NLOUG 2017- Oracle WebCenter Portal 12c Performance

Oracle WebCenter Portal 12c
Enhance your Enterprise Portal Performance
Daniel Merchán García

Agenda
• Introduction
• Overview of Performance Issues
• Oracle WebCenter Portal
• Performance Checking Tools
• Configuration, tuning and tips.
• BUGs and Patches in 12.2.1.2
• Oracle WebCenter Content
• Performance Checking
• Components.
• Configuration Variables
• Oracle WebLogic Application Server
• Security Providers
• Data Sources
• Policy and Identity Store
• Java JVM
• Memory
• Garbage Collectors
• O.S Entropy
• Contact Details
• Ask / Share your Experience with WebCenter Portal ☺

Introduction
Why Oracle WebCenter Portal can be slow?

History
Oracle WebCenter Portal performance is a common topic in Oracle
WebCenter community.
Happily now… We are in 12cR2 synchronized with the latest release of
Oracle ADF. ☺
• 12c: The TPS is around 38% much better than 11.1.1.9
• 12c: The ART is around 26% much better than 11.1.1.9
But, many customers still run their platforms on 11gR1!
Reference:
http://www.oracle.com/technetwork/middleware/webcenter/portal/lea
rnmore/wcportal-performance-benchmarks1221-2859701.pdf

Why is it slow
then?
• Is it Oracle ADF really slow? -> NO.
• Unexperienced developers can create easily
bottlenecks by using Oracle ADF.
• 12cR2 performance is much better compared to
11gR1.
• Oracle ADF can be slower than Front-End
technologies such as Oracle JET. Do not promise a
Front-End technology Average Response Time.
• Is it Oracle WebCenter Portal slow? -> NO.
• Default installation configurations are not
suitable for Production Environments.
• Custom Developments -> Non usage of Caching
Mechanism or Lazy Loading.
• Non-Patching / Upgrading.
• Abusive number of components in a single page.

Overview
My system is slow, but where… why?

Where and why!
It is important that you identify what and where is specifically slow before of checking all the components
within the Architecture.
For example:
• Is it the Login slow?
• Maybe there is a bottleneck with the LDAP or the settings are not tuned properly.
• Is it the Home Page of your Portal slow?
• Do not overload the Home Page with million of components!.
• Enable the “perfDebug” mode to quick understand which components are loading slow.
• Is it in General everything slow?
• If OOTB Portals, Administration Portal and everything in general seems to be very slow then we need to have a look into HW,
OS, Database, Java and other under layer components.
• The documents and data files served from Oracle WebCenter Content are slow
• WebCenter Content has not been tuned properly.
• Database queries are performing slow due to fragmentation on Database indexes.

Where are the Bottlenecks? The Pyramid ☺
Load
Balancer
Oracle HTTP
Server
Custom
Developments
Oracle WebCenter Portal
Oracle WebCenter Content
WebLogic
Java / JVM
Database
Networking and NFS
O.S
Hardware

What we will discuss in this presentation
• Performance check, Configuration, Tuning and tips for Oracle WebCenter Portal.
• Performance check, Configuration, Tuning and tips for Oracle WebCenter Content.
• Configuration, Tuning and tips in Oracle WebLogic Application Server.
• Some tuning an tips for the Java JVM
• You will not find biggest infrastructure tweaks here or tutorials! ☺.

Oracle WebCenter Portal
Performance Check, Configuration, Tuning and Tips

Performance Tools: EM
Overview
• Oracle WebCenter Portal 12c as part of
the Oracle Fusion Middleware is tightly
integrated with Oracle Diagnostic Tools
and Oracle Enterprise Manager.
• It allows to quickly check the following
metrics:
• % of CPU and Memory usage.
• Health of WebLogic Server (STUCK
Threads?)
• WebCenter Pages Perfomance.
• Portlet Performance.
• Monitor LDAP server performance.
• Monitor Portal Tools & Services.

Performance Tools: EM Metrics I
General Metrics
• Security Metrics: It will shows the LDAP statistics.
Cache hits and the Average Response Time in the
lookups. This metric is useful to identify if there is
any bottleneck against the LDAP server.
• WebCenter Portal Tools & Services: It displays
metrics and statistics relative to Portal Services
such as Announcements, Discussions, Content
Repositories.

Performance Tools: EM Metrics II
General Metrics
• WebLogic Health Check: JVM, Garbage Collector, JDBC, CPU and RAM consumption.

