lliu26
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subclipse新旧版本冲突造成，删掉workspace中
/.metadata/.plugins/org.tigris.subversion.subclipse.core文件即可
Lock:
I had known how to lock the record of [name = 'hp_release_pwd'] and why it came out.
• When I tried to insert password which longer than 64 characters, it came out the PersistenceSessionException: Insert failed Exception. At that time, the record had not been locked.
• And when I modified pa ...
1.jVisualVM VisualGC
2.垃圾回收机制中，堆栈的大小不包括持久栈大小。
3.access webpage no response, maybe 数据库连接池，垃圾回收.
4.jvm commands:
jstat -gcutil pid 1000(catch interval) 3(catch time)
5.jboss set startup paramaters:
bin/run.conf.bat
6.jboss 瘦身:
admin-console.war,jmx-console.war,ROOT.war,management
1.Load Balancing != Fault Tolerance
2.run.bat -c all-1 -Djboss.service.binding.set=ports-01 -Djboss.messaging.ServerPeerID=1
3.all/deploy 只对当前进程有效
all/farm 对所有进程有效
4.EJB 反部署
Jboss 启动
模拟断电: kill -9 pid
5.stateless session bean:
@Stateless
@Clustered
6.change RAM size:
<path>\jboss-as\b ...
1.Weblogic Domain --- JBoss instance
2.assign server:
run.bat -c all/default/...
3.assign server IP address:
run.bat -b IP_address
4.assign all IP accessable:
run.bat -b 0.0.0.0
5.change port number:
<path>\jboss-as\server\default\deploy\jbossweb.sar\server.xml
6.Run muitiple jboss instances:
r ...
好久没写关于数据库链接的代码了，居然都不会了，果断发帖纪录一下。
数据库相关的Object类：
package com.lliu.JDBC;
public class AAA {
public AAA(){
}
public AAA(int ID, String name, String dept){
this.setID(ID);
this.setName(name);
this.setDept(dept);
}
public int ID;
public String name;
public String dept;
...
Access restriction:The type BASE64Decoder is not accessible ...\jre\lib\rt.jar
Solution 1 :
import=”sun.misc.BASE64Decoder”
出现错误提示为：Access restriction: The type BASE64Decoder is not accessible due to restriction
on required library D:\ProgramFiles\MyEclipse\jre\lib\rt.jar
Solution 1 :
BASE64De ...