Oracle as 10gR3 集群及其管理

wzy25

[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

wzy25

Config:
$ORACLE_HOME/Apache/Apache/conf/dms.conf

Redirect /dms0/AggreSpy http://127.0.0.1:7200/dmsoc4j/AggreSpy
# DMS VirtualHost for access and logging control
Listen 127.0.0.1:7200
OpmnHostPort http://127.0.0.1:7200

<VirtualHost 127.0.0.1:7200>
  ServerName 127.0.0.1
  TransferLog /dev/null

wzy25

Config:
Redirect /dms0/AggreSpy http://10.64.3.148:7201/dmsoc4j/AggreSpy

# DMS VirtualHost for access and logging control
Listen 10.64.3.148:7201
OpmnHostPort http://10.64.3.148:7201

<VirtualHost 10.64.3.148:7201>
  ServerName 10.64.3.148
  TransferLog /dev/null

wzy25

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

wzy25

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>

wzy25

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

wzy25

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

wzy25

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

wzy25

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

wzy25

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