Oracle as 10gR3 集群及其管理
Agenda10gR3 Cluster new features
10gR3 Cluster change
10gR3 Cluster concept
10gR3 Cluster configuration
10gR3 Cluster administration
10gR3 Cluster deploy architecture
10gR3 Cluster performance and tips New features
Database based replication
More tunable replication policy
onSetAttribute, onRequestEnd, onShutdown
Wan-wide replication
Deploy clustered and non-clustered application simultaneously
More Dynamic
Dynamic Topologies,Dynamic Routing Relationships,Mount Point Discovery Change
Islands No Longer Supported
loadbalancer.jar No Longer Used
<cluster-config> of server.xml Deprecated
<cluster-island> of <web-site> Deprecated Concept
Session replication(multicast,peer to peer)
Dynamic discovery
Transparent failover
Dynamic routing
Mod_oc4j
OPMN Dynamic Routing
mod_oc4j routes requests from Web Server to OC4J instances where application is running
Previously used a static mapping file which required restart to take affect
OC4J now announces mappings
mod_oc4j dynamically adds mappings to its route table
Removes system down time
Reduces maintenance MOD_OC4J
Route requests from Web Server to OC4J instances
Route to the first served server if available
Many load balance policies
Dynamic maintain oc4j mapping route
Route to specific OC4J (routing id) Cluster configuration-topology
OPMN
ORACLE_HOME/opmn/bin/opmnctl config topology update discover=*225.0.0.1:8001
ORACLE_HOME/opmn/bin/opmnctl reload
One Step
opmnassociate *225.0.0.1:8001 -restart Cluster configuration-session replication
Modify $OC4J_HOME/config/application.xml or oraion_application.xml
Add following :
<cluster allow-colocation="false" write-quota="1">
<replication-policy trigger="onRequestEnd" scope="modifiedAttributes"/>
<protocol>
<multicast ip="225.130.0.0" port="45577" bind-addr="226.83.24.10"/>
</protocol>
</cluster>
Modify web.xml add
<distributable/> Modify $OC4J_HOME/config/application.xml or oraion_application.xml
Add following :
<cluster allow-colocation="false" write-quota="1">
<replication-policy trigger="onRequestEnd" scope="modifiedAttributes"/>
<protocol>
<peer>
<opmn-discovery />
</peer>
</protocol>
</cluster>
Modify web.xml add
<distributable/> Modify $OC4J_HOME/config/application.xml or oraion_application.xml
Add following :
<cluster allow-colocation="false" write-quota="1">
<replication-policy trigger="onRequestEnd" scope="modifiedAttributes"/>
<protocol>
<peer start-port="7900" range="10" timeout="6000">
<node host="www2.company.com" port="7900" />
</peer>
</protocol>
</cluster>
Modify web.xml add
<distributable/> Modify $OC4J_HOME/config/application.xml or oraion_application.xml
Add following :
<cluster allow-colocation="false" write-quota="1">
<replication-policy trigger="onRequestEnd" scope="modifiedAttributes"/>
<protocol>
<database data-source="jdbc/MyOracleDS"/>
</protocol>
</cluster>
OC4J_HTTP_SESSION (auto create)
OC4J_HTTP_SESSION_VALUE
OC4J_EJB_SESSION Test jsp
<% String user_count=(String)session.getAttribute("user_count";
if(user_count==null)
{
session.setAttribute("user_count","1";
out.print("null";
System.out.println("null";
}
else
{
System.out.println("before "+user_count);
user_count=Integer.parseInt(user_count)+1+"";
System.out.println("after add "+user_count);
session.setAttribute("user_count",user_count);
out.print(user_count);
}%> Test
Open the test page ,check which oc4j serve
Restart the first serve oc4j
Reclick the test page on the first window,session should replicated to the second oc4j Administration
Application Server Control
opmnctl
admin_client.jar
admin.jar(standalone only) OPMN
Oracle Notification Server(ONS)
Receives notification from other ONS
Send notification to other ONS
Oracle Process Manager(PM)
Start,stop,restart managed process(oc4j,OHS..)
