DCMT DISPLAY SHARED CACHE Command

The DCMT DISPLAY SHARED CACHE command displays the name of the files participating in a shared cache, and shows the cache status for each file. Shared cache usage is possible only in a Sysplex environment.
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The DCMT DISPLAY SHARED CACHE command displays the name of the files participating in a shared cache, and shows the cache status for each file. Shared cache usage is possible only in a Sysplex environment.
This article describes the following information:
Syntax
►►── DCMT ─┬───────────────────┬─────────────────────────────────────────────► └─
broadcast-parms
─┘ ►─── Display SHAred CAche ─┬──────────────────┬─────────────────────────────►◄ └─
cache-name
─────┘
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 2.3.4, "How to Broadcast System Tasks.
  • cache-name
    Name of the shared cache to activate or deactivate.
Usage
Display for Each Shared Cache
The following information is displayed for each shared cache:
Field
Value
Cache name
Name of the shared cache
Actual size
The size of the cache structure in K.
Reads
Number of pages read from the shared cache
Writes
Number of pages written to the shared cache
Status
Current status of the shared cache. Possible values are ON and OFF.
File
Name of the data set assigned to the shared cache
On
Name of the volume containing the data set
CF name
Name of the Coupling Facility
Max. directory count
Directory entry count. Approximate count of the number of entries supported in this structure
VectorLen
Actual Vector length. Applicable for list and cache structures
Registered pages
Number of directory entries in use
Max. element count
Approximate maximum number of elements
Data elements in use
Number of element entries in use
Example
D SHA CAC * *** Display SHAred CAche request *** Cache name: IDMSSUPPCACHE002 Status: ON Actual size (K): 32768 CF name: COUPLET1 Max. directory count: 6586 VectorLen: 832 Registered pages: 1 Reads: 2 Max. element count: 105386 Writes: 2 Data elements in use: 128 --------------------------------------------------------------------- Data set name * VolSer * BlkSz * Reg. pages MEN.C1300.TECHDC99.DBCR.BRANCH.A.R150 * TECH05 * 4000 * 0 MEN.C1300.TECHDC99.DBCR.ACCT.A.R150 * TECH09 * 2932 * 0 Vnnn ENTER NEXT TASK CODE: CA IDMS release nn.n tape volser node nodename
More Information
  • For more information about defining shared cache in the Coupling Facility, see the
    System Reference section
    .
  • For more information about defining shared cache in CA IDMS, see the information about assigning files using the DMCL file override parameter in the "Administrating CA IDMS Database" section of the CA IDMS documentation.