Performance Tools: EM Tips
• Use the Enterprise Manager Console for a quick overview of the Health status of Oracle WebCenter Portal.
Do not make it the only tool you will use to check the performance status ☺.
• Once you have identified the areas with issues then focus on them: LDAP, Networking, WebCenter
Content….
• I would recommend you to use Oracle WebLogic Administration Console for a quick Health check for
Threads Status. In this console is easier to generate and check a Thread Dump in case of existing STUCK
Threads.
• Help your JVM Performance analysis JConsole or Java Mission Control if necessary.
• Page Performance Metric is a little bit tricky. The default Page Response Threshold is 10 seconds.
Personally, I consider this value is too high.
How many seconds is your Page Response Threshold acceptance?.
So, it means that maybe some indicators can be shown as “Green”, but for the Customer is “Red” ☺.

Performance Tools: WCP Performance Pack I
• Oracle WebCenter Performance Pack is a new performance agent / tool that can be installed and enabled in
an Oracle WebCenter Portal Platform. The information looks similar to Java Mission Control as it focus is to
identify bottlenecks on Code Execution, Threads etc…

Performance Tools: WCP Performance Pack II
• The best tools offered by WCP Performance Pack are:
• Event List: Track a Request and check all the method calls latency.
• Method Statistics: To identify which methods are being executed extremely slowly.

Performance Tools: WCP
Performance Pack Tips
• Use WCP Performance Pack for
identify Methods that are executed
very slow. It can give a more specific
vision where is the bottleneck.
• Run it ONLY when checking
Performance. The Agent should be
STOPPED in Production! ☺
• WCP Performance Pack does not
replace Java Mission Control (The
legacy JRockit Mission Control). Java
Mission Control is a very powerful
tool for checking JVM issues ☺.
However, WCP Performance Pack will
provide statistics and relevant
information pre-configured.

Performance Tools: PerfDebug Mode
• WebCenter Portal can be configured to display the Response Time of the components embedded in the
Page.
• Enable it by changing webcenter-config.xml file (property <webcenter:perfdebug-
enabled>true</webcenter:perfdebug-enabled>)

Performance Tools: PerfDebug Mode Tips
• Do not forget to switch off the perfDebug mode for Production / Live environments.
• The time displayed is how long takes to execute and display the first activity of each ADF Component. If you
have implemented any Lazy Loading strategy then perfDebug will display only good latency responses ☺.
• Use it to identify what are the components which are consuming excessive time to execute.
• Out-of-the-Box components: Which services consume? Any clue why are they so slow?.
• Custom Components: Bad design which ends in bad performance.
Note: Oracle ADF Bounded Task Flows are executed sequentially and synchronously. If one of the Task Flows
has a very bad performance then it will affect the rendering of the Page.

WCP: Oracle ADF Tuning Tips I
• Always try to follow the Oracle ADF Best Practices for developing. For example:
• Tune your ADF BC Application Modules to avoid excessive Passivation / Activation.
• Tune your View Objects accordingly to the rows Fetch Size expected in the UI.
• [extend.spaces.webapp.war]. Do not forget to switch OFF what you have turn ON in your web.xml during the
development stage.
Parameter Description Default value
org.apache.myfaces.trinidad.COMPRESS_VIEW_STATE Controls whether or not the
page state is compressed
True*. In 11g there was a bug that keep this
parameter in False
org.apache.myfaces.trinidad.resource.DEBUG To disable client for caching
resources
False
oracle.adf.view.rich.CHECK_FILE_MODIFICATION Controls whether ADF faces
check for modification date of
JSP pages and discard any saved
state if the file is changed
False
org.apache.myfaces.trinidad.DISABLE_CONTENT_COMPRES
SION
Disables the Skin CSS
compression for helping
development of Skins
False
org.apache.myfaces.trinidad.DEBUG_JAVASCRIPT Debug JavaScript False

WCP: Oracle ADF Tuning Tips II
• Pages with multiple Task Flows can delay the Page
rendering. Follow one of the following tips to reduce
the Page loading time:
• Lazy Loading: An Oracle WebCenter Portal Page is rendered when
all the ADF Bounded Task Flows in the Page has executed. Use an
ADF Task Flow Template for adding a “Fake” initial activity which
will trigger a navigation to the first view activity of the Task Flow.
• Panel Tabbed: If you have ADF Bounded Task Flows in separate
tabs within a Panel Tabbed. Add an activation condition to each
Task Flow. It will only execute the Task Flow that is rendered
currently (instead of executing all).
• Re-design: Consider to re-design your navigation and pages. It is
better to have a Navigation / Buttons to access information quick
than wait multiple seconds to display everything in a single page.
• Try to do not place more than 8 ADF Task Flows in a
single Oracle WebCenter Portal Page.
• Consider the possibility of developing also ADF Portlets
instead of ADF Bounded Task Flows. They are executed
in a separate JVM.

