For some special users like Adminsitrators, who needs to SSH directly into the compute instead of submitting to the scheduler with using root, you may want to do the following:

At the Compute Node

# vim /var/spool/pbs/mom_priv/config

Find the $restrict_user_exceptions

$clienthost 192.168.x.x
$clienthost 192.168.y.y
$restrict_user_maxsysid 999
$restrict_user True
$restrict_user_exceptions user1
$usecp *:/home/ /home/

Restart the PBS Service

# /etc/init.d/pbs restart

Taken from PBS Professional Admin Guide

The Configuration Parameters can be found at /var/spool/pbs/mom_priv/config

$restrict_user <value>

• Controls whether users not submitting jobs have access to this machine. When True, only those users running jobs are allowed access.
• Format: Boolean
• Default: off

$restrict_user_exceptions <user_list>

• List of users who are exempt from access restrictions applied by $restrict_user. Maximum number of names in list is 10.
• Format: Comma-separated list of usernames; space allowed after comma

$restrict_user_maxsysid <value>

• Allows system processes to run when $restrict_user is enabled. Any user with a numeric user ID less than or equal to value is exempt from restrictions applied by $restrict_user.
• Format: Integer
• Default: 999

Example

To restrict user access to those running jobs, add:

$restrict_user True

To specify the users who are allowed access whether or not they are running jobs, add:

$restrict_user_exceptions User1, User2

To allow system processes to run, specify the maximum numeric user ID by adding:

$restrict_user_maxsysid 999

If you are required to restart the daemons of PBS-Professional, do the following at each of the license server

# /etc/init.d/altairlmxd restart

At the client side,

# service pbsworks-pa restart 

If you need to change the Job Attributes AND change the queue in a single command, it will fail

% qalter -l walltime=12:00:00 -q myOldQueue JobID

Step 1: Change the Attribute like walltime

% qalter -l walltime=06:00:00 jobid

Step 2: Move the to a new Queue

% qmove myNewQueue JobID

One of the quickest way to install the PBS Professional Queue is take 1 queue and modify the example

At your node holding the PBS Scheduler

# qmgr -c "print queue @default"

.....
.....
# Create and define queue q64
#
create queue q64
set queue q64 queue_type = Execution
set queue q64 Priority = 100
set queue q64 resources_max.ncpus = 256
set queue q64 resources_max.walltime = 500:00:00
set queue q64 resources_default.charge_rate = 0.04
set queue q64 default_chunk.Qlist = q64
set queue q64 max_run_res.ncpus = [u:PBS_GENERIC=256]
set queue q64 enabled = True
set queue q64 started = True
#
.....
.....

Copy out the information and pipe it into a file

# qmgr -c "print queue q64" > q64_new_queue

Edit the File and save it

# Create and define queue q64_new_queue
#
create queue q64_new_queue
#
set queue q64_new_queue queue_type = Execution
set queue q64_new_queue Priority = 100
set queue q64_new_queue resources_max.ncpus = 256
set queue q64_new_queue resources_max.walltime = 500:00:00
set queue q64_new_queue resources_default.charge_rate = 0.04
set queue q64_new_queue default_chunk.Qlist = q64
set queue q64_new_queue max_run_res.ncpus = [u:PBS_GENERIC=256]
set queue q64_new_queue enabled = True
set queue q64_new_queue started = True
#

Pipe it back to qmgr

# qmgr < q64_new_queue

You should be able to see the new queue

...
...

# Create and define queue q64_new_queue
#
create queue q64_new_queue
#
set queue q64_new_queue queue_type = Execution
set queue q64_new_queue Priority = 100
set queue q64_new_queue resources_max.ncpus = 256
set queue q64_new_queue resources_max.walltime = 500:00:00
set queue q64_new_queue resources_default.charge_rate = 0.04
set queue q64_new_queue default_chunk.Qlist = q64
set queue q64_new_queue max_run_res.ncpus = [u:PBS_GENERIC=256]
set queue q64_new_queue enabled = True
set queue q64_new_queue started = True
#
...
...