currently SOS: Whether CICS is short-on-storage.
Total times SOS: Number of times CICS went short-on-storage.