Portlets and MDS Cache Size
Tips
• Remember that for JSR-286 Portlets there are two mechanisms for caching:
• Expiry-based caching: This option is more suitable for Portlets
displaying static data.
• Validation-based caching: This option is more suitable for dynamic
data. It is responsibility of the developer to check if the view must be
re-generated.
• In Oracle WebCenter Portal 12c, JSR-286 Cached Responses are stored in
Coherence. This configuration can be override if needed ☺.
• In earlier versions of Oracle WebCenter Portal tuning the MDS was a
mandatory task.
Since 11.1.1.8 version of Oracle WebCenter Portal MDS is tuned with the
following settings:
• auto-purge is enabled by default with a TTL of 3600 seconds.
• Cache Size: 100Mb
Tunning Tips:
• Increase the MDS Cache Size to a higher value if you are
planning to have multiple Portals with multiple pages.
• Do not discard the usage of Portlets ☺. I find always the
WC_Portlet JVM lonely wasting resources!

WebCenter Portal – Content Overview
• In Oracle WebCenter Portal 12c it has been simplified the integration between Portal – Content.
• Now it as been reduced to two main pillars.
Content Manager Task Flow Content Presenter

WCP – WCC: Common
Bottlenecks
• Forget to tune Oracle WebCenter Portal – Oracle WebCenter
Content connection. (Focused in this section)
• Not using Site Studio / Content Presenter Integration
properly:
• Bad design and development of Content Presenter
Templates.
• Do not enabling Coherence for Caching.
• Do not enabling Sweeper Mode ON.
• Do not using Image Renditions.
• Do not use Browser Caching for the Images served in
Content Presenter.
• Oracle WebCenter Content default settings are not suitable to
production environment. Default settings easily can produce
(Later in the WebCenter Content chapter):
• An insane amount of SQL Statements producing a huge
bottleneck against the Database or just killint it ☺.
• An overhead against LDAP consulting user information.
• Enabling WebCenter Content Components that are not in use
and execute heavy filters on behind ☺. (Later in the
WebCenter Content chapter)
• Cluster of Oracle WebCenter Content using a very poor NFS
(Network File System) ☺.

WCP – WCC:
Connection Settings
• Configure Cache Details:
• Cache Invalidation Interval is used by
WebCenter Portal for polling and checking if
any of the Cached Content has changed to
invalidate it.
• Maximum Cached Document in Bytes: The
maximum cacheable size for the binary
documents. Larger documents are not
cached.
Tuning Tips: A Cache Invalidation interval of 2
to 5 minutes is more than enough. Adjust the
maximum binary size depending on the
average size of Data Files, Binary Documents
that you will serve accordingly to the JVM
memory assigned ☺.

Content Presenter: How it works
• Content Presenter is the unique mechanism for exposing structured Web Content Data.
• Uses PortalVCR Component which exposes VCR_... IDC Services for consuming the information from the
Content Repository. ☺.
• In a Un-cached / Non-tuned first request the following calls happens:
Content
Presenter
WebCenter
Content
(Portal
VCR)
Get list of available Content Types: VCR_GET_CONTENT_TYPES1
Calculate Content Type: VCR_GET_CONTENT_TYPE2
Calculate Content Type: VCR_GET_CONTENT_TYPEi
i+1 Data File Request: VCR_GET_DOCUMENT_BY_NAME
i+2 Data File Request: VCR_GET_DOCUMENT_BY_NAME

Content Presenter: Enable Coherence
• Always enable Coherence for Content Presenter ☺.
• Default Values of the sample-content-coherence-cache-config.xml are not suitable for a Production Environment.
Tunning Tips:
• ContentBinaryCaches Coherence Cache Schema:
• Only stores the binary data with less size than the configured in WCP-WCC connection will be cached.
• Define how much binary data components we will store.
Consumed Memory = [Size of Binary in WCC Connection] * [Number of Elements defined in Coherence Config
• IT DOES NOT STORE SITE STUDIO DATA FILES!!!
• ContentNodeCaches Coherence Cache Schema:
• Setup this cache schema to use an expiry-delay of 0. It will enable the mechanism of Sweeper ON for Data Files.
• Setup the number of nodes to an 75-80% of the number of Data Files you expect to have.
• IT AVOID UNNECESSARY CALLS TO VCR_GET_DOCUMENT_BY_NAME service
• ContentTypesCaches: Stores the Content Types (Profiles + Region Definition Content Types). Consider to increase
the expiry-delay or make it un-expirable.
• IT AVOID UNNECESSARY CALLS TO VCR_GET_CONTENT_TYPES / VCR_GET_CONTENT_TYPE calls.
• If your license of Coherence accepts it… DISTRIBUTE this cache over your cluster ☺.

