About HP DCE/9000 Version 1.7

Interoperability and Compatibility

Interoperability and Compatibility

This section describes the interoperability of this release with various implementations of OSF DCE, and its compatibility with previous versions of HP DCE, and with DCE-related technologies.

Binary Compatibility with Previous HP DCE Releases

Applications built on HP-UX 10.30 with HP DCE 1.6 may need to recompile due to the versioning of libdce and libcma in HP-UX 11.0. HP DCE 1.7 supports binary compatibility with HP DCE 1.2.1 and later releases. Applications linked with the archived HP DCE 1.2, 1.2.1, 1.3.1, 1.4, 1.4.1, 1.4.2, and 1.5 libdce are fully compatible with applications built with HP DCE 1.7 libraries. These applications can share login contexts and credentials without loss of data.

Binary compatibility for statically-linked HP DCE 1.2, 1.2.1, 1.3.1, 1.4, 1.4.1, 1.4.2, and 1.5 applications can be disabled, resulting in minor performance gains and slightly smaller credentials files. By default, binary compatibility is enabled when HP DCE 1.7 is installed and configured. You may disable binary compatibility on a per-host basis with the following commands:

#ps -efgrep dced #kill <dced PID#> #/opt/dce/sbin/dced -r #ps -efgrep dced

#kill -SIGUSR1 <dced pid#> #dcecp -local

dcecp> acl mod hostdata -change {user hosts/$HOST/self criI} -local dcecp> acl mod hostdata -io -change {users hosts/$HOST/self cdprw} -local dcecp> quit

#kill -SIGUSR1 <dced pid#> dcecp>

dcecp> hostvar set -secbinarycompat off

To enable binary compatibility after it has been disabled, do the following:

1. Issue the command:

dcecp> hostvar set -secbinarycompat on

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Planning and Configuring HP DCE 1.7

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HP UX DCE Software manual Interoperability and Compatibility, Binary Compatibility with Previous HP DCE Releases

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.