The PROCESSES initialization parameter determines the maximum number of
operating system processes that can be connected to Oracle Database concurrently. The
value of this parameter must be a minimum of one for each background process plus
one for each user process. The number of background processes will vary according
the database features that you are using. For example, if you are using Advanced
Queuing or the file mapping feature, you will have additional background processes.
If you are using Automatic Storage Management, then add three additional processes.
If you plan on running 50 user processes, a good estimate would be to set the
PROCESSES initialization parameter to 70.
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