Error backing up Lotus Domino databases!

[Sanchezz86]

Hi all,
I am from Moscow, I'm sorry for my english..
Asking for your help.

I make a backup using the module NMDA.

The following error occurs:

sh: ps: not found
sh: grep: not found
semid 33554445: Too many open files
The smBItem shared memory (size = 4312020) creation call failed, errno = 24 (Too many open files).

I have the following configuration:
-server Networker 7.6 sp.1
-module NMDA
-Lotus Server 7.3 on OS AIX 5.3 ,limits are increased.
-configuration backup:
Backup configuration:

LOTUS_USER = notes
NSR_BACKUP_LOTUS_DIR = TRUE
NSR_FOLLOW_LINKS = FALSE
NSR_LOTUS_DATA_DIR = /notes/data
NSR_NOTES_INI_PATH = /notes/data/notes.ini
NSR_PARALLELISM = 4
NSR_RESOURCE_DIR = /opt/ibm/lotus/notes/latest/ibmpow/res/C/
Notes_ExecDirectory = /opt/ibm/lotus/notes/latest/ibmpow/
DAOS:
Save set: NOTES:
Backup Type:
Lotus
Deduplication:
None
Checkpoint Enabled:
false
Checkpoint Granularity:
Directory
Pool:
LOTUS
Client Comments:
основной
Remote Access:
sles-emc.scc.local
Browse Policy:
Week
Retention Policy:
Week
Schedule:
Lotus_week
Group:
LOTUS_GROUP

help please!!