CentOS - enable / disable Oracle

Reference

centos7 Virtual machine start Oracle Database and shutdown command line operation instructions

Own operation experience

Because of the power failure , This causes the test server to shut down and restart ,oracle Didn't start . Then start oracle.

start-up oracle The following sequence must be ensured ：

Stop listening – Log into the database — Stop the database service – Start database service — Start listening

Stop listening

Stop listening , Need to put root Switch account to oracle Account , Use the following command ：

[[email protected] ~]# su - oracle

Log into the database

The login database here , It's using sqlplus Log in . First use sqlplus /nolog Sign in sqlplus, Reuse conn / as sysdba With sysdba Log in to the database . In fact, the above two commands can be abbreviated as follows ：

sqlplus / as sysdba

stop oracle service

After the above command is executed , There will be one sqlplus Command window for , Enter the following command in the window ：

SQL> shutdown immediate;

Just stop oracle service .

Start database service

take startup Command to start the database service ：

SQL> startup;

When the command is executed , The following message appears in the window , Indicates successful startup ：

Turn on monitoring

When the database service is started , You need to enable service listening again . The command is still there SQL> in , You need to exit first , Then execute the monitor on command ：

lsnrctl start

The complete process is as follows ：

And at that point it goes through lsnrctl status You can see that Status information of current listening .

The problem record —— long-range pl/sql Connection timeout

This kind of problem , If the connection operation on the local machine of the server can succeed , The remote connection will time out , We need to pay attention to A firewall Set up .

Open designated port .
Do not use iptables -F, This command can be used without shutting down the firewall , Release all port restrictions , But it's still not safe ！