In this chapter, details of some of the
advanced Streams configuration details involving the Down
Streams capture process were presented.
The main points of downstream data capture
include:
-
The Down Streams Capture methodology allows
the use of a secondary database as the site of the Capture
process.
-
Once the logs are moved to the Down Streams
Capture process, the scanning and constructing of LCR events is
done at this secondary database.
-
Enqueuing occurs at the secondary
database. This method effectively moves the Capture process to
another database.
-
There are two methods of Down Streams
capture: Implicit Log assignment capture and Explicit Log
assignment capture. The Implicit method depends on the automatic
feed of logs with help of log transport services. The Explicit
method depends on manual SQL commands to assign the logs.
In the next chapter, information on the
Streams configuration in a Real Application Cluster environment
will be presented.
