Modifying Performance-Related Instance-Specific Configuration Entry Attributes
23.3.2 Join Adapters
If you are using Join Adapters, join only appropriate sources. For example if a deployment requires only to link attributes in the primary source under cn=users branch, create a primary adapter that only exposes this branch. And then create the join rule with that adapter. This can reduce the need for Oracle Virtual Directory to try to join entries that may never have corresponding linked entries.23.3.3 General Filter Tuning
If a known client search filter does not apply to certain adapters, apply the filter to all applicable Exclude Filters to improve performance and reduce network traffic.23.3.4 Load Balancer Local Store Adapter Tuning
Some load balancers query an LDAP server to determine if it is up or down. If your load balancer uses this feature - consider creating a local store adapter with a separate namespace for example dc=loadbalancer that is used only for the load balancer. While the performance impact of the load-balancer is probably not noticeable, by keeping it in a separate namespace. it makes it easier to exclude the load-balancer KeepAlive requests from creating large log files during troubleshooting.23.3.5 Cache Plug-In Tuning
The CachePlug-in provides an in-memory cache for Oracle Virtual Directory. It has the ability to cache query results from any source for re-use by LDAP clients. This plug-in can improve performance for those applications where queries are highly repetitive. To review cache operation and configuration, set VE logging level to ’Dump’ to see more details. Because the cache is a normal plug-in, the cache can be configured to run anywhere within Oracle Virtual Directory. It can be executed globally, or within the context of a single adapter. It can also be restricted to specific namespaces by using the namespace filtering available in standard plug-in configuration.23.3.5.1 Cache Hit Logic
The cache works by storing query results and making them available for later use. If a query is repeated by the same user and the same attributes or a subset of attributes are requested, the cache can return its results instead of having Oracle Virtual Directory pull the information from the source. The plug-in can also be configured to allow cache hits to be shared between users. Sharing cache entries between users should not be used unless the pass credentials are not being passed to back-end sources and Oracle Virtual Directory is solely responsible for security enforcement. Careful consideration should be given when sharing cache hits between users as it would then be possible for one user to see something they should not, since they may have access to a cache result from a more privileged user.23.3.5.2 Cache Plug-in Memory Management
This plug-in periodically reviews the cache and checks for expired results, or entries that have been invalidated by a previous modify transaction. In the event that the cache quota is exceeded, the plug-in attempts to trim memory by purging the queries that were least recently used LRU. Tip: Always make sure that the attributes used by join rules are properly indexed. 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.Parts
» Oracle Fusion Middleware Online Documentation Library
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» Related Documentation Oracle Fusion Middleware Online Documentation Library
» About Identifying Top Performance Areas
» Ensure the Hardware Resources are Sufficient
» Selecting a Garbage Collection Scheme
» Disabling Explicit Garbage Collection
» Logging Low Memory Conditions
» Monitoring and Profiling the JVM
» Initialization Parameters for Oracle 10g
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» Tuning Redo Logs Location and Sizing
» Automatic Segment-Space Management ASSM
» Reuse Database Connections Oracle Fusion Middleware Online Documentation Library
» Enable Data Source Statement Caching
» MaxClientsThreadsPerChild HTTP Connection Limits
» Setting the Maximum Number of Connections for Data Sources Tuning the WebLogic Sever Thread Pool
» Tuning Oracle WebCenter Concurrency
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» Set Logging Levels Oracle Fusion Middleware Online Documentation Library
» About Oracle Fusion Middleware Performance Planning
» Define Operational Requirements Identify Performance Goals
» Understand User Expectations Define Your Performance Objectives
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» Design Applications for Performance and Scalability
