Global Lock Statistics Summary by Report Interval

This panel provides an overview of the global locking activity that was recorded during a series of report intervals.


 ________________ ZHGLS    VTM     O2       V540./C SE11 07/31/13 21:43:32   2 
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> H.A.K                                                                        
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> A-SUBSYSTEM SUPPORT      B-BIND              C-BUFFER POOL    D-GROUP BP     
> E-DISTRIBUTED DATABASE   F-EDM POOL          G-LOG MANAGER    H-OPEN/CLOSE   
> I-SQL/RID/PARALLEL/PROC  J-LOCK/CLAIM/DRAIN  *-GLOBAL LOCK    L-DB2 COMMANDS 
> O-OPTIONS                                                                    
===============================================================================
>                GLOBAL LOCK STATISTICS SUMMARY BY REPORT INTERVAL             
 HGLS                                                                          
+ Collection Interval:   1 min                           Start:  07/31 20:41   
+ Report Interval:       1 min   Combine Level:  NONE      End:  07/31 21:43   
+                                                                              
+                 Total     Total     Total      Total  Incompat       False   
+ Interval     XES Reqs  Suspends   P-Locks  Negotiate  Retained  Contention   
+ -----------  --------  --------  --------  ---------  --------  ----------   
+ 07/31 21:43        66         0         0          0         0         .0%   
+ 07/31 21:42       166         0         2         23         0         .0%   
+ 07/31 21:41       217        15        48          0         0         .0%   
+ 07/31 21:40       122         0         0          0         0         .0%   
+ 07/31 21:39       124         0         0          0         0         .0%   
+ 07/31 21:38       124         0         0          0         0         .0% 
===============================================================================

Navigation

For additional information about
  • a report interval, move the cursor to the line you want and press F11 (Zoom). Each date/time displayed reflects the end of an interval.
  • related topics, select one of the options at the top of the panel.
  • other topics, use the PF keys.

Fields

Collection Interval
The time interval specified for the collection of near-term history data. This unit of time was specified when the Near-Term History Data Collector was started.
Start
The start time of the first interval in this display.
Report Interval
This field determines the report interval. It is set on the Near-Term History Report Option panel.
Combine Level
This field reflects the selected combine level. If Combine Level is NONE, the report interval is the same as the collection interval. Possible values:
HOURLY
Data will be reported in hourly intervals.
NONE
Data will be reported in the time unit specified by the collection interval.
End
The end time of the last interval in this display.
Interval
Provides the date and time that mark the end of the report interval.
Total XES Requests
The total number of lock, change, and unlock requests that were propagated to MVS either synchronously or asynchronously.
Total Suspends
The total number of XES requests that resulted in a suspension. This includes suspends for Internal Resource Lock Manager (IRLM) global contention, XES global contention, or false contention.
Total P-Locks
The total number of lock, change, and unlock requests for P-locks.
Total Negotiate
The number of times that this DB2 member was driven to negotiate a P-lock.
Incompat Retained
The number of global lock or change requests that failed because of an incompatible retained lock. Certain P-locks can be retained because of a system failure. Another DB2 member cannot access the data that the retained P-lock is protecting unless it requests a P-lock in a compatible state.
False Contention
The rate of false contentions to real contentions.