Patching Administrative Installations

A slightly different Patch is required for an administrative installation than for a local installation, and standard AVEVA patches target local installations. If such a Patch is applied to an Administrative Installation Point, the patch will succeed. However, any local installations which have previously been deployed from it will cease to recognize it as their source installation. So as long as local deployments have not occurred, an Administrative installation is patchable with an AVEVA patch. Similarly, if programs within the installation are addressed by a client’s own means, then the Administrative Installation can be patched at any time with impunity. Since in this event the Installation has not been deployed (Locally) and so only the media state has any effect.

AVEVA patches are supplied inside an executable wrapper. To apply them to an administrative image, the patch must be extracted and the appropriated command line used. The appropriate command switch is /C which extracts the contents to the current folder.

Note:
Patches cannot be rolled back from Administrative Installation Points. A copy must be made before the patch is applied, in order to rollback.

Note:
Patches cause changes to the .msi file, which invalidates any security certificates applied to the installation files.