How do I check if my DB is up?
How to check if DB is up & running from Application Server?
- Write a shell script in App server which connects to DB. Trigger a dummy select statement. If that works then DB is up.
- Write a shell script in App server which pings the DB. If ping works then DB is up.
How do I know if mysql is running on Linux?
We check the status with the systemctl status mysql command. We use the mysqladmin tool to check if MySQL server is running. The -u option specifies the user which pings the server. The -p option is a password for the user.
How do you check whether the Oracle database is open or not?
How to check your Oracle Database status (whether running properly or not)
- Check whether the Oracle Process run or not #> ps -ef | grep pmon. …
- Check the instance status SQL>select instance_name, status from v$instance;
- Check whether the database can be read or write SQL>select name, open_mode from v$database;
How do I know if mysql is running on Ubuntu?
Once the installation is complete, the MySQL server should be started automatically. You can quickly check its current status via systemd: sudo service mysql status ● mysql.
How do you restart a database?
To start, stop, pause, resume, or restart an instance of the SQL Server Database Engine. In Object Explorer, connect to the instance of the Database Engine, right-click the instance of the Database Engine you want to start, and then click Start, Stop, Pause, Resume, or Restart.
How do I start the database in Linux?
On Linux with Gnome: In the Applications menu, point to Oracle Database 11g Express Edition, and then select Start Database. On Linux with KDE: Click the icon for the K Menu, point to Oracle Database 11g Express Edition, and then select Start Database.
Where is mysql database file in Linux?
Resolution
- Open up MySQL’s configuration file: less /etc/my.cnf.
- Search for the term “datadir”: /datadir.
- If it exists, it will highlight a line that reads: datadir = [path]
- You can also manually look for that line. …
- If that line does not exist, then MySQL will default to: /var/lib/mysql.
How do I know if MariaDB is running on Linux?
How to check MariaDB version
- Log into your MariaDB instance, in our case we log in using the command: mysql -u root -p.
- After you log in you can see your version in the welcome text – highlighted in the screen-grab below:
- If you cannot see your version here you can also run the following command to see it:
How do I start mysql in Linux?
Start MySQL Server on Linux
- sudo service mysql start.
- sudo /etc/init.d/mysql start.
- sudo systemctl start mysqld.
- mysqld.
How do I know if TNS listener is running?
Do the following:
- Log on to the host where the Oracle database resides.
- Change to the following directory: Solaris: Oracle_HOME/bin. Windows: Oracle_HOMEbin.
- To start the listener service, type the following command: Solaris: lsnrctl START. Windows: LSNRCTL. …
- Repeat step 3 to verify that the TNS listener is running.
How do I fix TNS no listener error?
First check the tnsnames. ora file and ensure that it points to the correct server and port. If the Forms server is on another machine, test the TNS resolve with tnsping from the command prompt. Finally, check the listener.
How do I check tablespace?
To get the tablespace for a particular Oracle table: SQL> select tablespace_name from all_tables where owner = ‘USR00’ and table_name = ‘Z303’; To get the tablespaces for all Oracle tables in a particular library: SQL> select table_name, tablespace_name from all_tables where owner = ‘USR00’;