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» Oracle WebLogic Server Administration Console
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» Oracle Process Manager and Notification Server Oracle Enterprise Manager 11g Grid Control
» Native Operating System Performance Commands Network Performance Monitoring Tools
» How Persistent Connections Can Reduce Httpd Process Availability
» Access Logging Oracle HTTP Server Logging Options
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» Beware of Having More Modules
» Monitoring Oracle HTTP Server
» DMS Nouns Common DMS Terms and Concepts
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» DMS Availability Oracle Fusion Middleware Online Documentation Library
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» Viewing Metrics Using the Spy Servlet
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» DMS Execution Requests and Sub-Tasks
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» Adding and Editing Destinations
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» Understanding DMS Event Output
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» DMS Best Practices Oracle Fusion Middleware Online Documentation Library
» About Oracle Metadata Services MDS
» Reclaim Disk Space Monitor the Database Performance
» Using Database Polling Interval for Change Detection
» Document Cache Tuning Cache Configuration
» Analyzing Performance Impact from Customization
» Understanding DMS metrics and Characteristics
» About Oracle ADF Oracle Fusion Middleware Online Documentation Library
» Oracle ADF Faces Configuration and Profiling
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» Creating View Objects View Objects Tuning
» Configuring View Object Data Fetching
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» Batch Processing ADF Server Performance
» General AM Pool Configurations
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» About Oracle TopLink and EclipseLink
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» Coherence Integration Oracle Fusion Middleware Online Documentation Library
» Mapping and Descriptor Configurations
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» Hardware Resources Optimizing Hardware Resources
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» Network Bandwidth Optimizing Network Connections
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» Optimizing Response Time Oracle Fusion Middleware Online Documentation Library
» Optimizing Performance with Oracle ADF
» About SOA Suite Configuration Properties
» Configuring Data Sources for SOA Weblogic Server Performance Tuning
» Modifying SOA Configuration Parameters JVM Tuning Parameters About Oracle Business Rules
» Use Java Beans Basic Tuning Considerations
» Assert Child Facts instead of Multiple Dereferences
» Avoid Side Affects in Rule Conditions
» Avoid Expensive Operations in Rule Conditions
» Consider Pattern Ordering Basic Tuning Considerations
» Consider the Ordering of Tests in Rule Conditions
» Use Functions Instead of AssertXPath and Supports XPath
» Dispatcher Invoke Threads BPEL Threading Model
» Dispatcher Engine Threads BPEL Threading Model
» Dispatcher System Threads BPEL Threading Model
» Dispatcher Maximum Request Depth
» Audit Level Basic Tuning Considerations
» AuditDetailThreshold Basic Tuning Considerations
» LargeDocumentThreshold Basic Tuning Considerations
» Validate XML Basic Tuning Considerations
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» InstanceKeyBlockSize Basic Tuning Considerations
» Tables Impacted By Instance Data Growth
» About Oracle Mediator Oracle Fusion Middleware Online Documentation Library
» metricsLevel Basic Tuning Considerations
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» Resequencer Basic Tuning Considerations
» Audit Level LargeDocumentThreshold Basic Tuning Considerations
» Dispatcher Engine Threads Basic Tuning Considerations
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» Process Measurement Tuning Process Analytics
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» Minimize Client Response Time
» Choose the Right Workflow Service Client
» Narrow Qualifying Tasks Using Precise Filters
» Retrieve Subset of Qualifying Tasks Paging
» Fetch Only the Information That Is Needed for a Qualifying Task
» Reduce the Number of Return Query Columns Use the Aggregate API for Charting Task Statistics
» Use the Count API Methods for Counting the Number of Tasks
» Create Indexes On Demand for Flexfields
» Use the doesTaskExist Method
