See ALL Initialization Parameters

This is very common on the web, but I will still want to have it here as well.

Sometimes hidden parameters are interesting, and we would like to see them and their value

The “show parameter” command in SQL*Plus shows us only the regular parameters and excludes the hidden ones. It is important to know, though, that if a hidden parameter was explicitly set in the database, the “show parameter” will show it. It will not show any hidden parameter with a default untouched value.

In order to get a list of all initialization parameters, including the hidden ones, use the following script, it will return the name of the parameter, its current value and its default value:

Remember, if you want to remove a parameter, remove it. Don’t set it to its default value. If you don’t know how to remove a parameter from the spfile look here.

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