IBM 000-8697 Manual Do Utilizador

IBM Informix OnLine Database Server Administrator’s Guide

Below are listed the checkpoint and logical log file tracking fields and defini-
tions. To obtain a listing of the reserved page, execute the command
tbcheck -pr

.

Timestamp of checkpoint

Timestamp of the last checkpoint,
displayed as decimal value

Checkpoint time

Time the last checkpoint occurred

Physical log begin address

Beginning address of the physical log

Physical log size

Number of pages in the physical log

Physical log position, Ckpt

Physical location for the start of the next set
of “before-images”

Logical log unique ID

ID number of the logical log file storing the
most-recent checkpoint record

Logical log position, Ckpt

Physical location of this checkpoint record
in the logical log file

Dbspace descriptor page

Address of the current dbspace reserved
page

Primary chunk descriptor page

Address of the current primary chunk
reserved page

Mirror chunk descriptor page

Address of the current mirror chunk
reserved page

Log file number

Number of this logical log file

Logical log file flags:

0x01
0x02
0x04
0x08
0x10

Log file in use
Log file is the current log
Log file has been backed up
Log file is newly added
Log file has been written to archive tape

Timestamp

Timestamp when log filled (decimal)

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