Modifying Changelog Purging Attributes by Using ldapmodify Modifying Changelog Purging in Oracle Directory Services Manager

23-6 Oracle Fusion Middleware Performance and Tuning Guide Table 23–3 describes some parameters used to tune the Memory Management Plug-in:

23.3.6 LDAP Listener Tuning

Table 23–4 describes some parameters used to tune the LDAP Listener: Table 23–3 Memory Management Plug-in Settings Parameter Value Notes Size Default: 1000 entries The maximum number of entries that may be cached at any one time. MaxResultSize Default: 1000 entries The maximum number of entries that may be cached for any particular query. Trimsize Default: 1000 entries When the maximum cache size is exceeded, the amount by which the cache manager must reduce the balance. Note: when necessary, trimming is done by purging expired queries first followed by queries in order of least recent use. MaximumAge Default: 600 seconds The maximum age in seconds for any queryentry stored in the cache. MaintenanceInterval Default: 60 seconds The interval in seconds between when the cache manager checks for expired queries. BySubject Default: 1 not shared A flag 1 or 0 indicating whether cache results are shared between subjects. A value of 1 indicates that results are not be shared between subjects. Table 23–4 Listener Parameters Parameter Value Notes Backlog Default: 128 requests Specifies the maximum number of pending connection requests that are allowed to queue up before the server starts rejecting new connection attempts. The default value is sufficient in most cases and the need to change this value is very rare. Reuse address Default: False This option determines whether LDAP listener should reuse socket descriptors. If enabled, the SO_REUSEADDR socket option is used on the Oracle Virtual Directory server listen socket to potentially allow the reuse of socket descriptors for clients in TIME_WAIT state. Oracle Virtual Directory Performance Tuning 23-7

23.3.7 Server Tuning

Table 23–5 describes some basic parameters used to tune the server: Keep Alive Default: False This option determines whether the LDAP connection should use TCP keep-alive. If enabled, the SO_KEEPALIVE socket option is used to indicate that TCP keepalive messages should periodically be sent to the client to verify that the associated connection is still valid. TCP No delay Default: True This option determines whether the LDAP connection should use TCP no-delay. If enabled, TCP_NODELAY socket option is used to ensure that response messages to the client are sent immediately rather than potentially waiting to determine whether additional response messages can be sent in the same packet. Read Timeout Default: 0 This option enablesdisables SO_ TIMEOUT with the specified timeout, in milliseconds. With this option set to a nonzero timeout, client connection to the Oracle Virtual Directory server can remain idle only for this amount of time. If the connection is idle for a period longer than the specified timeout, the client connection is terminated. A timeout of zero is interpreted as an infinite timeout. Warning: This option is equivalent to vde.soTimeoutFrontend system property in Oracle Virtual Directory version 10g. The vde.soTimeoutFrontend system property is not supported for 11g. Users must modify the value specified in system property The mapping of values from 10g to 11g are: .Enabled to 0 Disabled to nonzero amount of time in milliseconds Table 23–5 Server Parameters Parameter Value Notes Anonymous Search Limit Default: 1000 The maximum number of entries returned for an anonymous client. Table 23–4 Cont. Listener Parameters Parameter Value Notes