AOS as Load
Balancer
·
The load balancer makes the connection to the
database and determines which AOS the client will connect to
·
This AOS will not accept any client connections
nor do any processing
·
This AOS does not count against your AOS
licenses
AOS Load Balancer
- Client Configuration
·
In the Dynamics AX 4.0/5.0 Configuration utility
you will want to specify the machine name and port number for the AOS load
balancer instance
·
Add AOS member instances after the load balancer
If you do not use a load balancer then you specify all the
AOS member instances in your client configuration. If you do used the load balancer then specify
the load balancer first and then the AOS member instances in case your load balancer
AOS fails.
Database Tuning
Tab
·
Max open cursors
·
Max buffer size
·
Allow index hints in queries
Tracing Tab –
Server Settings
·
SQL Statements
o
Queries issues to the SQL Database
·
Bind variables
o
Parameters specified for each of the SQL queries
·
Row fetch
o
Number of rows returned by SQL
·
Row fetch summary
o
Same as row fetch, and includes timing
information
·
Connect and disconnect
o
Connections and disconnections to SQL
·
Transactions: TTSBegin, TTSCommit, TTSAbort
o
Transaction statistics, not necessary if X++
method tracing is enabled
Tracing Tab – SQL
Settings
·
RPC
round trips to server
o Remote Procedure Calls between Client and
Server
·
X++
method calls
o Method calls within the X++ language
·
Function
Calls
o X++ built in functions such as int2str
·
Number
of nested calls
o Depth of the X++ call stack when collecting
traces
Dynamics AX 2009
features
·
Performance
tab
·
64 bit
·
Batching
·
Time
Zones
Best Practices
·
Separate
AOS’
·
Separation
of environments
·
Monitoring
performance
·
Code
deployment
·
Applying
latest Kernel hotfixes
Separate AOS’
·
Consider
separating out the following processes / components based on load
o Additional Dynamics AX components
o Third Parties
o Batch
Separate out
environments
·
Servers
for production environment should be on dedicated boxes
o Server resources dedicated to production
performance
o Reduce risk of development code utilizing
majority of Servers resources
o Application of hotfixes
o Additional components that need .Net BC
AOS Baselines
·
Performance
Monitor
o Memory
o CPU
·
Memory
usage
o Different times of day
o When specific processes run
Note:
On Dynamics AX 4
memory limitation of 2 Gig for each AX32serv.exe process
•
If
AX32serv.exe consistently around 1.5 gig of memory start evaluating processes
and consider adding another AOS
•
If
AX32serv.exe reaches 1.8 gig of memory you will likely see user connections to
the AOS denied and possibly AOS crashes
On Dynamics AX 2009
if running on Windows Server 64 bit editions the limitation is based on memory
in server.
Proper code
deployment
·
Code
promotion schedule
·
Promote
code during down time
·
Determine
if you will use XPO’s or layers to move code from development/test to
production
·
Test
code in environment that matches production before deploying
Apply Kernel
Hotfixes
·
Improved
Stability
·
Apply on
all machines with a Dynamics AX components
o Dynamics AX client
o Enterprise Portal
o SSRS machine
o Any machine with .Net Business Connector
Troubleshooting
AOS errors
·
Application
event log
·
RPC
errors
·
Connection
issues
·
AOS
Crashing
Application event
log
·
Windows
default event logging tool
·
Different
types of events
o AOS starting
o User errors
o Cache flushing
o Crashes
Events related to
connection
·
Lost
connection to AOS
·
Cannot
or lost connection to SQL
·
Lost
connection to the AOS
Connection to AOS
·
Object
Server 01: RPC error: Client provided an invalid session ID 75
o This error message indicates that the AOS has
crashed. After the AOS crashed a client
that was open when the crash occurred tried to connect to the AOS. Since the AOS was restarted it does not
recognize the existing client connection.
o To resolve this issue the client has to be
shut down and restarted
- Object Server 01: No ping from 77. Terminating the session.
- This error message indicates that the end user ended the client
session before the AOS could return the requested results to the
client.
- To prevent this error message end users shouldn’t end task (ctrl
–alt – delete) their Dynamics AX session.
Instead an end user should contact their AX administrator and have
them end their session from the online users form.
- Object Server 01: SPID 57 for Session Id 77, is still present in the
database. Please delete the SPID from the database.
- This indicates that the end user shut down their Dynamics AX client
before SQL finished processing the
request.
- You can delete the SPID or let SQL finish processing
- If you don’t clean up the SPID it could cause issues such as
blocking transactions, and open transactions which may lead to
transaction log backup failures.
Connection to SQL
·
Object
Server 03: Fatal SQL condition during login. Error message:
"[Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for user
'Corp\axadmin'.“
- This typically indicates the AOS service account does not have
permissions to the database.
- Object Server 03: SQL diagnostics: [Microsoft][ODBC SQL Server
Driver][SQL Server]Login failed for user 'Corp\axadmin'.. Connect
information was: Userid = [], Database = [DAX_Prod], Server = [server1],
DSN = [], Other = []
- This is caused by insufficient SQL permissions.
·
Object
Server 03: Internal Error occurred executing stored procedure when creating
session for the AOS.
o This indicates the AOS Service account does
not have adequate permissions to the stored procedures in the database.
Connection to
application files
·
Error in
file: C:\Program Files \DynamicsAX\ Application\appl\prod \axsys.aod while
reading in record 215B1D0
Windows Error: = Error Code: 64 = The
specified network name is no longer available.
Try again?
o This error indicates the AOS has lost
connection to the Application files.
o To resolve this error message you need to restart
the AOS.