## LOGQUEUESTATISTICS

### Definition

The system table LOGQUEUESTATISTICS specifies the number of times certain logging-related events were counted per log queue since the last start of the database instance.

### Structure

LOGQUEUESTATISTICS

QUEUEID | FIXED(5) | ID of the log queue
QUEUEMAXUSED | FIXED(5) | Number of write transactions
QUEUEINSERTCOUNT | FIXED(20) | Number of log entries inserted into the log queue
QUEUEOVERFLOWCOUNT | FIXED(10) | Number of wait situations due to log queue overflow
GROUPCOMMITCOUNT | FIXED(10) | Number of log pages whose writing was waited for by more than one transaction
WAITCOUNT | FIXED(10) | Number of COMMIT-/ROLLBACK entries
MAXWAITCOUNTPERPAGE | FIXED(10) | Maximum number of transactions that simultaneously waited for the same log page to be written
PHYSICALWRITECOUNT | FIXED(10) | Number of write operations

See also:

Evaluating System Tables, LOGQUEUESTATISTICS

Concepts of the Database System, Logging Data Changes