鍦╰omcat涓璻edeploy鏃跺嚭鐜皁utofmemory鐨勯敊璇? 鍙互鏈変互涓嬪嚑涓柟闈㈢殑鍘熷洜:
1, 浣跨敤浜唒roxool,鍥犱負proxool鍐呴儴鍖呭惈浜嗕竴涓佺増鏈殑cglib.
2, log4j,鏈濂戒笉鐢?鍙敤common-logging
3, 鑰佺増鏈殑cglib,蹇偣鏇存柊鍒版渶鏂扮増銆?br /> 4, 鏇存柊鍒版渶鏂扮殑hibernate3.2 3銆?
榪欓噷浠omcat鐜涓轟緥錛屽叾瀹僕EB鏈嶅姟鍣ㄥjboss,weblogic絳夋槸鍚屼竴涓亾鐞嗐?/span>
涓銆乯ava.lang.OutOfMemoryError: PermGen space PermGen space鐨勫叏縐版槸Permanent Generation space,鏄寚鍐呭瓨鐨勬案涔呬繚瀛樺尯鍩? 榪欏潡鍐呭瓨涓昏鏄JVM瀛樻斁Class鍜孧eta淇℃伅鐨?Class鍦ㄨLoader鏃跺氨浼氳鏀懼埌PermGen space涓? 瀹冨拰瀛樻斁綾誨疄渚?Instance)鐨凥eap鍖哄煙涓嶅悓,GC(Garbage Collection)涓嶄細鍦ㄤ富紼嬪簭榪愯鏈熷 PermGen space榪涜娓呯悊錛屾墍浠ュ鏋滀綘鐨勫簲鐢ㄤ腑鏈夊緢澶欳LASS鐨勮瘽,灝卞緢鍙兘鍑虹幇PermGen space閿欒, 榪欑閿欒甯歌鍦╳eb鏈嶅姟鍣ㄥJSP榪涜pre compile鐨勬椂鍊欍傚鏋滀綘鐨刉EB APP涓嬮兘鐢ㄤ簡澶ч噺鐨勭涓夋柟jar, 鍏跺ぇ灝忚秴榪囦簡jvm榛樿鐨勫ぇ灝?4M)閭ｄ箞灝變細浜х敓姝ら敊璇俊鎭簡銆?/span>
瑙ｅ喅鏂規硶錛?鎵嬪姩璁劇疆MaxPermSize澶у皬淇敼TOMCAT_HOME/bin/catalina.sh 鍦?#8220;echo "Using CATALINA_BASE: $CATALINA_BASE"”涓婇潰鍔犲叆浠ヤ笅琛岋細 JAVA_OPTS="-server -XX:PermSize=64M -XX:MaxPermSize=128m
寤鴻錛氬皢鐩稿悓鐨勭涓夋柟jar鏂囦歡縐葷疆鍒皌omcat/shared/lib鐩綍涓嬶紝榪欐牱鍙互杈懼埌鍑忓皯jar 鏂囨。閲嶅鍗犵敤鍐呭瓨鐨勭洰鐨勩?/span>
浜屻乯ava.lang.OutOfMemoryError: Java heap space Heap size 璁劇疆 JVM鍫嗙殑璁劇疆鏄寚java紼嬪簭榪愯榪囩▼涓璊VM鍙互璋冮厤浣跨敤鐨勫唴瀛樼┖闂寸殑璁劇疆.JVM鍦ㄥ惎鍔ㄧ殑鏃跺欎細鑷姩璁劇疆Heap size鐨勫鹼紝鍏跺垵濮嬬┖闂?鍗?Xms)鏄墿鐞嗗唴瀛樼殑1/64錛屾渶澶х┖闂?-Xmx)鏄墿鐞嗗唴瀛樼殑1/4銆傚彲浠ュ埄鐢↗VM鎻愪緵鐨?Xmn -Xms -Xmx絳夐夐」鍙繘琛岃緗侶eap size 鐨勫ぇ灝忔槸Young Generation 鍜孴enured Generaion 涔嬪拰銆傛彁紺猴細鍦↗VM涓鏋?8錛呯殑鏃墮棿鏄敤浜嶨C涓斿彲鐢ㄧ殑Heap size 涓嶈凍2錛呯殑鏃跺欏皢鎶涘嚭姝ゅ紓甯鎬俊鎭傛彁紺猴細Heap Size 鏈澶т笉瑕佽秴榪囧彲鐢ㄧ墿鐞嗗唴瀛樼殑80錛咃紝涓鑸殑瑕佸皢-Xms鍜?Xmx閫夐」璁劇疆涓虹浉鍚岋紝鑰?Xmn涓?/4鐨?Xmx鍊箋?
