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在同一机器中运行多个Tomcat时，如果不修改server.xml的端口参数，会出现端口冲突使得Tomcat异常；Tomcat默认配置中，JAVA_OPTS不会设置太大，一般需要在catalina.sh中增加一行配置来加大该参数值。
目录
1.Server.xml配置
2.Catalina.sh配置
总结
1.Server.xml配置
需要改动的端口为：Server标签、HTTP的Connector标签和AJP的Connector标签。
xml如下：
<?xml version="1.0" encoding="UTF-8"?><Server port="8001" shutdown="SHUTDOWN"><Listener className="org.apache.catalina.startup.VersionLoggerListener" /><Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" /><Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" /><Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /><Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" /><!-- Global JNDI resourcesDocumentation at /docs/jndi-resources-howto.html--><GlobalNamingResources><!-- Editable user database that can also be used byUserDatabaseRealm to authenticate users--><Resource name="UserDatabase" auth="Container"type="org.apache.catalina.UserDatabase"description="User database that can be updated and saved"factory="org.apache.catalina.users.MemoryUserDatabaseFactory"pathname="conf/tomcat-users.xml" /></GlobalNamingResources><Service name="Catalina"><Connector port="8088" protocol="HTTP/1.1"connectionTimeout="20000"redirectPort="8443" /><!-- Define an AJP 1.3 Connector on port 8009 --><Connector protocol="AJP/1.3"address="::1"port="8009"redirectPort="8443" /><Engine name="Catalina" defaultHost="localhost"><Realm className="org.apache.catalina.realm.LockOutRealm"><Realm className="org.apache.catalina.realm.UserDatabaseRealm"resourceName="UserDatabase"/></Realm><Host name="localhost" appBase="webapps"unpackWARs="true" autoDeploy="true"><Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"prefix="localhost_access_log" suffix=".txt"pattern="%h %l %u %t "%r" %s %b" /></Host></Engine></Service>
</Server>
2.Catalina.sh配置
在sh文件首行加上JAVA_OPTS="-Xms4096M -Xmx8192M"这一行。
如下：
总结
本文介绍了Tomcat的一些使用注意事项，记录一下。