Monitor managed process
Automatic restart managed process
Two process,first start second ,second manage managed process admin_client.jar
Deploy,undeploy application,web module,ejb module
Incrementally update a deployed EJB module
Create, modify, or remove shared libraries for an application
Start, restart, or stop applications
Restart or stop an OC4J instance or group of instances
Add, test, and remove data sources
Add and remove JMS connection pools admin_client.jar
[oas1013@test001 home]$ java -jar admin_client.jar
Usage:
java -jar admin_client.jar <connection_uri> <username> <password> <command>
Valid commands are:
-shutdown
-restart
-deploy -file <filename> -deploymentName <appname> [options]
-redeploy -file <filename> -deploymentName <appname> [options]
-undeploy <appname> [options]
-bindWebApp -appName <appname> -webModuleName <name> [options]
-bindAllWebApps -appName <appname> [options]
-start <appname>
-stop <appname>
-updateEJBModule -appName <appname> -ejbModuleName <name> -file <path>
-listSharedLibraries
-describeSharedLibrary -name <name> -version <version>
-publishSharedLibrary -name <name> -version <version> [options]
-modifySharedLibrary -name <name> -version <version> [options]
-removeSharedLibrary -name <name> -version <version>
-validateURI Performance monitor
DMS Tools
command line tool for report performance metrics
AggreSpy
web-based servlet for report performance metrics
Application server control Performance monitor -dmstool
[oas1013@test001 home]$ dmstool
Usage:
dmstool -help
dmstool -list [-table] [-delimitor <delimitor>]
[-address <[opmn://]host[ort][path],...>]
dmstool [-interval <secs>] [-count <num>]
[-address <[opmn://]host[ort][path],...>]
[-delimitor <delimitor>] <metric> <metric> ...
dmstool -table [-interval <secs>] [-count <num>]
[-address <[opmn://]host[ort][path],...>]
[<table> <table> ...]
dmstool -reset [-table] <metric|table> <metric|table> ...
dmstool -dump [-interval <secs>] [-count <num>]
[-address <[opmn://]host[ort][path],...>] [format=xml|<query>] [oas1013@test001 OracleAS_1]$ dmstool -table -list
oc4j_web_module
oc4j_workManagementPool
ohs_child
ohs_module
ohs_ossl
ohs_responses [oas1013@test001 OracleAS_1]$ dmstool -table ohs_server
Thu Jul 19 06:21:34 CST 2007
ohs_server
Host: test001
Name: OHS
Parent: /
Process: HTTP_Server:OHS:3349:6100
connection.avg: 156492 usecs
connection.completed: 38583 ops
connection.maxTime: 96091863 usecs
connection.minTime: 1679 usecs
request.avg: 13426 usecs
request.completed: 38952 ops
request.maxTime: 65148495 usecs
request.minTime: 666 usecs
request.time: 523002495 usecs Performance monitor - AggreSpy
Config:
$ORACLE_HOME/Apache/Apache/conf/dms.conf
Redirect /dms0/AggreSpy [url]http://127.0.0.1:7200/dmsoc4j/AggreSpy[/url]
# DMS VirtualHost for access and logging control
Listen 127.0.0.1:7200
OpmnHostPort [url]http://127.0.0.1:7200[/url]
<VirtualHost 127.0.0.1:7200>
ServerName 127.0.0.1
TransferLog /dev/null Config:
Redirect /dms0/AggreSpy [url]http://10.64.3.148:7201/dmsoc4j/AggreSpy[/url]
# DMS VirtualHost for access and logging control
Listen 10.64.3.148:7201
OpmnHostPort [url]http://10.64.3.148:7201[/url]
<VirtualHost 10.64.3.148:7201>
ServerName 10.64.3.148
TransferLog /dev/null Performance-tuning
Don’t store large objects in session
Don’t store many objects in session
limit session replication nodes
Select right load balance policy
Set right heap size
Set right GC policy
Pool JDBC Connection Limit session replication nodes
<cluster allow-colocation="false" write-quota="1">
<replication-policy trigger="onRequestEnd" scope="modifiedAttributes"/>
<protocol>
<multicast ip="225.130.0.0" port="45577" bind-addr="226.83.24.10"/>
