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IRLM Resource Lock List view (ILKRSLST)


The IRLM Resource Lock List view (ILKRSLST) shows all waiters for and holders of any database resource.

With the ILKRSLST view, you can see:

  • Every resource lock held by any participant in an N-way data sharing group
  • Every resource lock waited for by any participant
  • How long a region has been waiting for a lock
  • How long a region has been holding a lock

You can enter ILKRSLST on the COMMAND line to view a list of all resources contended for and their respective holders and waiters. If you are interested in a specific resource, you can hyperlink from the Wait Time field to see only waiters and holders for the specific resource.

You can hyperlink to the ILKRSLST view from the following views to see the waiters and holders for a selected resource only:

  • Wait Time field in the ILKRGLST, ILKRGWT, and ILKRSWT views
  • Num Held field in the ILKRGSUM view
26MAR2009  16:26:17 ------ MAINVIEW WINDOW INTERFACE (V6.0.00) ----------------
COMMAND  ===>                                                 SCROLL ===> PAGE
CURR WIN ===> 1        ALT WIN ===>                                            
>M1 =ILKRSLST==========I10X=====*========26MAR2009==16:26:17====MVIMS====D====0
-                             IRLM Resource Lock List                       
  Related Views                                                             
  . Regions in IRLM Wait     . Holding Regions         . IRLM Statistics    
  . Resource Contention      . Database Contention                           
                                                                             
CMD Database DBC/Area RBA/Type F G Cur Wait Hold Rgn IMS  Rgn      Rgn Rgn     
--- Name     -------- -------- - - Sta Time Time ID  ID   Jobname  Typ Status  
    CUSTHDAM 1        00000D38 P G UPD  2.2        5 X19H IM81BMP1 BMP WT-IRLM
    CUSTHDAM 1        000006A6 P G UPD       2.2   5 X19H IM81BMP1 BMP WT-IRLM
    CUSTHDAM 1        00000D38 P G UPD      47.6   4 X19H IM81BMP2 BMP ACTV-USR
    CUSTHDAM 1        DATASET  B G RO       87.6 SYS X19H DLI -TCB SYS         
                      COMMAND  B G RO       180  SYS X19H DLI -TCB SYS         
                      COMMAND  F G RO       180  SYS X19H DLI -TCB SYS

The following hyperlinks are provided on the view:

Hyperlink from

To access

Database Name

Database I/O Activity for Physical Databases (IMS Systems) view (IDAPSUMR), where you can access database I/O activity information at the level of the physical database

Wait Time

Another version of the IRLM Resource Lock List view (ILKRSLST), where you can see all waiters and holders for a given resource

Hold Time

IRLM Region Lock List view (ILKRGLST), where you can see all the resources held or waited for by a selected region

This information is especially helpful for analyzing lock problems where a region holding requested resources is itself waiting for another resource.

Rgn Jobname

Region/Thread Activity Detail view (DRGNDTLR) for DBT or ODB region types or Region Activity Detail view (IRGNDTLR) for all other region types

DRGNDTLR and IRGNDTLR show what processing the region or thread has completed up until now.

Related topic

 

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