Content Presenter: Content Types
Tuning Tips:
• VCR_GET_CONTENT_TYPES + VCR_GET_CONTENT_TYPE are execute the following number of calls:
Number of VCR calls = 1 + [Number of Profiles] + [Number of Region Definition]
For example: 35 Profiles + 10 Region Definition = 45 VCR_GET_CONTENT_TYPE calls!!!
What can we do? Cry is not an option!!! ☺. Let’s be strong and improve it!
• Enable Content Type Lazy Loading by adding to WC_Portal managed servers the following JVM Parameter.
-DContentTypeLazyCaching=true
• Really consider to setup the ContentTypesCaches to do not expire Content Types or put a longer expiry-delay.
Warning:
In 12c we have been identified a BUG which makes VCR calls to take crazy times (VCR_GET_CONTENT_TYPES can be >
30 seconds)!. In BUGs section you will find the Patch associated ☺.

Content Presenter: Image Rendering I
• Image Rendering in Content Presenter is one of the most common bottlenecks…
Avoid using Native Rendition of huge sizes and re-sizing its height and width with CSS.
• Always configure Inbound Refinery to produce Image Renditions of different sizes / formats to be used in
your Custom Content Presenter Templates.
• Use the Thumbnail rendition for small renderings.
• Use the Web rendition for bigger renderings.
• Create your own renditions to full fill your Template needs different sizes / formats.
• Use EL Expressions to access to the specific rendition:
• Image Node:
#{node.renditionsMap[‘nameOfRendition:url']
• Image Element Definition within a Region Definition:
#{node.propertyMap['regionDefinitionName:elementName/Rendition:renditionName'].asTextHtml}
Tip:
• Avoid to use URLs using the /wccproxy servlet for rendering images. It download the Native File!.

Content Presenter: Image Rendering II
• Out-of-the-box the URLs generated for the images are an IDC Service called GET_FILE.
Images served by GET_FILE cannot be cached by the browser!.
For example: /cs/idcplg?IdcService=GET_FILE&dDocName=…&rendition….
• In 11.1.1.5.4 was introduced a configuration file called linkCaching.properties in WebCenter Portal for
supress GET_FILE and turn the URLs into WebLayout URLs that can be cacheable.
• oracle.webcenter.content.integration.spi.ucm.linkConversion=true
• oracle.webcenter.content.integration.spi.ucm.suppressGetFileUrl=on
For example: /cs/groups/public/documents/document/mtu2/otm1/~edisp/ucm_00001.jpg
• However since 11.1.1.8.8 all “/cs” responses contains a Cache Control: no-cache, no-store header due to a
security issue with SSL caching.

Content Presenter: Image Rendering III
Tip:
Override certain WebLayout path responses in OHS to make the Cache-Control / Pragma private
Use a specific security group only for images to differentiate the WebLayout root URL.
<Location /cs/groups/myimages/>
Header set Pragma private
Header unset Last-Modified
Header unset Expires
Header set Cache-Control "max-age=2592000, public“
…. [ Deflate Options] ….
</Location>

WebCenter Portal + OHS DEFLATE
Configure the DEFLATE module of Oracle HTTP Server to compress the size of the HTTP responses.
<IfModule mod_deflate.c>
SetOutputFilter DEFLATE
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE image/svg+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/atom+xml
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE text/html
SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png)$ no-gzip dont-vary
SetEnvIfNoCase Request_URI .(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary
SetEnvIfNoCase Request_URI .(?:pdf|doc?x|ppt?x|xls?x)$ no-gzip dont-vary
SetEnvIfNoCase Request_URI .avi$ no-gzip dont-vary
SetEnvIfNoCase Request_URI .mov$ no-gzip dont-vary
SetEnvIfNoCase Request_URI .mp3$ no-gzip dont-vary
SetEnvIfNoCase Request_URI .mp4$ no-gzip dont-vary
</IfModule>

CM Task Flow: Enhance
Inline Preview I
• Content Manager Task Flow is the
new component that has merged
all the legacy 11g Task Flows for
interacting with documentation.
• Content Manager Task Flow is just a
wrapper of the known and existing
Oracle WebCenter Content ADF UI.
• The more common issue reported
with Content Manager Task Flow is:
Slow Inline Preview of Docuemnts.

CM Task Flow: Enhance
Inline Preview II
• When a document is uploaded it is
converted to PDF if Inbound Refinery is
setup.
• When the document is requested.
There is a /imaging Servlet which will
end in a call to DYNAMIC CONVERTER
for generating the HTML rendition for
the preview.
• So it generates and cache the HTML
rendition on demand!.
WebCenter
Portal
Upload Document or
Media File
WebCenter
Content
Upload
Inbound
Refinery
Converted
Convert
Convert to different
Formats
Renditions
Document Converted
Released
OIT (Oracle
Outside In
Technology)
Transform
Display Content
HTMLRenditions
HTML Rendition Generated, if
Dynamic Converter Enabled

CM Task Flow: Enhance Inline Preview III
• Dynamic Converter can be configured for
producing the HTML rendition when the
document is Checked-In / indexed.
• It also offers other options such as Re-
evaluation during re-indexing or if a change on
a metadata should fire a conversion as well.
Tip:
• Configure Dynamic Converter to produce the
HTML renditions of the desired document
formats when Check-In.
• Dynamic Converter / OIT takes time to
produce the conversions… The client must be
patient! ☺
• Check – Uncheck Re-evaluate conversions if
you are planning for a full Re-index build. It
can delay your indexing process.

