PRB: Insufficient Memory or Not Enough Memory for Application

• Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0
• Microsoft FoxPro for Windows, versions 2.5, 2.5a, 2.5b, 2.6x

SYMPTOMS

One of the following error messages may occur when you attempt to start FoxPro for Windows or when you are running FoxPro for Windows:

• Insufficient memory

  -or-

• Not enough memory for application (minimum 2187264 required)

  -or-

• Not enough memory for application (minimum 2158592 required)

CAUSE

There is not enough virtual memory available to start FoxPro for Windows. Virtual memory is a technique used by Windows to simulate additional memory for an application to use. Applications access the memory through virtual addresses, which are mapped to physical addresses on the disk.

RESOLUTION

Use one of the following methods to increase the amount of virtual memory.:

METHODS FOR FOXPRO 2.x FOR WINDOWS ONLY

Method 1

Reduce the minimum amount of memory allocated to FoxPro for Windows by the MEMLIMIT statement in the CONFIG.FPW file.

NOTE: This method does not apply if you are just starting FoxPro.

Method 2

Increase the percentage of available memory allocated to FoxPro for Windows in the MEMLIMIT statement in the CONFIG.FPW file.

METHODS FOR FOXPRO 2.x AS WELL AS VISUAL FOXPRO

Method 1

Increase the size of the Windows swap file. In Windows 3.1, do the following:

1. From the Main group in Program Manager, run Control Panel, and then choose the 386 Enhanced icon.

2. Choose the Virtual Memory button.

3. Choose the Change button.

4. Select the type of virtual memory you want to use (Temporary or Permanent) from the Type list box, then enter a larger size in the New Size box. The new swap file does not take effect until Windows is restarted.

Method 2

If an Expanded Memory Specification (EMS) emulator is in use, remove it or reduce the amount of expanded memory it provides. EMM386.EXE, provided with MS-DOS and Windows, has this emulation capability.

Method 3

Reduce the size of your disk-caching software. Windows cannot use XMS memory that a disk cache is using. SMARTDRV.EXE is the disk cache provided with MS-DOS and Windows.

Method 4

Verify a valid path exists for the temporary files that FoxPro creates, and that there is at least 5 MB of room available for the creation of these temporary files.

For more information on using virtual memory and swap files, query on the following words here in the Microsoft Knowledge Base:

   swap and file and determines and maximum

1. At the MS-DOS prompt, type the following command:

         RENAME foxuser.dbf foxuser.dbk
   

2. Restart FoxPro. A new FOXUSER.DBF file is automatically created.

REFERENCES

"Microsoft Windows Resource Kit," version 3.1, page 456