The maintenance program is a very powerful support tool. The maintenance can perform many functions. Understanding what the program does may help you understand how the program runs. The maintenance program can be configured to correct damaged tables. It can be configured to archive history. It can even be configured to correct fields that may otherwise cause a conflict in the system.
But the biggest thing that it does is re-index the tables every day. The term re-indexing means that there are fields inside of the system that is more important than others. There are fields that link all the tables together, or the fields that you search by. It indexes those fields to be able to perform those functions. If you ever encounter an error that states that the TAG is not found, then chances are the indexes need to be re-indexed to be able to perform properly. This is a very rare occurrence, but it may happen if the maintenance has not been run for a very long time.
Keep in mind that the maintenance can not be run while the system is being used for anything else. If you leave your program open when you leave for the day, it may cause another error. So make sure that you close your program every day before you leave. One other thing that you may want to check is that the backup system is not overlapping the maintenance program. This may cause a much larger problem because they are both trying to access the same files at the same time. We call that exclusive use of a table. The maintenance has to have exclusive use of all the tables to be able to perform its functions.
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