瑙ｅ喅鏂規硶錛氭墜鍔ㄨ緗瓾eap size 淇敼TOMCAT_HOME/bin/catalina.sh 鍦?#8220;echo "Using CATALINA_BASE: $CATALINA_BASE"”涓婇潰鍔犲叆浠ヤ笅琛岋細 JAVA_OPTS="-server -Xms800m -Xmx800m -XX:MaxNewSize=256m"
涓夈佸疄渚嬶紝浠ヤ笅緇欏嚭1G鍐呭瓨鐜涓媕ava jvm 鐨勫弬鏁拌緗弬鑰冿細
JAVA_OPTS="-server -Xms800m -Xmx800m -XX:PermSize=64M -XX:MaxNewSize=256m -XX:MaxPermSize=128m -Djava.awt.headless=true "
鍐呭瓨涓嶈凍 (OutOfMemory) 錛?鐢變簬java 鍫嗘垨鏈湴鍐呭瓨涓殑鍐呭瓨鑰楀敖錛屽簲鐢ㄧ▼搴忔樉紺?#8220;鍐呭瓨涓嶈凍”閿欒銆?br /> 鍐呭瓨娉勬紡錛峧ava 鍫嗘垨鏈湴鍐呭瓨鐨勬寔緇唴瀛樺闀匡紝鏈緇堝皢瀵艱嚧鍐呭瓨涓嶈凍鐘舵併?br /> 璋冭瘯鍐呭瓨娉勬紡鐘舵佺殑鎶鏈笌璋冭瘯鍐呭瓨涓嶈凍鐘舵佺殑鎶鏈浉鍚屻?/span>
Java 鍫?錛?榪欐槸 JVM 鐢ㄦ潵鍒嗛厤 java 瀵硅薄鐨勫唴瀛樸?br /> 濡傛灉JVM涓嶈兘鍦╦ava鍫嗕腑鑾峰緱鏇村鍐呭瓨鏉ュ垎閰嶆洿澶歫ava瀵硅薄錛屽皢浼氭姏鍑簀ava鍐呭瓨涓嶈凍(java.lang.OutOfMemoryError)閿欒銆傞粯璁ゆ儏鍐典笅錛屽簲鐢ㄧ▼搴忓穿婧冦?br /> 鏈湴鍐呭瓨 錛?榪欐槸 JVM 鐢ㄤ簬鍏跺唴閮ㄦ搷浣滅殑鍐呭瓨銆?br /> 濡傛灉 JVM 鏃犳硶鑾峰緱鏇村鏈湴鍐呭瓨錛屽畠灝嗘姏鍑烘湰鍦板唴瀛樹笉瓚籌紙鏈湴 OutOfMemoryError錛夐敊璇傚綋榪涚▼鍒拌揪鎿嶄綔緋葷粺鐨勮繘紼嬪ぇ灝忛檺鍊鹼紝鎴栬呭綋璁＄畻鏈虹敤瀹?RAM 鍜屼氦鎹㈢┖闂存椂錛岄氬父浼氬彂鐢熻繖縐嶆儏鍐點?br /> 榪涚▼澶у皬 錛?榪涚▼澶у皬灝嗘槸 java 鍫嗐佹湰鍦板唴瀛樹笌鍔犺澆鐨勫彲鎵ц鏂囦歡鍜屽簱鎵鍗犵敤鍐呭瓨鐨勬誨拰銆傚湪 32 浣嶆搷浣滅郴緇熶笂錛岃繘紼嬬殑铏氭嫙鍦板潃絀洪棿鏈澶у彲杈懼埌 4 GB銆備粠榪?4 GB 鍐呭瓨涓紝鎿嶄綔緋葷粺鍐呮牳涓鴻嚜宸變繚鐣欎竴閮ㄥ垎鍐呭瓨錛堥氬父涓?1 - 2 GB錛夈傚墿浣欏唴瀛樺彲鐢ㄤ簬搴旂敤紼嬪簭銆?/span>
2.
