| Event Id | 30000 |
| Source | LinearHash |
| Description | The "LHReadRecord" call failed, returning LH error number <error code>, file number <value>, group <value>. <error type> error. |
| Event Information | This information from some newsgroups may help you: ------------------------------------------------------------------------------ The All Networks (NPP) Driver is optimized to work with a large number of LH files simultaneously. As part of this optimization, the NPP Driver can utilize a substantial number of file handles to avoid repeated opening and closing of files. To avoid hoarding file handles, and possibly adversely affecting other applications, the NPP Driver queries the operating system for the number of available file handles and then limits itself to some fraction of those handles. Revelation Software has identified a problem, however, with the allocation of file handles for the NPP driver. The first part of the problem is that the Windows operating environment returns the incorrect number of available file handles. The NPP driver has a secondary check which verifies that there are indeed that many file handles available, but here again, the operating environment can provide misleading results. As a result, the NPP driver can exhaust the available file handles, causing unpredictable problems when other applications, including other parts of the OpenInsight application, try to access operating system files. To solve this problem, the maximum number of files that the NPP uses can be set on a per-workstation basis. To set the maximum number of files to 25, for example, the following section must be added to the OINSIGHT.INI file (located in each workstations Windows directory): [LinearHash] DosFileHandlesMax=Auto If your site has experienced problems using the NPP driver in OpenInsight, Revelation Software suggests that you apply the above changes to each workstation. The following example shows how this can be accomplished in an OpenInsight application: Determine the startup window for the application. This window is typically the "main" window for the application, and quite often is an MDI frame. |
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