Microsoft KB Archive/154869

= PRB: Error "Too many client tasks" When Using Jet =

Article ID: 154869

Article Last Modified on 6/24/2004

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APPLIES TO


 * Microsoft Visual Basic 4.0 Professional Edition
 * Microsoft Visual Basic 4.0 Professional Edition
 * Microsoft Visual Basic 4.0 16-bit Enterprise Edition
 * Microsoft Visual Basic 4.0 32-Bit Enterprise Edition

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This article was previously published under Q154869



SUMMARY
When trying to use the database features of Visual Basic, you may receive the error message "Too many client tasks." This occurs when more than 10 applications running on the same machine try to use the Jet database engine.



CAUSE
The Jet database engine versions 1.1, 2.0, and 2.5 can only be used by 10 client applications simultaneously on any one machine.



WORKAROUND
It is not possible to have more than 10 client applications making use of the 16-bit Jet database engine on one machine. If it is essential that a software system have more than 10 executables on the same machine with access to one or more databases, the system could be designed with one "server" exe accessing the database and multiple "client" programs making requests for data from this "server" via an inter-process communication (IPC) mechanism. For example, with Visual Basic version 4.0, this could be achieved using OLE automation.



STATUS
This behavior is by design.

(This is not an issue with Jet 3.0 as used by Visual Basic 4.0 32-bit.)

