最近工作上面遇到一個性能相關的問題，大體描述一下： 批量任務執行的過程中導致數據庫sql執行時間過長，查看之后是由於批量任務占滿數據庫連接池導致的，至於為什么批量任務會不受系統控制導致連接池占滿就不說了，感覺是公司內部機密。為了能夠在自己的博客里面記錄這個過程，博主想在自己的ubuntu上安裝一個oracle，但是下載下來之后發現ubuntu安裝oracle會出現各種問題，而且網上解決方案比較少，所以打算使用docker安裝，順便復習一下自己docker的操作。
首先系統中應該存在docker這個運用程序，安裝可以使用命令：sudo apt-get install docker.
安裝完成之后最好是將docker的源修改一下，修改為阿里大佬的源，講道理比docker官方的源強100倍。詳情請參考http://blog.csdn.net/bwlab/article/details/50542261
搜索oracle相關的docker源：
work@work:~$ sudo docker search oracle [sudo] work 的密碼： 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]
在這里我們選sath89/oracle-12c sudo docker pull sath89/oracle-12c. 替換阿里源之后速度還是挺快的，差不多10分鍾就能下載完成。查看下載的源，一共5.7G
work@work:~$ sudo docker images; REPOSITORY TAG IMAGE ID CREATED SIZE sath89/oracle-12c latest 17cd1ab9d9a7 2 days ago 5.703 GB kalilinux/kali-linux-docker latest 8ececeaf404d 9 months ago 1.558 GB
創建docker oracle容器
work@work:~/app$ sudo docker run -it sath89/oracle-12c Database not initialized. Initializing database. Starting tnslsnr Copying database files 1% complete 3% complete 11% complete 18% complete 26% complete 37% complete Creating and starting Oracle instance 40% complete 45% complete 50% complete 55% complete 56% complete 60% complete 62% complete Completing Database Creation 66% complete 70% complete 73% complete 85% complete 96% complete 100% 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! ;)
容器啟動完成，注意使用此鏡像創建的oracle用戶名和密碼為： system/oracle,然后我們使用本地的sql工具連接虛擬機的oracle。
至此，使用docker安裝oracle完成，安裝過程簡單，非生產環境可以考慮使用。下一節詳細說明以下遇到的性能問題及相關的分析思路。