» Archive Completed Instances Periodically
» Select the Appropriate Workflow Callback Functionality
» Minimize Performance Impacts from Notification
» Deploy Clustered Nodes Improving Server Performance
» Use Workflow Reports to Monitor Progress
» Specify Escalation Rules Completing Workflows Faster
» Specify User and Group Rules for Automated Assignment
» Use Task Views to Prioritize Work
» Tuning Identity Provider Oracle Fusion Middleware Online Documentation Library
» Tuning the Database Oracle Fusion Middleware Online Documentation Library
» About Oracle Adapters Oracle Fusion Middleware Online Documentation Library
» Inbound Throttling Best Practices
» Outbound Throttling Best Practices
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» JCA Adapter Basic Tuning Considerations
» Existence Checking Oracle JCA Adapter for Database Tuning
» adapter.jms.receive.threads Property
» Oracle Socket Adapter Tuning Oracle MQ Adapter Tuning
» Tune the Active Data Retrieval Interval
» Message Batching Enterprise Message Source Tuning
» About Oracle Business Activity Monitoring About Oracle User Messaging Services
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» About Oracle Internet Directory
» Introduction to Tuning Oracle Internet Directory
» Database Parameters Basic Tuning Considerations
» LDAP Server Attributes Basic Tuning Considerations
» Database Statistics Basic Tuning Considerations
» Replication or Oracle Directory Integration Platform Replication Server Configuration
» Garbage Collection Configuration Advanced Configurations
» Oracle Internet Directory with Oracle RAC Database
» Password Policies and Verifier Profiles
» Values for Configuring the Entry Cache
» Tuning Security Event Tracking
» Number of Entries to be Returned by a Search
» Timeout for Write Operations
» Bulk Load Operation Specific Use Cases
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» High LDAP Write Operations Load
» Entry Cache Enabled Configuration
» Entry Cache Disabled Configuration.
» Optimizing Searches for Skewed Attributes
» Optimizing Performance of Complex Search Filters
» Updating Database Statistics by Using oidstats.sql
» Setting Performance-Related Replication Configuration Attributes
» Modifying Instance-Specific Attributes by Using Fusion Middleware Control
» Modifying Shared Attributes by Using Fusion Middleware Control
» Modifying Performance-Related Instance-Specific Configuration Entry Attributes
» About Oracle Virtual Directory Basic Tuning Considerations
» Database Adapters Advanced Tuning Configurations
» Join Adapters Advanced Tuning Configurations
» General Filter Tuning Advanced Tuning Configurations
» Load Balancer Local Store Adapter Tuning
» Cache Hit Logic Cache Plug-In Tuning
» Cache Plug-in Memory Management
» LDAP Listener Tuning Advanced Tuning Configurations
» Server Tuning Advanced Tuning Configurations
» Connection Pool Settings Connection Settings Federation Data Store Settings
» RDBMS Compression Database Tuning
» About Oracle Identity Federation Oracle HTTP Server Tuning
» SOAP Connections SAML Protocol Tuning
» XML Digital Signatures POST and Artifact Single Sign-On Profiles
» About Security Services Oracle Fusion Middleware Online Documentation Library
» OPSS PDP Service Tuning Parameters
» Policy Manager Oracle Web Services Security Tuning
» Configuring the Log Assertion to Record SOAP Messages
» Monitoring the Performance of Web Services
» Setting System Limit Setting JDBC Data Source
» Setting JRockit Virtual Machine JVM Arguments Using Content Compression to Reduce Downloads
» Setting HTTP Session Timeout Setting JSP Page Timeout
» Setting ADF Client State Token
» Setting ADF View State Compression
» Setting MDS Cache Size and Purge Rate Configuring Concurrency Management
» Tuning Performance of the Announcements Service
» Tuning Performance of the Discussions Service
» Tuning Performance of the Portlet Service
» Enabling Java Object Cache for WSRP Producers
» Suppressing Optimistic Rendering for WSRP Portlets
» Tuning Performance of Oracle PDK-Java Producers
» Setting ExcludedActionScopeRequestAttributes for Portlets
» Setting DefaultServedResourceRequiresWsrpRewrite for WSRP Portlets
» Setting DefaultProxiedResourceRequiresWsrpRewrite for WSRP Portlets
» Importing Consumer CSS Files in IFrame Portlets
» Configuring Portlet Timeout Tuning Portlet Configuration
» Tuning Performance of OmniPortlet
» Segregation of Network Traffic Segregation of Processes and Hardware Interrupt Handlers
» CPU Requirements Memory Requirements
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