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System Architecture 2-99
Reserved Pages
PAGE_DBSP
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
Field Name Description
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)
Field Name Description
(2 of 2)