How to check hidden parameter in oracle 11g

As an Oracle 11g user, you may come across hidden parameters that affect your database setup’s performance and stability. These parameters are not easily visible or accessible through the default interface. However, if you take the time to learn how to check these parameters, you can improve the efficiency of your database and prevent potential issues from arising.

In this article, we will show you how to check hidden parameters in Oracle 11g by following three simple steps:

Step 1: Identify Hidden Parameters

Oracle provides a list of known hidden parameters that can affect database performance. Some examples include maximum connections and memory used for caching. However, you may need to discover other parameters through trial and error or consultation with an experienced administrator. To get started, search online for lists of Oracle 11g hidden parameters or consult the documentation provided by Oracle.

Step 2: Check Parameter Values

Once you have identified the specific parameter you want to adjust, query the sysdbms_all_parameters system view in Oracle 11g to find its value. This view shows all database parameters, including both visible and hidden ones. You can filter the list by parameter name or category to find the parameter you are looking for more easily. For example, if you want to adjust the maximum number of connections, you would search for the "MaximumNumberOfConnections" parameter in the list.

Step 3: Adjust Parameter Values

If the value of a hidden parameter is not set to an optimal level, adjust it using the alter system statement in Oracle 11g. Be careful when implementing changes as they can have a significant impact on your database’s behavior. For example, if you increase the maximum number of connections, this could cause performance issues if your server does not have enough resources to handle the increased load. Always make sure to test any changes thoroughly before deploying them in a production environment.

In conclusion, by following these three steps, you can check and adjust hidden parameters in Oracle 11g to improve the efficiency of your database setup and prevent potential issues from arising. It is important to be careful when making changes and always consult with an experienced administrator before implementing any significant changes.

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