A programmer deployed a set of oracle 11g on Alibaba Cloud. The boss said that they had been working on it for several days, and the monitoring could not be started. Let me take a look. When I got on board, it turned out to be a problem with the host name setting (the elastic IP of Alibaba Cloud was directly written in the /etc/hosts file, and the network card address of the cloud host is generally a private address). On this matter, I also made a special article, the address is http://blog.51cto.com/sery/2084706. After fixing this problem, I felt that it was inappropriate to directly put the database on the public network. Other problems were discovered, such as unreasonable disk space planning and mixed java. Therefore, it is recommended to use this machine as a test environment, purchase several cloud hosts, put them into the vpc network, redeploy the application and database, and separate the database from other applications.
It's all my fault, so I had to do it myself and deploy the oracle on the cloud again. I never recommend deploying oracles in the public cloud. The main reasons are as follows:
1. The cloud host does not have swap partitions. I know several service providers, and they are all like this!
2. The customization of the operating system of the cloud server is not flexible. In my experience, when oracle 11g is deployed on an operating system like centos5, there will be no dependency problems, while in versions above centos6, some dependency packages will be checked incorrectly during the installation of oracle.
3. Cloud hosting performance issues. Under normal circumstances, we will choose a highly configured physical server to deploy.
Deploying oracles in the public cloud, although awkward, still has to work. Although during the installation process, several packages did not match (actually the version was high), these checks were ignored, deployed, and run for a long time (about a month). Check the alarm log, and no exception is found, indicating that the installation is still successful. <font size=10>At present, I don't have an online cloud server in my hands. Here I use a virtual environment to restore the entire deployment process, hoping to help those in need.</font>