如何自动重新安装Azure Linux OS磁盘以进行读写以启用Oracle DB自动启动

Question

I have a Linux VM in Azure, with Oracle Database installed. In order to get the database up and running, I have to run the following commands in sequence:

1. sudo su - followed by password entry (the user I have access to is not an admin user)
2. mount -orw,remount /; exit
3. sudo su - oracle (password entry not required at this point)
4. lsnrctl start
5. sqlplus /nolog
6. CONNECT / AS SYSDBA;
7. STARTUP;
8. DISCONNECT;
9. CONNECT; followed by entering user id/password

This makeshift routine is a result of my (probably) botching the OS disk expansion. While I somehow managed to successfully complete the disk expansion, the database became unable to start up automatically like it did before my disk expansion efforts.

Ideally I would like to configure the database to startup automatically like before; failing which, any way to automate/shortcut this routine would be appreciated (I have this committed to muscle memory, but any amount of time saved would be great).

Answer 1

You could you a script to do all routine on startup.

Create script like this and call it startDB.sh (do not forget to make it executable - chmod +x startDB.sh):

\#!/bin/sh
mount -orw,remount /; exit
lsnrctl start
sqlplus /nolog <<EOF
connect user/pass
STARTUP;
DISCONNECT;
EOF

Add script to startup:

    \#crontab -e
    @reboot su - user -c "/home/user/startDB.sh"

If you don't have access to crontab, you can run startDB.sh script manually, this should help you to save some time :)

It's not tested, so there can be errors or mistypes, please run some test before using it in production.