12-28-2019
Oh, for the system, ask how many concurrent users you had accessing the apps on the mainframe, be sure to have enough pseudottys, on the Unix, then remember the users once connected may well be always the same user under Unix under Oracle, so look at the params like nfile nproc per user limits and ajust them as needed my machine crashed the second day of production because i didnt know how many users... ( run out of TTYs ) good job I knew how to calculate in hexa and use mknod....
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maxuprc(5) File Formats Manual maxuprc(5)
NAME
maxuprc - limits the maximum number of concurrent user processes per user
VALUES
Failsafe
Default
Allowed values
Recommended value
DESCRIPTION
is a dynamic tunable that limits the maximum number of processes per user. Only root can have more than the number of processes limited by
Who is Expected to Change This Tunable?
System administrators can change the value of depending on the usage of the system.
Restrictions on Changing
None. This tunable is dynamic.
When Should the Value of This Tunable Be Raised?
The value of should be changed if users require more processes than what they are currently allowed by If fails with an error value of it
could be an indication that was reached by that particular user. However, that is not the only reason that could cause to fail with an
errno value of may be returned if system tunable has been reached or memory on the system has been exhausted.
What Are the Side Effects of Raising the Value?
Raising the value of allows a single user to consume a greater percentage of the system resources.
When Should the Value of This Tunable Be Lowered?
The value of should be lowered when individual users are monopolizing system resources by running too many concurrent processes.
What Are the Side Effects of Lowering the Value?
Applications that depend on a large number of processes may behave differently or fail. Existing processes will continue to run but new
process creations which would result in the user exceeding will fail.
What Other Tunable Values Should Be Changed at the Same Time?
When tuning you should keep in mind the value of
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its meaning changed in future releases of
HP-UX.
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun-
able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was
factory installed on your system, see at
AUTHOR
was developed by HP.
SEE ALSO
nproc(5).
Tunable Kernel Parameters maxuprc(5)