Planning and Configuring HP-UX DCE 1.9

Chapter 2

About HP-UX DCE Version 1.9

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-UX DCE, and with DCE-related technologies.

Binary Compatibility with Previous HP-UX DCE Releases

HP-UX DCE 1.9 supports binary compatibility with HP-UX DCE 1.2.1 and later releases. Applications linked

with the archived HP-UX DCE 1.2, 1.2.1, 1.3.1, 1.4, 1.4.1, 1.4.2, 1.5, 1.6, or 1.7 libdce are fully compatible

with applications built with HP-UX DCE 1.9 libraries. These applications can share login contexts and

credentials without loss of data.

Binary compatibility for all statically-linked HP-UX DCE versions can be disabled, resulting in minor

performance gains and slightly smaller credentials ﬁles. By default, binary compatibility is enabled when

HP-UX DCE 1.9 is installed and conﬁgured. You may disable binary compatibility on a per-host basis with the

following commands:

#ps -ef|grep dced#kill <dced PID#>

#/opt/dce/sbin/dced -r

#ps -ef|grep dced

#kill -SIGUSR1 <dced pid#>

#dcecp -localdcecp> acl mod hostdata -change {user hosts/$HOST/self criI} -localdcecp> acl mod hostdata

-io -change {users hosts/$HOST/self cdprw} -localdcecp> 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

2. Stop and restart DCE daemons.

3. If using Integrated Login, log out and log in.

If a statically-linked HP-UX DCE 1.2, 1.2.1, 1.3.1, 1.4, 1.4.1, 1.4.2, 1.5, 1.6, or 1.7 application purges a

refreshed, one of the credential ﬁles will not be deleted from the disk. This ﬁle is located in

/var/opt/dce/security/creds. The ﬁle name will consist of the unique credential cache ID associated

with the login context and a ".data.db" sufﬁx. Administrators may remove this ﬁle manually if they wish.

Source Code Compatibility with Previous HP-UX DCE Releases

There are no known source code incompatibilities between HP-UX DCE 1.9 and previous releases.

Interoperability with Other Implementations of OSF DCE

Hewlett-Packard's DCE conﬁguration tools are not guaranteed to interoperate with other vendor's DCE

implementations. In particular:

• The DCE Conﬁguration Manager, DCM, will conﬁgure any HP-UX DCE/9000 Version 1.4x Series 700/800

system. It will also conﬁgure versions 1.6, 1.5, 1.3.1, 1.2, and 1.2.1 of HP-UX DCE/9000, but some

operations may not be supported.

• DCM will discover a cell in its entirety, including non-HP systems provided the non-HP systems have

been correctly conﬁgured in the CDS name space. (DCM cannot conﬁgure non-HP systems.)