IBM 000-8697 User Manual

IBM Informix OnLine Database Server Administrator’s Guide

Each blobpage that was allocated during the time that this log file was
current is copied to the tape device

LTAPEDEV

. This is required as part of

blobspace logging to ensure that blobspace blobs can be restored after a

DELETE

statement, if required. (Refer to

for a detailed explanation

of blobspace logging.)

After all blobspace free-map pages have been checked and the required
blobpages have been copied to tape, tbtape writes a log header page to the
device.

The log header page is distinct from the tape header page. The log header
page specifies the identification number of the logical log file and the number
of pages from the logical log file that need to be copied.