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Chapter 5
It is the same as the GWTDOMAIN's NWADDR configuration in the
DMCONFIG file.
2. You need to put an additional Java option in the WLS start-up command
as follows:
-Djava.net.preferIPv4Stack=true
java command-line
Databases
There is nothing special you need to do to use the database or XA interface, as
this standard is widely supported on all the major database vendor products. You
may want to use SDP for Oracle database invocations, but again, you don't need to
perform anything special in a Tuxedo application. You do however need to configure
the database to support InfiniBand. You can set the two parameters in /etc/
modprobe.conf on the server node for better performance (for example, options
ib_sdp sdp_zcopy_thresh=0 recv_poll=0). It's default value is 64 KB, but the
recommendation is to set it with zero.
The EXALOGIC_MSGQ_CACHE_SIZE variable
The EXALOGIC_MSGQ_CACHE_SIZE environment variable can be used to improve
the performance of the Tuxedo application. This value can be set between 32 and
2,048. One thing to notice is that increasing the number can improve Tuxedo's
performance, but Msgq_daemon consumes more shared memory. So, setting this
environment variable will help you to get better performance during the process
of sending multiple messages to many queues.
Please read the following recommendation from Oracle:
If there are 40 remote Oracle Tuxedo servers providing the same service and clients
call the service 100 times, setting EXALOGIC_MSGQ_CACHE_SIZE to a value
equal to or greater than 40 on the client improves performance.
If there are 50 WSHs, and each WSH receives response messages from the same
remote server, setting EXALOGIC_MSGQ_CACHE_SIZE to a value equal to or
greater than 50 on the server environment improves performance.
Running Oracle Tuxedo
In this section, we will discuss how to start and stop Tuxedo and the tools that are
available for various administrative purposes. There are some differences in running
Tuxedo on a non-Exalogic platform with RDMA features. The tux_msgq_monitor
function must be started before booting a Tuxedo application.
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