Experiment With One-to-Many Restrictions If you have a one to many join in query with a restriction, try moving the restriction to the other side of the join. Before you can make productive use of these diagnostic tools, you must understand how Office Access interacts with SQL Server. Use a disk defragmenter such as the one found in the Windows 95 Accessories, System tools menu. The source state consists of the contents of your actual modules, with full text including white space, procedure and variable names, and comments. Avoid Expressions and Functions In Sorting and Grouping Try to avoid reports that sort or group on expressions or functions. To accomplish this, you need to be able to analyze the SQL commands that Office Access is submitting. Because of this, RAM will begin to fill up. Dynasets support a continuous two-way conversation between Office Access and SQL Server for each recordset that is open. Pay special care to avoid the use of immediate If IIF functions in sub-queries. In the first example, the value needs to be determined for each iteration of the loop. All comments and white space have been removed, and a stream of executable instructions has been produced-the code is ready to be run.
By placing related procedures in the same module, you can reduce the number of loads the Visual Basic has to make. NTFS adds a significant amount of overhead during disk operations, and Access applications are very disk-intensive. What I still don't understand is, why when I run the update without deleting the indexes first, it takes several hours, but when I delete them first then recreate them, it takes 20 minutes. You may want to defer certain operations, such as opening data access objects in code, or checking objects to a later time. Without that understanding, the SQL statements that you see in Profiler traces and in Sqlout logs can be quite puzzling. These controls can take long to load than other controls and will subsequently slow down the load time of your application. Do this by displaying status messages and progress meters as your application loads forms, runs queries, and performs any other operation that may take a bit of time. There is no need for compilation. Link to the table and set criteria accordingly, or create a separate aggregate totals query. If you want to get the maximum performance out of your data operations, experiment with these settings. The primary strategy for improving performance is to minimize the amount of data returned to the Office Access client and maximize the amount of processing that occurs on the server. This ensures that another user or process hasn't changed any of those values since the last refresh. Consider using status meters to display a task's progress. Windows Performance Tips Keep Databases Local Whenever possible, keep your databases on a local drive instead of on a network drive. When you activate an unbound OLE objects, the memory used in that operation is not released until the form is closed. This action only compiles the modules that are called by the modules you have open. Use the Image Control Use the Image control instead of unbound object frames to display bitmaps. Close Unused Forms Close forms that aren't being used. Keep Enough Local Disk Space Free Access requires a fair amount of disk space to operate, especially with large databases. Any of the following actions can decompile your database: By understanding how this works, you can write more efficient string code. Index Sort Fields Index any fields you use for sorting. Install Windows Locally The Windows operating system should be installed on a local fixed drive on your computer. This means that both sides of the expression are always evaluated, which may not be what you want since intuitively it looks like only the criteria satisfying side would run. To boost development performance i.
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