Recommended Patches:
Relevant Patches that affects Performance in Oracle WebCenter Portal.
• Bug 25528107 - Slow performance from VCR_GET_CONTENT_TYPES when IPM components are enabled.
• Bug 24743966 : stuck thread at org.eclipse.persistence.indirection.IndirectMap.get
Tip:
Oracle My Support has a specialized page for Oracle WebCenter Portal for highlighting the most important patches which
affects Oracle WebCenter Portal. There are important patches for Oracle WebLogic and Oracle ADF which affects Oracle
WebCenter Portal Peformance.

Oracle WebCenter Content
Configuration, Components and tips

Overview
• Default configuration of Oracle WebCenter Content is not optimized for production environment.
• There are many things to take into consideration when tuning an Oracle WebCenter Content platform.
• Components enabled / disabled. Some components are known to degrade the performance.
Are you really using them?
Are them mandatory because of Oracle Documentation?
Did you challenge Oracle Documentation to see if they are really mandatory? ☺
• Miss configuration of Components in config.cfg which affects the performance of certain components.
This misconfiguration can lead easily in:
• LDAP Bottlenecks
• Database Bottlenecks
• Slow Searching.
• WebCenter Content Indexes must be optimized periodically.
• WebCenter Content in Cluster should run in an optimize NFS.

How to check bottleneck: Core Trace levels
• Oracle WebCenter Content traces gives a very good traceability of the Components and actions happening on behind.
• Tip: Externalize your intradoc logs to write in the local storage of the machine (not in the NFS ☺).
• The best common traces to enable for checking bottlenecks are
Trace Description What can you find
requestaudit Time expend on execution of WebCenter Content Services It can give an idea if certain services are
executing slow
systemdatabase Database SQL operations and execution times fired by WebCenter
Content services
It can give an idea if there is any slow SQL Query
or bottleneck in the database
fileaccess To track which files are being locked and used It can give an idea about problems with the File
System
services Traceability of filters executed by each WebCenter Content Service It can give an idea of all the filters call by a
specific service. May it can execute excessive
due to multiple Components has been activated
in the Content Repository
searchcache If the Search Cache is enabled. Track what is served from the
Cache
*We will talk about UseSearchCache separately
userstorage, jps Operations against WebLogic Server to retrieve user / security
information
It can give an idea if there is an overhead or
bottleneck with the LDAP

Bottleneck: Database
• We have identified slow SQL Queries or bad performance against the database using systemdatabase trace.
What now?
• Ask your DBA to produce an AWR report to confirm that there are slow queries.
• Use SQL Developer for executing “Explain Plan” to analyse in details the slow queris.
• Check your WeCenter Content index fragmentation by calling ctx_report.index_stats PL/SQL function
• Optimize and defragment your WebCenter Content Indexes by calling: ctx_ddl.optimize_index PL/SQL
function
• Tips:
• Mark custom metadata as “Searchable” to be used as index. It will improve certain search operations
• Configure a PL/SQL job to optimize indexes each week during out of business hours.

Bottleneck: NFS and
Bonnie++
• Database responses OK… suspicious… NFS issue?!.
• fileaccess traces shows issues against the UCM
instance folder where the WebLayout is located.
What to do in this case?
• Perform a proper NFS testing using powerful tools
such as Bonnie++.
Bonnie++ will perform a synchronous /
asynchronous and all kind of write / read
possibilities against your NFS producing a very
good report.
• If your O.S accepts it try to mount it using versions
of NFSv4 etc…
DD Linux Command for checking Read / Write Speed
Bonnie++ doing a complete NFS testing
vs
Tips:
• Perform your testing by using different mount options
• Reduce the rsize and wsize if your bandwidth is not too
fast.

Components
The following components are suitable for creating performance problems. Take care with them!.
Component Description Warning
AutoSuggest* As Content Manager Task Flow is a wrapper of WCC ADF UI.
It provides type ahead suggestion in the CM Task Flow UI.
The AutoSuggest indexing produces heavy load
on the DB and also impacts on the Automatic
Update Cycle.
LinkManager The Link Manager component evaluates, filters, and parses the
URL links of indexed content items before extracting them for
storage in a database table. Documentation says that is
mandatory for enabling Site Studio Integration.
You can disable it if you face indexing
performance issues. It will not affect on how
Content Presenter works (as far as I know!).
ContentTracker Provides statistics and reports about system / content usage Disable it if you are not planning to use it ☺.
*: AutoSuggest has more slides! ☺.

