Event ID - 7051

Event Id7051
SourceMicrosoft SharePointPS Search Service
DescriptionIndex propagation to search server <Computer_Name (IP_Address)> was not accepted. Context: http://Server/ Application, KBCatalog Catalog Details: The content index server cannot update or access information because of a database error. Stop and restart the search service. If the problem persists, reset and recrawl the content index. In some cases it may be necessary to delete and recreate the content index.
Event InformationAccording to Microsoft:
CAUSE 1:
This problem occurs if the Ese.dll file does not load correctly, and the Esent.dll file is loaded instead by the Mssearch.exe process. This causes the search functionality to stop working.
RESOLUTION:
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem.Only apply it to systems that are experiencing this specific problem.You must restart the Microsoft Search service after you apply this hotfix.

CAUSE 2:
This issue occurs if the number of log files that are created for the Sps.edb file reaches the maximum number of log files. That is, this issue occurs if the name of the log file is MssFFFEF.log. The Sps.edb file is the property store that stores the properties of the items that are crawled by SharePoint Portal Server 2003. The Sps.edb file and the log files are located in the following folder:
Drive:\Program Files\SharePoint Portal Server\Data\GUID
The names of the log files that are created for the property store contain a hexadecimal number. The hexadecimal number is incremented for each new log file that is created. When the log file name is MssFFFEF.log, no more log files can be created for the property store.
RESOLUTION:
To work around this issue, follow these steps:
Step 1: Delete the log files for the property store.
Step 2: Increase the log file size.
Reference LinksThe Microsoft Search service does not work in SharePoint Portal Server 2003

Users cannot search for content on the portal site, the content indexes do not propagate to the search server

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