java铏氭嫙鏈烘槸閬電収鏈夊叧瑙勮寖鐨勪竴涓蔣浠跺疄鐜幫紝瀛樺湪浜庡唴瀛樹腑銆俲vm鏄敱瀹夎浜庢満鍣ㄤ笂鐨刯re(java榪愯鐜)鐢熸垚鐨勩傞氬父鏉ヨ錛屾瘡嬈¤繍琛屼竴涓猘pplication閮戒細鐢熸垚涓涓猨vm錛屼絾鏄篃鍙互鏈夊涓▼搴忓湪鍚屼竴涓猨vm閲岄潰銆?/span>
鍙互浣跨敤鍛戒護java -X鏌ョ湅闈炴爣鍑?non-standard)鐨勭▼搴忚繍琛岄夐」錛屼互涓?涓槸鎴戞墍鍏沖績鐨勶細
-Xms set initial Java heap size
-Xmx set maximum Java heap size
-Xss set java thread stack size
錛峏mx璁劇疆搴旂敤紼嬪簭(涓嶆槸jvm)鑳藉浣跨敤鐨勬渶澶у唴瀛樻暟錛岃繖涓間篃涓嶅簲璇ヨ緗繃澶э紝瓚呰繃鏈哄櫒鍐呭瓨銆?br />
渚嬪錛歫ava -Xmx50M testMemory
錛峏ms璁劇疆紼嬪簭鍒濆鍖栫殑鏃跺欏唴瀛樻爤鐨勫ぇ灝忋傛湁鏃跺彲浠ョ敤浜庢敼鍙樼▼搴忚繍琛岀殑鏁堢巼銆?br />
渚嬪浣跨敤浠ヤ笅鏂瑰紡榪愯涓涓崰鐢?0M宸﹀彸鍐呭瓨鐨勭▼搴弔estMemory錛?br />
java -Xms50M testMemory
浣跨敤榪欎釜鏂規硶鍙互寰楀埌搴旂敤鐨勭┖闂翠嬌鐢ㄩ噺
/*
Returns the total amount of memory in the Java virtual machine. The value returned by this method may vary over time, depending on the host environment.
*/
System.out.println(Runtime.getRuntime().totalMemory());
3.
鏌ョ湅java榪涚▼鐨勫唴瀛樹嬌鐢ㄩ噺錛?br />
Windows浠誨姟綆＄悊鍣?Windows Task Manager)
澧炲ぇ榪愯搴旂敤鐨凥eap鐨勫彇鍊?/span>
//鍛戒護琛屾墽琛屾柟寮?br /> java -Xms256 -Xmx512m app
//Tomcat鎵ц鏂瑰紡
Windows涓嬶紝鍦ㄦ枃浠秢tomcat_home}/bin/catalina.bat
鍦ㄦ枃浠跺紑澶村彲澧炲姞濡備笅璁劇疆錛?/span>
set JAVA_OPTS=-Xms256m -Xmx512m
Unix涓嬶紝鍦ㄦ枃浠秢tomcat_home}/bin/catalina.sh鐨勫墠闈紝鍙鍔犲涓嬭緗細
JAVA_OPTS='-Xms256m -Xmx512m'
]]>
Context path涓棿鍔犱笂reloadable="true"
渚嬪錛?lt;Context path="" docBase="" reloadable="true">
鏂規硶浜岋細
鍒犻櫎work鐩綍涓嬬殑緙撳瓨鏂囦歡
鍙互鎶奀atalina鐩綍鍒犻櫎錛?br />
娉ㄦ剰錛氫笉鑳芥妸work鏁翠釜鐩綍鍒犻櫎錛屼笉鐒墮噸鍚?a onclick="javascript:tagshow(event, 'tomcat');" href="javascript:;" target="_self">tomcat鏃訛紝浼氭妸conf/web.xml鍒犻櫎鎺夛紝榪欐牱鍦ㄥ惎鍔ㄦ椂錛?a onclick="javascript:tagshow(event, '%C8%D5%D6%BE');" href="javascript:;" target="_self">鏃ュ織浼氭彁紺猴細No Default web.xml錛屼笖璁塊棶欏甸潰浼氭樉紺?04閿欒錛?/p>
<Context reloadable="true">
<WatchedResource>WEB-INF/web.xml</WatchedResource>
<Resource name="jdbc/oracleds" auth="Container"
type="javax.sql.DataSource"
