IBM 000-8697 Manuale Utente

System Architecture

The fifth reserved page in the root dbspace is

PAGE_1DBSP

. The sixth reserved

page,

PAGE_2DBSP

, is the second page in the pair.

The tbinit daemon uses the dbspace page to describe each dbspace and its
current status.

Below are listed the dbspace description fields and definitions. To obtain a
listing of the reserved page, execute the command tbcheck -pr.

Date/time file filled

Date and time that this log filled

Unique ID

ID number of this logical log file

Physical location

Address of this logical log file on disk

Log size

Number of pages in this logical log file

Number pages used

Number of pages used in this logical log file

Dbspace number

Dbspace number

Dbspace flags:

0x01
0x02
0x04
0x08
0x10
0x80

Dbspace is not mirrored
Dbspace includes mirror chunks
Dbspace contains a down chunk
Dbspace is newly mirrored
Dbspace is a blobspace
Blobspace has been dropped

First chunk

Number of the dbspace initial chunk

Number of chunks

Number of chunks in the dbspace

 (1 of 2)

 (2 of 2)