Utilities 7-53
Log-Record Read Filters
-d Option
Ifyou do not use the -d option, tblog reads the logical log files stored on disk,
starting with the logical log file with the lowest logid number. Thetblog
utilityuses the pathnames stored in the root dbspace reserved pages to locate
thelogical log files. If OnLine is in offline mode when you execute tblog, only
thefiles on disk are read. If OnLine is in quiescent or online mode, tblog also
reads the logical log records stored in the logical log buffers in shared
memory (after all records on disk have been read).
Whenyou read the current logical log on disk, read and write access is denied
to all other user processes. For this reason, Informix recommends that you
waitto read the contents of the logical log files until after the files have been
backed up and then read the files from tape.
-n Option
If you do not use the -n option,tblog reads all logical log files available
(either on disk or on tape).