When a new ARCHIVE version is used for the first time, the system support staff must erase the queue file $TSOS.ARCHIVE.LATER and the checkpoint file $TSOS.ARCHIVE.CHKPT (see section "Work files"). This means, however, that all queuing or interrupted jobs from the old version are lost.
Thus before installing ARCHIVE V12.0A after using lower ARCHIVE versions it is recommended to restart all the requests which need this within the current version and then remove the old checkpoint file. The same recommendation is for switching back to lower versions of ARCHIVE/HSMS after using ARCHIVE/HSMS V12.0A.
An ARCHIVE process should then be started with NOW=NO. ARCHIVE thus creates a new queue file and a new checkpoint file automatically.
If a number of tasks call ARCHIVE simultaneously during the first start, conflicts can occur during creation of the checkpoint file which lead to a program crash.
If systems support load an ARCHIVE version that does not match the operating system, ARCHIVE will close with one of the following messages: ARC0007, ARC0009 or ARC0294. In order to be able to load the current version of ARCHIVE, systems support must first unload the subsystem (see section "Loading and unloading ARCHIVE").