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Use

<rw_lock_name>: collision rate <percentage>%, <number_of> collisions, <number_of> accesses at address <rw_lock_id>

<number_of> tasks are waiting for RW lock '<rw_lock_name>' owned by task <task_id>

Explanation

User Response

  

More Information


 

Relevant  DB-Analyzer Files
Helpful with ...
DBAN_REGIONS.csv Information about accesses to critical sections 
DBAN_RW_LOCKS.csv  

 

SAP Note
Helpful with ...
 1681336 - SAP MaxDB: Synchronization objectsFind more information about the use of reader/writer locks. 

 

Expert Sessions (Link to trainings)
Content / Helpful with ...
Session 27: SAP MaxDB Multi Tasking Description of "cooperative" multi-tasking and how tasks interact 

 

Documentation (links)
Helpful with ...
  

 
liveCache:

If you get collision warnings within a liveCache environment for a special APPLICATION AREA find more about the affected number:

Example:
* W3  APPLICATION AREA 1000015: collision rate 5644.72%, 223659673 collisions, 3962281 accesses at address 0x25c0eab838


enum CbsRwLockAreaId
{
    CbsRwLockLckProject        = 1
  , CbsRwLockRepProject        = 2
  , CbsRwLockMultiArrays       = 3
  , CbsRwLockTracer            = 4
  , CbsRwLockRFID              = 5
  , CbsRwLockOneDBReset        = 6
  , CbsRwLockAnchor            = 7
  , CbsRwLockTREX              = 8
  , CbsRwLockContainerCreation = 9
  , CbsRwLockSessionInit       = 10
  , CbsRwLockSessionGlobalData = 11
  , CbsRwLockVersionInfo       = 12
  , CbsRwLockPVCEnvKeeper      = 13
  , CbsRwLockPVCEnvExist       = 14
  , CbsRwLockPVCEnvInternal    = 15
  , CbsRwLockCreateGuid        = 16
  , CbsRwLockSimConsole        = 17
  , CbsRwLockTrg               = 18
  , CbsRwLockTrgRndNumGen      = 19
};                             

 

 

 

 

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