Oracle Advanced Security Administrator's Guide Release 8.1.6 A76932-01 |
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This chapter briefly describes the Distributed Computing Environment (DCE) and the Oracle DCE Integration product.
`This chapter contains the following topics:
See the list of related books and papers in "Related Publications" in the Preface.
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Oracle DCE Integration requires Net8 and Oracle8i. It enables Oracle applications and tools to access Oracle8i servers in a distributed computing environment.
Oracle DCE Integration is based on the Open Software Foundation (OSF) DCE V1.1 and above, and will be compatible with OSF's future DCE releases.
OSF has merged with another standards group, X/OPEN, to form The Open Group. This group will continue to support DCE.
Oracle servers running DCE Integration 2.3.2 and later are backward compatible with clients running SQL*Net/DCE 2.1.6 or 2.2.3; however, the 2.1.6 clients cannot take advantage of external roles.
A client running DCE Integration 2.3.2 or later cannot connect to a SQL*Net/DCE 2.1.6 or 2.2.3 server. A DCE Integration release 2.3.2 or later client requires a 2.3.2 or later server in order to connect to a database.
The Distributed Computing Environment (DCE) from the Open Software Foundation (OSF) is a set of integrated network services that work across multiple systems to provide a distributed environment. The network services include remote procedure calls (RPCs), directory service, security service, threads, distributed file service, diskless support, and distributed time service.
DCE is the middleware between distributed applications and the operating system/network services and is based on a client/server model of computing. By using the services and tools that DCE provides, users can create, use, and maintain distributed applications that run across a heterogeneous environment.
The following topics are described in this section:
Oracle DCE Integration enables use of Oracle tools and applications to access Oracle8i servers in a DCE environment.
Oracle's DCE Integration product consists of DCE Communication/Security and DCE CDS Native Naming.
DCE Communication/Security includes the following:
The DCE CDS Native Naming component includes naming and location transparency.
DCE Integration registers Oracle8i connect descriptors in the DCE Cell Directory Service (CDS), allowing them to be transparently accessed across the entire DCE environment. Users can connect to Oracle database servers in a DCE environment using familiar Oracle service names.
The DCE Cell Directory Service offers a distributed, replicated repository service for name, address, and attributes of objects across the network. Because servers register their name and address information in the CDS, Oracle clients can make location-independent connections to Oracle8i servers. Services can be relocated without any changes to the client configuration. An Oracle utility is provided to load the Oracle service names with corresponding connect descriptors into CDS. After this is done, Oracle connect descriptors can be viewed from a central location with standard DCE tools.
For location of services across multiple cells, either of the following options can be used:
For more information about DCE CDS Native Naming, see the following:
More Information:
Oracle Advanced Security provides flexibility in your use of DCE services. You have the following options:
The following are limitations in the current release (8.1.6) of Oracle Advanced Security:
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