Console Commands › Console Commands › DISPLAY ACTIVE

DISPLAY ACTIVE

This command displays Virtual Device activity for all devices that are online.

Syntax

SVTn Display Active

Example of information displayed by the DISPLAY ACTIVE= command

SVT2 D A                                                              
SVT2X0200I Display Active Status Information 532                      
    Dynamic cache space 00064269/00033558/00006679 InUse=41%          
    Static cache lds(s) 00013320/00006160/00005920 InUse=1%           
 Dasd cache utilization 00077589/00039718/00012599 InUse=34%          
 Scratch Virtual Volumes:                                        
   Pool1=1121    Pool2=400     Pool3=301     Pool4=n/a             
   Pool5=n/a     Pool6=n/a     Pool7=n/a     Pool8=864                
     P Rmt  Volser Cua  ----Status---- Ds   Type Jobname  #I/O  Last  
     0 n/a   n/a   3510                0    349S          147   100022
     1 n/a  100030 3511   I / O        211  349S DB2PR123 3758   
     0 n/a   n/a   3512                0    349S          12    100019
     3 n/a  200102 3513  mounted       9    349S          401
     0 n/a   n/a   3514                0    349S          14    200010
     0 n/a   n/a   3515                0    349S          917       
     0 n/a   n/a   3516                0    349S          18        
     0 n/a   n/a   3517                0    349S          141      
     0 Idle        R200 Idle                                          
     0 Idle        R201 Idle                                          
     0 Idle        R202 Idle                                          
     0 Idle        R203 Idle                                          
SVT2X0100I Command Complete  

The example display documents that the SVT2 Subsystem is being converted from Static Cache Management to Dynamic Cache Management since both static and dynamic cache detail lines are displayed along with a total line. When a Subsystem is running with a single type of cache, only the total line (DASD cache utilization) is displayed.

The Subsystem has four Virtual Volume Pools defined, pools 1, 2, 3 and 8. The number of available scratch volumes available in the pools are 1121, 400, 301, and 864 respectively.

The Subsystem has eight local drives (3510-3517) and four remote client drives (R200-R203) currently online. The presence of a pool 8 definition and the remote drives indicates that this Subsystem is running with the CA Vtape P2P Option activated and will transmit certain Virtual Volumes to a remote Subsystem running in a different CA Vtape Complex.

Only two Virtual Volumes are currently mounted. VOLSER 100030 from pool 1 is mounted on device 3511. Data set number 211 is currently being written to 100030 by job DB2PR123. A total of 3758 I/O’s have been performed by this job to this Virtual Volume.

VOLSER 200102 from pool 3 is currently mounted on device 3513. Nine data sets were written to 200102 in 401 I/O’s. Since the Jobname field is blank, this VOLSER is not currently in use. The job that last used it retained it on the device instead of dismounting it. Just like a physical tape drive, when this device is needed again, the operating system will automatically dismount the retained Virtual Volume.