Config Variables: AutoSuggest I
Variable Description Default
Value
Suggestion
AutoSuggesterPerGramTermsProcessedLimit AutoSuggesterPerGramTermsProcessedLimit can be
used to set a max limit on the number of terms a gram
can process to avoid scenarios which result in
processing terms for the entire index when no
matches are found for a query
2000 Around 500 should not affect the
quality of the results
AutoSuggestIndexInterval This sets the indexing interval in seconds for auto
suggest index which adds / removes entries from the
index using the data sources setup. By default it is set
to 60.(seconds)
Modifying this setting will delay the indexing of
information found in the type ahead fields
60 (1 minute) 1 minute will destroy your DB REDO
log in just seconds.
Consider to increase it
AutoSuggesterThreadCount Number of threads used for getting suggestions 2 Increase if you have enough CPU.
AutoSuggestIndexShortcuts Indicates if Shortcuts needs to be indexed 1 (true) No relevant for performance
AutoSuggestMinGramLength Minimum size of the gram length to index 2 Consider to setup at the same as the
Maximum (3) to manage the size of
the CacheStore table.
AutoSuggestMaxGramLength Maximum size of the gram length to index 3
AutoSuggestProximityCutOff Filter out the terms based on their proximity score 0.1 No relevant for performance
EnableAutoSuggest It’s the way to turn ON / OFF to index also in
suggested index
1 (enabled) * (next slide an amazing
recommendation)

Config Variables: AutoSuggest II
AutoSuggest component really generates an overhead traffic to Database and can fill your REDOLog
Use the following recommendations to setup it properly
• Consider to increase the AutoSuggestIndexInterval to bigger values.
• Tune AutoSuggestMinGramLength, AutoSuggestMaxGramLength as suggested to reduce the CacheStore Table size
Tips:
• Tunning AutoSuggest component requires multiple rounds to be tuned properly .
• Enable autosuggest, idccache and systemdatabase trace level to check the AutoSuggest activity.
• Disable AutoSuggest if you are not planning to use it ☺

Config Variables: Search
Value
Suggestion
OracleTextDisableSearchSnippet WebCenter Content can retrieve document snippets
as part of search results to show the occurrence of
search terms in context of their usage
false If you are not planning to search over
terms that can be inside of the native
document then you can disable it. It
will boost the Search Performance.
MaxSearchConnections Maximum simultaneous Searches hold by Oracle
WebCenter Content
5 Consider to increase if you have
enough resources
MaxResults If a Search does not specify how many content to
retrieve then MaxResults count is retrieved
200 Contingency about the amount of data
gathered.
Setup to a proper value where the
customer is satisfied with.
E.g.: If you make an empty search, it
will return the latest 200 updated
content.
CachedResultRowCount Size of the search cache 40000 No need to tune
SearchCacheCleanerInterval TTL between cache cleanup attempts 120 (seconds) No need to tune
SearchCacheMaxItemAgeInMinutes Set the maximum age of an item in cache 240 (minutes) 4 hours… ☺ -> Reduce them to 10
minutes maybe?
UseSearchCache* Enable / Disable WebCenter Content Search Cache What to suggest here?* Depending on
the WCP release version this is
BUGGED or NOT.
Content Presenter CMIS Queries
returns inconsistent data if this cache
is enabled.
*Discuss about UseSearchCache with the amazing Audience ☺

Config Variables: LDAP and User Information
Value
Suggestion
UserCacheTimeout For how long user information will be cached in Oracle
WebCenter Content.
60000
(milliseonds)
Only holds for 1 minute the user
information.
Increase this value if you are not
expecting to update user information
quite often.
3600000 (1 hour) is a nice value ☺
DoNotQueryLDAPForEmail Avoid overhead of LDAPs Lookups in case of the user
email in case of it is not present in the User Cache or
User table.
False True in case of no need to refresh or
get Email address from LDAP.
In case of False, make sure your LDAP
Provider Query is optimised and users
has an email address associated.

