LOGPARTITIONSTATISTICS 
The system table SYSINFO.LOGPARTITIONSTATISTICS describes the degree to which every log partition is utilized.
Structure
PARTITIONID |
FIXED(5) |
Logical identification number of the log partition |
USABLESIZE |
FIXED(20) |
Size of the log partition area available for use (KB) |
USEDSIZE |
FIXED(20) |
Size of the used log partition area (KB) |
NOTSAVEDSIZE |
FIXED(20) |
Size of log partition area not yet saved (KB) |
More Information
Concepts of the Database System, How Databases Log Data Changes