About HP DCE/9000 Version 1.7

Notes, Cautions and Warnings Regarding This Release

dcecp secval Change

At HP DCE 1.6, dcecp’s secval activate and secval deactivate commands became asynchronous. They return before the actual change takes place within dced. Therefore, you should use the secval status command to verify the state change. Prior to HP DCE 1.6, secval activate and secval deactivate were synchronous and did not return until the actual state change finished in dced. Although future

HP DCE/9000 releases may reimplement synchronous secval activate and deactivate commands, the verification by secval status is still recommended.

HP DCE/9000 Interoperability with SharedPrint/UX

SharedPrint/UX 1.3 or earlier will not operate with HP DCE/9000.

k5dcelogin Limitation

There is a limitation in the k5dcelogin command when called by rlogin -fto log in to the local node.

If you already have Kerberos credentials on the local node when using rlogin -fto log in, then when you exit or log out, your local Kerberos credentials will be deleted. This is a limitation in k5dcelogin, where the local credentials are deleted on completion of the process.

The workaround is to use rlogin without the -foption when logging in to the local node. When you use rlogin -fto log in to a remote node, k5dcelogin deletes the credentials on the remote system once you exit the remote system; this is intended behavior.

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Planning and Configuring HP DCE 1.7

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HP UX DCE Software manual Dcecp secval Change, HP DCE/9000 Interoperability with SharedPrint/UX, K5dcelogin Limitation

UX DCE Software specifications

HP UX DCE Software, or Hewlett-Packard UNIX Distributed Computing Environment, represents a significant tool in the realm of distributed system architecture. Designed primarily for enterprise environments, HP UX DCE enhances the reliability, scalability, and manageability of applications over diverse networked systems.

One of the main features of HP UX DCE is its ability to integrate various computing platforms, enabling seamless communication and resource sharing across distributed nodes. This facilitates the creation of complex applications that can operate on a multitude of systems, thus enhancing operational flexibility. DCE employs standardized interfaces, which means applications written for one platform can run on any other platform that supports DCE, promoting cross-platform compatibility.

In terms of technologies, HP UX DCE utilizes Remote Procedure Calls (RPC) as a core feature. This mechanism allows different applications to communicate and invoke procedures on remote systems as if they were local calls. Additionally, DCE includes a robust security model that incorporates Kerberos for authentication, ensuring that communication between nodes remains secure and protected against unauthorized access.

Another significant characteristic of HP UX DCE is its distributed file system, which allows for transparent file access across different machines. The DCE File System (DFS) provides a unified namespace and manages data replication and consistency across distributed storage resources. This reduces the complexity of data management and enhances data availability.

HP UX DCE also supports a variety of programming languages, making it accessible for developers accustomed to different coding environments. This versatility encourages widespread adoption and innovation, as developers can leverage existing skills to create distributed applications.

Furthermore, HP UX DCE is built for high availability, ensuring that critical applications remain responsive even in the face of hardware or network failures. Its inherent component redundancy and fault-tolerant architecture are designed to minimize downtime, which is essential for mission-critical applications in enterprise scenarios.

In conclusion, HP UX DCE Software provides a comprehensive framework for developing, deploying, and managing distributed applications. Its core features such as RPC support, a secure authentication mechanism, a robust file system, and cross-platform compatibility make it a vital resource for organizations aiming to leverage distributed computing effectively. As enterprises evolve, HP UX DCE stands out as an influential solution in the dynamic landscape of distributed environments.