</protocol>
</cluster> Choose right load balance policy
mod_oc4j.xml
Random
Round Robin (default)
Random with Local Affinity
Round Robin with Local Affinity
Random using Routing Weight
Round Robin using Routing Weight
Metric Based
Metric Based with Local Affinity Set right heap size and gc policy
-server -Xms1500m -Xmx1500m -XX:NewSize=700m -XX:MaxNewSize=700m -XX:SurvivorRatio=8 -XX:MaxPermSize=256m -XX:+UseParallelGC -XX:ParallelGCThreads=4 -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+AggressiveHeap
-verbose:gc -Xloggc:gc.log Jdk 1.5 new monitor tools
Jinfo obtain configuration information
Jmap obtain memory map information,
Jstack obtain java and native stack information
Jdb debug jvm Jdk 1.5 new monitor tools
Jconsole provide information on performance and resource consumption
Jstat provide information on performance and resource consumption
Heap Analysis Tool useful for memory leaks
HPROF Profiler report cpu usage,heap statistics OC4J performance-thread pool
System not change,system use only
http Serves HTTP and AJP requests and rmi
rmi request Serves rmi request
rmi connection handles rmi connection
Custom serves user applications OC4J performance-thread pool
Server.xml
<thread-pool
name="http"
min="40"
max="40"
queue="2560"
keepAlive="-1"
stackSize="0"/> OHS performance
MaxClients
Oc4jCacheSize
MaxRequestsPerChild
KeepAlive Tips-route to specific oc4j
<ias-instance id="test.test001.picclife.cn" name="test.test001.picclife.cn">
<environment>
<variable id="TMP" value="/tmp"/>
</environment>
<module-data>
<category id="start-parameters">
<data id="routing-id" value="g_rt_id"/>
</category>
</module-data> Tips-debug session replication
<ias-component id="MyGroup" status="enabled">
<process-type id="test" module-id="OC4J" status="enabled">
<module-data>
<category id="start-parameters">
<data id="java-options" value="-server -Dhttp.cluster.debug=true -Dhttp.session.debug=true -Djava.security.policy=$ORACLE_HOME/j2ee/test/config/java2.policy -Djava.awt.headless=true -Dhttp.webdir.enable=false"/> Tips-debug session replication
Debug session replication
07/07/19 08:00:54 FINE: JGroupHttpSession.beginRequest ClusteredHttpSession.beginRequest()
07/07/19 08:00:54 before 1
07/07/19 08:00:54 after add 2
07/07/19 08:00:54 FINE: JGroupHttpSession.attributeModified attribteModified -- user_count newValue: 2 oldValue 1
07/07/19 08:00:54 FINE: JGroupHttpSession.endRequest ClusteredHttpSession.endRequest(), accessed=true, modified=true
07/07/19 08:00:58 FINEST: Manager.reapReplicas reaped 0 replicated sessions
07/07/19 08:00:58 FINEST: Manager.reapReplicas reaped 0 replicated sessions
07/07/19 08:14:19 FINEST: Manager.reapReplicas reaped 0 replicated sessions
07/07/19 08:14:19 FINEST: AbstractGroup.dispatch dispatching message: ApplyDelta- - 0a40039430d7cea9bc827bf24a13876c98c3c3b60c86
07/07/19 08:14:19 FINEST: SessionReplica.applyDelta Applying put: user_count value: [B@14ea256
07/07/19 08:14:19 FINEST: SessionReplica.applyDelta Applied 1 puts and 0 removes
07/07/19 08:14:50 FINEST: Manager.reapReplicas reaped 0 replicated sessions
07/07/19 08:15:21 FINEST: Manager.reapReplicas reaped 0 replicated sessions Tips-replication flow control
orion-application.xml
<cluster >
<flow-control-policy enabled=true max-bytes
=500000 min-bytes=0 >
</cluster> Tips-synchronization time
Set the same time for all cluster nodes
配置服务器
修改 /etc/ntp.conf
加上需要同步得网段
restrict 10.64.3.0 mask 255.255.255.0
启动ntp
chkconfig ntpd on
/etc/init.d/ntpd start
# vi /etc/ntp/step-tickers
加入一行
pool.ntp.org
这样每次ntpd启动时，会自动连接该国际标准时间服务器；
配置客户端
ntpdate ip_of server
0 3 * * * /usr/sbin/ntpdate 192.168.0.179
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