Viewing the maximum number of connections in an Oracle database.

To view the maximum number of connections for an Oracle database, you can follow these steps:

Connect to the Oracle database using an administrative account, such as sys or system.

Execute the following SQL query：

SELECT name, value
FROM v$parameter
WHERE name = 'processes';

This query will return a parameter named ‘processes’ and its value.

Check the ‘value’ column in the query results to see the maximum number of connections for the database.

Please note that the values in the query results indicate the maximum number of concurrent sessions supported by the database instance. This value is set in the database configuration file (such as init.ora or spfile.ora) or the dynamic parameter file (such as spfileSID.ora), and requires restarting the database for changes to take effect.

If the query result is empty or the ‘processes’ parameter is not found, there is another way to retrieve the maximum connection count. Execute the following SQL query:

SHOW PARAMETER processes;

This query will directly display the maximum number of connections.