docker安装oracle

最近工作上面遇到一个性能相关的问题，大体描述一下： 批量任务执行的过程中导致数据库sql执行时间过长，查看之后是由于批量任务占满数据库连接池导致的，至于为什么批量任务会不受系统控制导致连接池占满就不说了，感觉是公司内部机密。为了能够在自己的博客里面记录这个过程，博主想在自己的ubuntu上安装一个oracle，但是下载下来之后发现ubuntu安装oracle会出现各种问题，而且网上解决方案比较少，所以打算使用docker安装，顺便复习一下自己docker的操作。

　　首先系统中应该存在docker这个运用程序，安装可以使用命令：sudo apt-get install docker.

　　安装完成之后最好是将docker的源修改一下，修改为阿里大佬的源，讲道理比docker官方的源强100倍。详情请参考http://blog.csdn.net/bwlab/article/details/50542261

　　搜索oracle相关的docker源：

work@work:~$ sudo docker search oracle
[sudo] work 的密码：
NAME                                DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
oraclelinux                         Oracle Linux is an open-source operating s...   402       [OK]
frolvlad/alpine-oraclejdk8          The smallest Docker image with OracleJDK 8...   269                  [OK]
alexeiled/docker-oracle-xe-11g      This is a working (hopefully) Oracle XE 11...   222                  [OK]
sath89/oracle-12c                   Oracle Standard Edition 12c Release 1 with...   221                  [OK]
sath89/oracle-xe-11g                Oracle xe 11g with database files mount su...   135                  [OK]
isuper/java-oracle                  This repository contains all java releases...   55                   [OK]
jaspeen/oracle-11g                  Docker image for Oracle 11g database            55                   [OK]
oracle/glassfish                    GlassFish Java EE Application Server on Or...   30                   [OK]
oracle/openjdk                      Docker images containing OpenJDK Oracle Linux   26                   [OK]
airdock/oracle-jdk                  Docker Image for Oracle Java SDK (8 and 7)...   23                   [OK]
ingensi/oracle-jdk                  Official Oracle JDK installed on centos.        21                   [OK]
wnameless/oracle-xe-11g             Dockerfile of Oracle Database Express Edit...   20                   [OK]
cogniteev/oracle-java               Oracle JDK 6, 7, 8, and 9 based on Ubuntu ...   20                   [OK]
n3ziniuka5/ubuntu-oracle-jdk        Ubuntu with Oracle JDK. Check tags for ver...   14                   [OK]
oracle/nosql                        Oracle NoSQL on a Docker Image with Oracle...   13                   [OK]
collinestes/docker-node-oracle      A container with Node.js/Oracle instant cl...   9                    [OK]
openweb/oracle-tomcat               A fork off of Official tomcat image with O...   7                    [OK]
sgrio/java-oracle                   Docker images of Java 7/8 provided by Orac...   7                    [OK]
andreptb/oracle-java                Debian Jessie based image with Oracle JDK ...   7                    [OK]
flurdy/oracle-java7                 Base image containing Oracle's Java 7 JDK       5                    [OK]
davidcaste/debian-oracle-java       Oracle Java 8 (and 7) over Debian Jessie        3                    [OK]
teradatalabs/centos6-java8-oracle   Docker image of CentOS 6 with Oracle JDK 8...   3
publicisworldwide/oracle-core       This is the core image based on Oracle Lin...   1                    [OK]
spansari/nodejs-oracledb            nodejs with oracledb installed globally on...   1
sigma/nimbus-lock-oracle                                                            0                    [OK]

　　在这里我们选sath89/oracle-12c    sudo docker pull sath89/oracle-12c. 替换阿里源之后速度还是挺快的，差不多10分钟就能下载完成。查看下载的源，一共5.7G

work@work:~$ sudo docker images;
REPOSITORY                    TAG                 IMAGE ID            CREATED             SIZE
sath89/oracle-12c             latest              17cd1ab9d9a7         days ago          5.703 GB
kalilinux/kali-linux-docker   latest              8ececeaf404d         months ago        1.558 GB

　　创建docker oracle容器

work@work:~/app$ sudo docker run -it sath89/oracle-12c
Database not initialized. Initializing database.
Starting tnslsnr
Copying database files
% complete
% complete
% complete
% complete
% complete
% complete
Creating and starting Oracle instance
% complete
% complete
    % complete
% complete
% complete
% complete
% complete
Completing Database Creation
% complete
% complete
% complete
% complete
% complete
% complete
Look at the log file "/u01/app/oracle/cfgtoollogs/dbca/xe/xe.log" for further details.
Configuring Apex console
Database initialized. Please visit http://#containeer:8080/em http://#containeer:8080/apex for extra configuration if needed
Starting web management console

PL/SQL procedure successfully completed.

Starting import from '/docker-entrypoint-initdb.d':
found file /docker-entrypoint-initdb.d//docker-entrypoint-initdb.d/*
[IMPORT] /entrypoint.sh: ignoring /docker-entrypoint-initdb.d/*

Import finished

Database ready to use. Enjoy! ;)

　　容器启动完成，注意使用此镜像创建的oracle用户名和密码为： system/oracle,然后我们使用本地的sql工具连接虚拟机的oracle。

　　　至此，使用docker安装oracle完成，安装过程简单，非生产环境可以考虑使用。下一节详细说明以下遇到的性能问题及相关的分析思路。