maxActive="100" maxldle="30" maxWait="10000"
username="scott" password="tiger"
driverClassName="oracle.jdbc.OracleDriver"
url="jdbc:oracle:thin:@192.168.1.20:1521:ora9" />
</Context>
]]>
淇敼server.xml
<Connector port="8080" protocol="HTTP/1.1" maxThereads="150"
connectionTimeout="20000" redirectPort="8443" URIEncoding="UTF-8"/>
鐩殑錛氳В鍐矴et鏂規硶浼犲弬鐨勪腑鏂囦貢鐮侀棶棰?br /> 淇敼Context.xml
<Context>淇敼鎴?lt;Context reloadable="true">
鐩殑:褰揥EB搴旂敤涓殑鏂囦歡鎴杦eb.xml 鏂囦歡淇敼鍚嶵omcat鏈嶅姟鍣ㄤ細鑷姩鍔犺澆褰撳墠鐨剋eb搴旂敤銆傞伩鍏嶉噸鏂板惎鍔═omcat.
<Context reloadable="false">浜у搧闃舵涓嶈鏀逛負true錛屾敼涓?false
淇敼tomcat-users.xml
<?xml version='1.0' encoding='uft-8'?>
<tomcat-users>
<role rolename="manager"/>
<role rolename="admin"/>
<user username="liuwei" password="liuwei"
roles="admin,manager"/>
</tomcat-users>
web閿欒澶勭悊
401閿欒
404閿欒
500閿欒
瑙ｅ喅鏂規錛氳鍒墮敊璇俊鎭〉闈紝璁劇疆web.xml鏂囦歡
<error-page>
<error-code>404</error-code>
<location>/error404.html</location>
</error-page>
<error-page>
<error-code>500</error-code>
<location>/error500.html</location>
</error-page>
]]>
]]>
java.lang.IllegalArgumentException: Document base *** does not exist or is not a readable
directory
at org.apache.naming.resources.FileDirContext.setDocBase(FileDirContext.java:141)
at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:3957)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4126)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
********
.................
鍏跺疄榪欎釜闂寰堢畝鍗曪紝tomcat鐨勪竴涓簲鐢ㄤ笉鍙槸閭ｄ釜鏂囦歡澶硅屽凡...
璇︾粏鎿嶄綔搴旇鏄繖鏍風殑錛?/p>
1.璇ラ」鐩殑War鏂囦歡浠?**\apache-tomcat-6.0.16\webapps 縐誨嚭錛?/p>
2.璇ラ」鐩殑鏌愪簺閰嶇疆浠?***apache-tomcat-6.0.16\work\Catalina\localhost 縐婚櫎錛?/p>
3.璇ラ」鐩殑閰嶇疆鏂囦歡錛岀洰褰曪細 ***\apache-tomcat-6.0.16\conf\Catalina\localhost縐婚櫎銆?/p>
4.璇ラ」鐩殑閰嶇疆鏂囦歡錛岀洰褰曪細 ***\apache-tomcat-6.0.16\conf\server.xml涓敼淇垨娣誨姞鐨勯厤緗槸鍚︽紜?br />
]]>