Oracle 12c应用连接VIP轮训负载均衡?
目前很多生产数据库都是两节点RAC,应用连接的数据库通常会连接SCAN IP或者VIP,这里做一个小实验,如果我们使用VIP连接, 应该怎样配置我们的客户端,负载均衡是否是严格意义上的轮训机制,只有通过自己的测试才能得到准备的答案。
<rac01:orcl1:/u01/app/oracle/product/12.1.0/dbhome_1/network/admin>$less tnsnames.ora # tnsnames.ora Network Configuration File: /u01/app/oracle/product/12.1.0/dbhome_1/network/admin/tnsnames.ora # Generated by Oracle configuration tools. orcl = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = rac-scan)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl) ) ) vip = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.203)(PORT = 1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.204)(PORT = 1521)) (LOAD_BALANCE = yes) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl) ) ) 2.测试脚本如下 <rac01:orcl1:/u01/app/oracle/product/12.1.0/dbhome_1/network/admin>$ <rac01:orcl1:/u01/app/oracle/product/12.1.0/dbhome_1/network/admin>$less load_balance.sh #!/bin/bash for i in {1..100} do echo $i sqlplus -S system/oracle@vip <<EOF select instance_name from v$instance; select count(*) from t1; EOF sleep 1 done exit 0 3.开始测试,观察 <rac01:orcl1:/u01/app/oracle/product/12.1.0/dbhome_1/network/admin>$sh load_balance.sh 1 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 2 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 3 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 4 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 5 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 6 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 7 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 8 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 9 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 10 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 11 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 12 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 13 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 14 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 15 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 16 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 17 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 18 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 19 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 20 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 21 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 22 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 23 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 24 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 25 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 26 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 27 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 28 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 29 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 30 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 31 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 32 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 33 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 34 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 35 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 36 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 37 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 38 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 39 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 40 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 41 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 42 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 43 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 44 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 45 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 46 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 47 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 48 INSTANCE_NAME ---------------- orcl2 COUNT(*) ---------- 2910624 49 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 50 INSTANCE_N ....省略............... COUNT(*) ---------- 2910624 100 INSTANCE_NAME ---------------- orcl1 COUNT(*) ---------- 2910624 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
- ruby-on-rails – Sunspot Solr搜索Rails活动记录
- c – std :: function arguments list和typedefs
- Oracle语句
- cocos 项目 接入友盟 android 推送sdk
- ruby-on-rails – Belongs_to主键?
- 【SQLite】SQLite的简单使用
- cocos2d-x 3.x 引入【#include "cocos-ext.h
- vue-cli项目代理proxyTable配置exclude的方法
- c# – 尝试使用char *数据封送结构但数据为空
- SRAM/DRAM,PROM/EPROM/EEPROM,NOR/NAND FLASH区别