Config Variables: Core + Renditions
Value
Suggestion
DisableSharedCacheChecking Disable the poller of Oracle WebCenter Content for
checking updates on its componets.
True From 12c it is disable by default which
is the recommended value for
production environments.
RenditionListExportedForStaticAccess By default, renditions are compressed in zip and
stored in the WebLayout. To avoid unzip operations
when accessing to the different image renditions by
the applications then setup this property
Preview|Nativ
e|Thumbnail|
Web
Add to the list all the renditions used
by WebCenter Portal Content
Presenter

WebLogic
Security Providers, Data Sources, Policy Store

Overview
There are three important pillars to tune in WebLogic Application Level:
• Security Providers: The LDAP connections must be setup properly to avoid a bottlenecks and slow LDAP
Queries.
• JDBC Data Sources: The default configuration maybe is not suitable for the amount of concurrent users of
the platform. In addition, they can be tuned ☺.
• Policy and Identity Store:
• Policy Store: Luckily in 12c the Policy Store is Out-of-the-box in Database. In addition, multiple of the most common tunings are
already applied in this version.
• Identity Store: In case of the Identity Store is an Active Directory or OVD or other LDAPs then it can be configure some tuning tweaks
in the jps-config.xml file

Security Providers: Connection Pool
Setting Description Default
Value
Recommended
Value
Connection Pool Size The LDAP connection pool size 6 Adjust to the maximum
connections expected.
6 is a very low value
Timeout The maximum time in seconds
to wait for the connection to
the LDAP server to be
established
0 60 (seconds)
Connection Retry Limit Number of re-tries 1 1
Results Time Limit The maximum number of
milliseconds for the LDAP
server to wait for results before
timing out
0 1000 (milliseconds)
Keep Alive Enable Specifies whether to prevent
LDAP connections from timing
out
False True

Security Providers: User Cache
Value
Recommended
Value
Cache Enable Specifies whether a cache is
used with the LDAP server
True True
Cache Size The size of the cache (in
kilobytes) that is used with the
LDAP server
32 3200
Cache TTL The time-to-live of the cache
(in seconds) that is used with
the LDAP serve
60 21600

Security Providers: Groups Cache
Value
Recommended
Value
Enable Group Membership
Lookup Hierarchy Caching
Boolean value that indicates
whether group membership
hierarchies found during
recursive membership lookup
will be cached
True True
Max Group Hierarchies in
Cache
The maximum size of the LRU
cache for holding group
membership hierarchies if
caching is enabled
100 1024
Group Hierarchy Cache TTL The time-to-live of the cache
(in seconds) that is used with
the LDAP serve
60 21600

Security Providers: LDAP Lookup
Setting Description Recommended
Value
User Base DN The base distinguished name
(DN) of the tree in the LDAP
directory that contains users
Understand properly
your LDAP tree. Maybe
you can avoid using
root if your users are
not under it ☺.
User from Name Filter If the attribute (user object
class) is not specified (that is,
if the attribute is null or
empty), a default search filter
is created based on the user
schema
People usually use
LDAP, E.g. in AD such as
(&(sAMAccountName=
%u)(objectclass=user))
These queries can
improved in case of
searching over specific
folders
Group Membership
Searching
Specifies whether group
searches into nested groups
are unlimited, limited or off
Limited
Max Group Membership
Searching
Specifies how many levels of
group membership can be
searched
Depends on number of
nested groups

Policy Store: Tuning Guide
• In 12c version all Policy Store common JVM
tuning parameters (such as rolemember
warmup) are now setup by default.
• Anyway double check the following tuning
recommendations for Policy Store (PDP
settings) which can be made through
Enterprise Manager Console or editing jps-
config.xml file
Setting Description Recommended
Value
oracle.security.jps.policysto
re.rolemember.cache.warm
up.enable
This property controls the way
the ApplicationRole
membership cache is created.
If set to True, the cache is
created at server startup;
otherwise, it is created on
demand (lazy loading).
By default True in 12c.
If you face slow login
performance double
check that it is Enabled
by default ☺
oracle.security.jps.policysto
re.policy.cache.size
The size of the permission
cache. If you cache all policies,
then you can set this value to
the total number of grants.
The Oracle
recommendation is to 5
times of expected
number of Portals. The
default values is 1000
which is high enugh
Tip:
Tuning JVM Parameters related to Policy Store are already configured in 12c. Have a look into the Managed
Server JVM Startup Parameters

Identity Store: Tuning Guide
Depending on the LDAP configured as Identity Store. There are some tuning that can be added in
the jps-config.xml depending on the LDAP configured.
For example for Active Directory:
<serviceInstance provider="idstore.ldap.provider" name="idstore.ldap">
<property value="oracle.security.jps.wls.internal.idstore.WlsLdapIdStoreConfigProvider" name="idstore.config.provider"/>
<property value="oracle.security.idm.providers.stdldap.JNDIPool" name="CONNECTION_POOL_CLASS"/>
<property name="PROPERTY_ATTRIBUTE_MAPPING"
value="WIRELESS_ACCT_NUMBER=mobile:MIDDLE_NAME=middlename:MAIDEN_NAME=sn:DATE_OF_HIRE=pwdLastSet:NAME_SUFFIX=generatio
nqualifier:DATE_OF_BIRTH=pwdLastSet:DEFAULT_GROUP=primaryGroupID" />
<property value="sAMAccountName" name="username.attr"/>
<property value="sAMAccountName" name="user.login.attr"/>
</serviceInstance>
Tip:
Check Oracle Documentation to find your specific LDAP – Identity Store tuning ☺

