Introduction to NonStop Operations Management

Application Management
Introduction to NonStop Operations Management–125507
11-12
Client/Server Processing
Operations
When managing client/server processing applications, your most important concerns
should be to:
•
Follow the guidelines for managing OLTP applications.
•
Monitor LAN connections. Check the EMS log (using the TSM EMS Event Viewer)
for connection errors, session errors, I/O errors, and application program errors.
•
Maintain transaction logs for both the client and its server. The most common
client/server failure is a transient error in the client, network, or server that requires
the user to reboot or restart an application.
Reestablishing a session can take a long time if the client lacks past transaction
information. After the session is reestablished, the client is forced to perform queries
to determine the status of transactions that were in process when the session was
disrupted.
Figure 11-4. Complex Client/Server Environment
903
Y fabric
E1SA
(1,0)
E1SA
(0,1)
E1SA
(3,2)
E1SA
(2,3)
Ethernet Ethernet
MFIOB
(0,1)
MFIOB
(1,0)
Ethernet
Differential
SCSI
Ethernet
Differential
SCSI
X fabric
MFIOB
(2,3)
MFIOB
(3,2)
Ethernet
Differential
SCSI
Ethernet
Differential
SCSI
Processor
XY
0
Processor
XY
1
Processor
XY
2
Processor
XY
3
SWAN
E1SA
MFIOB
Legend
= Ethernet 1 ServerNet Adapter
= Multifunction I/O Board