Databridge Enterprise Server Administrator's Guide > Additional Configuration Options > Caching > Filtered Source Cache Properties Dialog Box

Filtered Source Cache Properties Dialog Box

Getting there

In the right pane of the Databridge Enterprise window, right-click a local (filtered) source, and select Properties.
In the Source Properties dialog box, click [Cache].

Use this dialog box to set caching options for your local sources.

The options are as follows:

Cache parent directory (enables update caching for this source)	Enter or browse to the directory where you want to store the local source cache files. Enterprise Server will create a subdirectory with the name of the local source, and that subdirectory will contain the cached Audit Files An audit file is created by DMSII and contains the raw format of changes made to the DMSII database by update programs. Audit file records contain the deletes, adds, and modifies that were made to the various structures. It can contain, for example, hours', days', or weeks' worth of information. An audit file is created by the DMSII Accessroutines and contains the raw format of changes made to the DMSII database by update programs. Audit file records contain the deletes, creates, and modifies that were made to the various structures. Depending on the frequency of changes made to a database, the information in an audit file can span a few hours or several weeks. If you set the DBEngine Read Active Audit option, Databridge can access the current audit file. If you do not set Read Active Audit = true in the DBEngine parameter file, Databridge can access audit information up to and including the current audit file minus one. The audit file contains the update level at the time the audit file was created. The update level in the audit file and the update level in the DESCRIPTION file used by Databridge must match before Databridge will update a replicated database. When an audit file is closed, DMSII creates the next one in the series. Audit files are closed for several reasons, including the following: An operator closes the audit file with the mixnumber SM AUDIT CLOSE command. The audit file reaches the file size set in its DASDL. There is an I/O error on the audit file. There is not enough disk space for this audit file. The database update level changes due to database definition changes A Databridge accessory closed the file in preparation for the fixup phase after extracting records from a DMSII database. The current audit file could not be found. A file reorganization was executed to modify the DMSII structure. .
When tracking, read cached files	This setting is enabled when a directory appears in the parent directory field. NOTE:If Never or If available is selected for the local source and its cache is exhausted, Enterprise Server searches for additional updates in the base source cache.
	If available	This setting causes Enterprise Server to rely on audit files that have been previously cached. When all of the available cache for the local source has been processed by the client, Enterprise Server reads the base source for more audit information and applies the local filter to each update it finds.
	Only	This setting causes Enterprise Server to rely exclusively on the cached audit files for the local source, and clients will not progress further than the Enterprise Server stored cache. This setting can prevent clients from accessing the base source.
	Never	This setting causes Enterprise Server to ignore any cached audit files for the local source and instead, read from the base source and apply the local filter.
As user	Enter the user account that Enterprise Server will use when reading cached files. Use this setting when accessing cache files using Windows authentication. If the user account is not specified, Enterprise Server will try to access the cache files using the LOCALSYSTEM account, which may not be permitted.
Password	Enter the password for the specified user.
Remove cache files when read n times	Enter the number of Databridge Clients who will access this cached source. After an audit file in the cache has been read that number of times, it is automatically deleted. If you enter 0, Enterprise Server will not remove any cached audit files.