JDBC Data Source Tuning Guide
Oracle WebCenter Portal Tuning guide recommends:
• Increase the Initial Capacity of the pool size at least till 10. it will maintain always a pool of 10 open without losing time on
opening the first connections.
• Increase the Max Capacity of the pool to 50 or more. Depending on the number of concurrent users.
• Shrink value to 0 can increase the performance in production. By disabling Shrink frequency you will not allow waits
before shrinking a connection pool that has incrementally increased to meet demand.
Out of Oracle WebCenter Portal recommendations also take a look into the following properties:
• Pinned-to-Thread vs Shrink: Pinned-to-Thread is another option (with lot of care and WARNINGs) for increasing the
performance. However is not supported for Oracle RAC.
Note: Shrink setting is ignored if Pinned-to-Thread is checked.
• The Statement Cache Size attribute determines the total number of prepared and callable statements to cache for each
connection in each instance of the data source. Initially is set to 10.
This consume lot of memory, be careful and check Oracle Documentation to properly setup a size ☺.

Java and JVM
Entropy, JVM Memory and Garbage Collector

About Java JVM: Overview
• Tuning the JVM always has been a very HOT topic of discussion.
• How big has to be the Heap Size?
• Setting up the Minimum = Maximum Heap Size is a performance boost?
• Which Garbage Collector should I use?
• What is the Entropy in Linux? Why it affects to Java?
• Adjusting the proper JVM parameters is an exercise of setting up, load testing, check metrics with jvisualvm,
JConsole, Java Mission Control or your favourite diagnostic tool.

About Java JVM: Entropy
• Being a real Full Stack Developer gives you the power to understand that sometimes the performance can be
degrade by external factors to Java.
• What is Entropy in Linux? Entropy is the measure of the random numbers available from /dev/urandom, and
if you run out, you can’t make SSL connections.
• How can I know that I am running a low Entropy?
• Is your WebLogic Servers starting very slow ☺?.
• By executing cat /proc/sys/kernel/random/entropy_avail
• If you have an output like 100-200 you are in trouble!
• Install rng-tools or use other tuning mechanisms to improve the Entropy of your Linux! ☺.
More information: http://danielmerchanoracle.blogspot.nl/2015/11/wcp-1221-installation-ii-oracle-jdk-8.html

About Java JVM: Memory
• Java 7: Perm = Memory in the JVM
• Assign the –Xms and –Xmx memory accordingly to the real consumption of memory of your application
• Assign enough space for –XX:PermSize and –XX:MaxPermSize to do not find the lovely OutOfMemory ☺
• A typical recommendation by Oracle was to setup –Xms and –Xmx to the same value.
“In production environments, set the minimum heap size and the maximum heap size to the same value to prevent wasting VM resources used to constantly grow and shrink the
heap”
• Java 8: Good bye PermSize (OutOfMemory). Hello Metaspace and hello OutofRAM ☺
• Assign the –Xms and –Xmx memory accordingly to the real consumption of your application.
• Always limit the Metaspace by using –XX:MaxMetaspaceSize
• There are discussions if still makes sense to setup –Xms and –Xmx to the same value.
• Java 9: Experimenting with new possibilities like the memory will be adjusted automatically depending on
the memory and resource available ☺.
Tip:
• Personal tip. Since Java 8 I use to setup –Xmx to x2 of the –Xms value

About Java JVM: Garbage Collector
Serial vs Paralell vs CMS vs G1
• Java 7 and Java 8 uses ParallelGC by default.
• Depending on the nature of the Application, the
Heap Size and CPU resources choose for one of the
Garbage Collectors.
• Check Garbage Collector Pause Times by activating
the GC log file –XX:loggc=/tmp/gc.log
• If you find multiple Full GC taking long time
probably your will have performance issues ☺.
• G1GC has been introduced in latest versions of
Java 7 in experimental mode.
• G1GC works very well as it focus on limiting GC
pauses.

Questions?
Share your
experience ☺

Contact
Daniel Merchán García
Founder / CEO / Architect / Developer / Dreamer
Magic Pigeon Ltd
Website: https://magicpigeon.com
Blog: http://danielmerchanoracle.blogspot.co.uk
Email: daniel.merchan@magicpigeon.com
Twitter: https://twitter.com/dmerchang
LinkedIn: https://www.linkedin.com/in/danielmerchangarcia/
Co-Author of
Beginning Oracle WebCenter Portal 12c Book

NLOUG 2017- Oracle WebCenter Portal 12c Performance

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