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4-20 IBM Informix OnLine Database Server Administrator’s Guide
Dbspace Logging
Figure 4-1
OnLine logs
dbspace
operations in six
steps.
OnLine disk
1
2
4
3
3
5
6
Data page
Logical log file
Physical log
Row data
Pipe
Database server process
Logical log
buffer
Physical log buffer
Page
buffer
OnLine shared memory
Privatedataportion
of server’s virtual
address space
Application Process
OnLine disk