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 LOCKLISTSTATISTICS 

The statistics system table LOCKLISTSTATISTICS contains information about the used space in the lock list.

LOCKLISTSTATISTICS

DESCRIPTION

CHAR(40)

Description (see table Column DESCRIPTION) of how to interpret the content of the VALUE column

VALUE

CHAR(12)

Value

Column DESCRIPTION

Value

Explanation

MAX LOCKS

VALUE contains the number of available locks in the lock list

TRANS LIST REGIONS

VALUE contains the number of semaphores for transactions

TABLE LIST REGIONS

VALUE contains the number of semaphores for tables

ROW LIST REGIONS

VALUE contains the number of semaphores for rows

ENTRIES

VALUE contains an internal database measure (entries) for the size of the lock list

USED ENTRIES

VALUE contains the number of currently used entries for set and requested locks

USED ENTRIES (%)

VALUE contains the number of currently used entries for set and requested locks (as a percentage)

AVG USED ENTRIES

VALUE contains the average number of entries for set and requested locks

AVG USED ENTRIES (%)

VALUE contains the average number of entries for set and requested locks (as a percentage)

MAX USED ENTRIES

VALUE contains the maximum number of entries for set and requested locks

MAX USED ENTRIES(%)

VALUE contains the maximum number of entries for set and requested locks (as a percentage)

LOCK ESCALATION VALUE

VALUE contains the number of table rows from which point row locks are converted into a table lock (lock escalation)

LOCK ESCALATIONS

VALUE contains the number of lock escalations

LOCK COLLISIONS

VALUE contains the number of lock requests that could not be granted (immediately)

DEADLOCKS

VALUE contains the number of situations where at least two transactions collided with each other due to held and requested locks in such a way that this collision can be resolved only by implicitly ending a transaction

SQL REQUEST TIMEOUTS

VALUE contains the number of lock requests that could not be set because they exceeded the maximum waiting time

TRANSACTIONS HOLDING LOCKS

VALUE contains the number of transactions that have locks assigned to them

TRANSACTIONS REQUESTING LOCKS

VALUE contains the number of transactions that request locks

CHECKPOINT WANTED

If the VALUE column contains the value TRUE, the lock list is closed. This means that a transaction that does not yet have an exclusive lock cannot be assigned an exclusive lock because a checkpoint has been requested.

SHUTDOWN WANTED

If the VALUE column contains the value TRUE, the lock list is closed because a shutdown has been requested.

 

 

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