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cp catalina.out catalina.out.bak_`date +%Y%m%d_%H%M%S`
The command above will generate file with format fileName: catalina.out.bak_20200219_215651
Clear the content of log file:
echo "" > catalina.out
1,打开plsql 帮助-支持信息看看uls_lang是否设置
2,查看服务器端字符集
Select *from V$NLS_PARAMETERS where PARAMETER='NLS_CHARACTERSET';
Select USERENV ('LANGUAGE' ) from DUAL;
3,若是不一致,设置新增环境变量
内存配置
Linux
修改TOMCAT_HOME/bin/catalina.sh
位置cygwin=false前。
JAVA_OPTS="-server -Xms256m -Xmx512m -XX:PermSize=64M -XX:MaxPermSize=128m"
windows
修改TOMCAT_HOME/bin/catalina.bat
第一行加上
JAVA_OPTS="-server -Xms256m -Xmx512m -XX:PermSize=64M -XX:MaxPermSize=128m" ...
//String startDateTime = "2019-05-06 08:00";
//String endDateTime = "2019-05-06 18:00";
String startDateTime = params.getStartTime();
String endDateTime = params.getEndTime();
String startDateStr = startDateTime.substring(0,10);
String endDateStr = endDateTime.subs ...
Maven打jar包配置
- 博客分类:
- eclipse
<build>
<finalName>GenerateData</finalName>
<plugins>
<!-- 指定maven的JDK编译版本1.6+ -->
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
...
Linux启动Oracle
- 博客分类:
- oracle
[root@localhost ~]# su - oracle
上一次登录:一 5月 13 12:57:49 CST 2019pts/1 上
[oracle@localhost ~]$ ps -ef | grep smon
oracle 2541 2513 0 10:30 pts/0 00:00:00 grep --color=auto smon
[oracle@localhost ~]$ echo $ORACLE_SID
cssca
[oracle@localhost ~]$ sqlplus / as sysdba
SQL*Plus: Relea ...
Oracle查看表空间使用情况
- 博客分类:
- oracle
SELECT a.tablespace_name,
total,
free,
total / (1024 * 1024 * 1024) "total",
free / (1024 * 1024 * 1024) "free"
FROM (SELECT tablespace_name, SUM(bytes) free
FROM dba_free_space
GROUP BY tablespace_name) a,
(SELECT ...
setting.xml 镜像配置
- 博客分类:
- eclipse
1、在mirrorOf与repositoryId相同的时候优先是使用mirror的地址
2、mirrorOf等于*的时候覆盖所有repository配置
3、存在多个mirror配置的时候mirrorOf等于*放到最后
4、只配置mirrorOf为central的时候可以不用配置repository
<!-- 使用阿里云的镜像作为central中央仓库 -->
<mirror>
<id>nexus-aliyun</id>
<name>Nexus aliyun</name>
...
Sonar多模块配置
- 博客分类:
- eclipse
reg
m1
m2
mm1
mm2
配置文件如下:
sonar.projectKey=regsonar.projectName=regsonar.sourceEncoding=UTF-8sonar.projectVersion=0.0.1sonar.modules=m1,m2m1.sonar.projectName=m1m1.sonar.sources=srcm1.sonar.projectVersion=0.0.1m2.sonar.projectName=m2m2.sonar.modules=mm1,mm2m2.mm1.so ...
-- 删除流程实例(一定要以下表顺序,否则会报键约束错误)
delete from act_hi_attachment t where t.proc_inst_id_='7626';
delete from act_hi_comment t where t.proc_inst_id_='7626';
delete from act_hi_actinst t where t.proc_inst_id_='7626';
delete from act_hi_detail t where t.proc_inst_id_='7626';
delete from act_hi_identi ...
java中对象与字节数组相互转换
- 博客分类:
- eclipse
首先对象要继承Serializable接口
将字节转换为对象
public static Object ByteToObject(byte[] bytes) {
Object obj = null;
try {
// bytearray to object
ByteArrayInputStream bi = new ByteArrayInputStream(bytes);
ObjectInputStream oi = new ObjectInputStream(bi);
obj = oi.readObject(); ...
t.bat 文件内容:
@echo off
echo java -jar F:\modify_version\lib\ProfileUpdater.jar "%~1"
调用结果(传参演示)
所以最终项目上脚本的改成如下:
ModifyVersion.bat 文件内容:
@echo off
title Modify version
SET JAVA_HOME=C:\Program Files\Java\jdk1.8.0_144
SET CLASSPATH=%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\t ...
Activity 5.16 查看流程图报错:
java.lang.NullPointerException: null
at org.activiti.image.impl.DefaultProcessDiagramGenerator.initProcessDiagramCanvas(DefaultProcessDiagramGenerator.java:729) ~[activiti-image-generator-5.16.3.jar:5.16.3]
at org.activiti.image.impl.DefaultProcessDiagramGenerator.gen ...
-Xms256M -Xmx512M -XX:PermSize=256m -XX:MaxPermSize=512m
<failOnMissingWebXml>false</failOnMissingWebXml>
public static void main(String[] args) {
try {
BufferedReader bufr = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bufw = new BufferedWriter(new OutputStreamWriter(System.out));
bufw.write("请输入以下命令?");
bufw.newLine();
bufw.write("[加密 ...