Chapter 3. Plug-in Implemented Server Functionality Reference188NOTEAny change to this attribute will not take effect until the change is saved and the indexis rebuilt using db2index, which is described in more detail in the "Managing Indexes"chapter of the Directory Server Administrator's Guide).Parameter DescriptionEntry DN cn=default indexes, cn=config, cn=ldbmdatabase, cn=plugins, cn=configValid Values Any valid collation order object identifier (OID)Default Value NoneSyntax DirectoryStringExample nsMatchingRule: 2.16.840.1.113730.3.3.2.3.1(For Bulgarian)3.4.5.6. nsSystemIndexThis mandatory attribute specifies whether the index is a system index, an index which is vital forDirectory Server operations. If this attribute has a value of true, then it is system-essential. Systemindexes should not be removed, as this will seriously disrupt server functionality.Parameter DescriptionEntry DN cn=default indexes, cn=config, cn=ldbmdatabase, cn=plugins, cn=configValid Values true | falseDefault ValueSyntax DirectoryStringExample nsSystemIndex: true3.4.6. Database Attributes under cn=monitor, cn=NetscapeRoot,cn=ldbm database, cn=plugins, cn=configThis section covers global, read-only entries for monitoring activity on the NetscapeRoot database.The attributes containing database statistics are given for each file that makes up the database. Forfurther information, see the "Monitoring Server and Database Activity" chapter in the Directory ServerAdministrator's Guide.dbfilenamenumberThis attribute gives the name of the file and provides a sequential integer identifier (starting at 0) forthe file. All associated statistics for the file are given this same numerical identifier.dbfilecachehitThis attribute gives the number of times that a search requiring data from this file was performed andthat the data were successfully obtained from the cache.