RDF System Management Manual

Maintaining the Databases
HP NonStop RDF System Management Manual—524388-003
6-3
Understanding Database States
Figure 6-3 shows synchronized databases where the application is running on
\PRIMARY and the transaction data for the three new transactions has been applied to
the backup database.
Figure 6-4 shows synchronized databases where TMF has just been shut down. The
databases are synchronized because RDF applies all audit generated on \PRIMARY to
the backup database before the subsystem reads the TMF shutdown record and
subsequently shuts down (the databases are not, however, logically identical until RDF
has actually shut down).
Figure 6-3. Synchronized Databases, No Outstanding Audit
Figure 6-4. Synchronized Databases After STOP TMF Command
MAT
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Database Database
\PRIMARY \BACKUP
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Database Database
\PRIMARY \BACKUP
T1
T2
T3
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T6
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T2
T3
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T4 T5 T6 T4 T5 T6
STOP TMF STOP TMF
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