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This chapter introduces you to XStream, a new feature in Oracle Database 11g Release 2 (11.2). XStream enables information sharing with outstanding performance and usability.
This chapter contains the following topics:
Dmv StreamingAbout XStream
XStream consists of Oracle Database components and application programming interfaces (APIs) that enable client applications to receive data changes from an Oracle database and send data changes to an Oracle database. These data changes can be shared between Oracle databases and other systems. The other systems include non-Oracle databases, non-RDBMS Oracle products, file systems, third party software applications, and so on. A client application is designed by the user for specific purposes and use cases.
XStream consists of two major features: XStream Out and XStream In. XStream Out provides Oracle Database components and APIs that enable you to share data changes made to an Oracle database with other systems.
Figure 1-1 XStream Out
Description of 'Figure 1-1 XStream Out' ![]()
XStream In provides Oracle Database components and APIs that enable you to share data changes made to other systems with an Oracle database.
Figure 1-2 XStream In
Description of 'Figure 1-2 XStream In'
XStream is built on the infrastructure of Oracle Streams. Therefore, XStream inherits the flexibility and functionality of Oracle Streams, including:
Note:
In both XStream Out and XStream In configurations, the client application must use a dedicated server connection.
Note:
When learning about and using XStream, a general knowledge of Oracle Streams concepts is helpful. See the following documents for conceptual information about Oracle Streams:
See Also:
Purpose of XStream
By using XStream, you can accomplish the following goals:
Prerequisites for XStream
Using the XStream APIs requires purchasing a license for the Oracle GoldenGate product. See the documentation for the Oracle GoldenGate product for more information:
In addition, this document assumes that you have the following skills:
Tasks and Tools for XStream
This section describes the common tasks you perform for XStream and the tools to use to complete the tasks.
This section contains the following topics:
XStream Tasks
The common tasks for XStream are the following:
XStream Tools
Use the following tools to complete the tasks for XStream:
Dmv Streams
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