How do you Check if the Oracle Database is up?

There are several ways to implement if the Oracle database is up.

1. Make sure the Firewall Port is open between the database server and the user's machine.

2. Make sure the Firewall Port is Open between the Database Server and the application Server.

3. Look for any Network Outages.

4. Authenticate into the Firewall.

5. Check the display space on the database server.

6. Check whether any changes that went over the weekend impacted the Oracle Database.

   • Patches.

   • Maintenance Releases.

   • Quick Fixes.

   • Firewall Policy updates.

Check the Connectivity between the Oracle database server and the application server

Here are some general approaches.

• telnet

telnet is common on Unix/Linux Operating Systems.
Command (ksh/bash):
telnet <database_server_ip> <port_number>

** Replace <database_server_ip> with the IP address of the Oracle database server and <port_number> with the specific port you want to check.

• netcat

Command (ksh/bash):
nc -zv <database_server_ip> <port_number>

** Replace <database_server_ip> with the IP address of the Oracle database server and <port_number> with the specific port you want to check.

• ncat

Command (ksh/bash):
ncat -zv <database_server_ip> <port_number>

** Replace <database_server_ip> with the IP address of the Oracle database server and <port_number> with the specific port you want to check.

• Test-NetConnection

Command (Powershell/Windows):
Test-NetConnection -ComputerName <database_server_ip> -Port <port_number>

** Replace <database_server_ip> with the IP address of the Oracle database server and <port_number> with the specific port you want to check.

• ping

Command (Powershell/Windows/Linux/Unix):
ping <database_server_ip>

** Replace <database_server_ip> with the IP address of the Oracle database server.