FileMaker Pro may become unstable for a number of reasons and require maintenance or recovery steps to restore the files to working order. Unexpected shutdowns of a FileMaker Server while hosting files is bad and usually leads to immediate, obvious problems or worse, looming, invisible issues that will impact your systems at the least opportune time. Although high transaction volumes in FileMaker files don’t inherently lead to problems but when file problems occur the likely hood of disaster is greater. Interruption of data while it is being written to a FileMaker database frequently causes corruption in the data, scripts, tables or even layouts.

How to Tell When FileMaker Has Crashed
FileMaker Pro crashes present themselves in a few different ways. A dialog box saying “File Invoices.FP7 was forceably closed by host”, for example, or, “Connection to Host was interrupted” A coffee cup might appear on your screen after attempting to type in a field or switching to another FileMaker layout. Attempting to click in the active FileMaker window eventually displays the windows “Not Responding” message along with windows Task Manager also indicating that the application is hung. In FileMaker server you may find something in the Event Viewer indicating that a file was closed. And in the FileMaker Server Admin, under hosted files, you may notice a file marked as “closed”.

FileMaker has built in functions to perform routine preventative file maintenance using the “compact” and “optimize” steps. These functions should be employed on a regular basis to prevent file problems, improve file performance and reduce file size.

The “Recovery” function is used to repair damaged files. This is usually sufficient to restore damaged files to working order. Following recovery, file maintenance should be performed.

Occasionally, in the worst cases, there are two other alternatives to resurrect files, cloning, and complete file reconstruction.