IBM 000-8697 User Manual

Utilities

The following fields are repeated for each logical log file:

Use the -m option to display the 20 most-recent lines of the system message
log.

Output from this option lists the full pathname of the message log file and the
20 file entries. A date and time header separates each day’s entries. A
timestamp prefaces single entries within each day. The name of the message
log is specified as

MSGPATH

 in the OnLine configuration file.

Use the -o option to save a copy of the shared-memory segment to filename. If
you omit a filename in the tbstat command, the copy of shared memory is
saved to tbstat.out in the current directory by default.

address

is the address of the log file descriptor.

number

is the logical log file logid number.

flags

gives the status of each log as follows:

A
B
C
F
L
U

newly added
backed up
current logical log file
free, available for use
contains the most-recent checkpoint record
unreleased

uniqid

is the unique ID number of the log.

begin

is the beginning page of the log file.

size

is the size of the log in pages.

used

is the number of pages used.

%used

is the percent of pages used.