Oracle Audio Technologies B31679-01 Other Client Server Settings Replication, Hp-Ux, Semaphores

Other Client/

Server

Settings

Replication

The maximum number of concurrent IPC connections to a TimesTen Server allowed by TimesTen is 9,999. However, system limits can take precedence on the number of connections to a single DSN. Client/ Server users can increase the file descriptor limit to support a large number of connections and processes.

For example, on Solaris, you may change the file descriptor limit to have a maximum of 1024 simultaneous server connections by adding the line:

set rlim_fd_max = 1080

in /etc/system.

In this case, 1080 is greater than the number of anticipated client/server connections and allows for a few extra connections.

AIX

For replication, TCP send and receive buffers should be increased to a minimum of 512KB. You may need to embed the following commands into a script that can be run at system boot time:

#/usr/sbin/no -p -o tcp_recvspace=524288

#/usr/sbin/no -p -o tcp_sendspace=524288

	HP-UX
Semaphores	On HP-UX systems, to connect to more than 2 data stores
	simultaneously, you must increase the value of the kernel parameter
	semmns.
	To view existing kernel parameter settings, log in as user root.
	For HP-UX 11i, use the command:
	# /usr/sbin/kmtune
	For HP-UX 11iv2, use the command:
	# /usr/sbin/kctune
Shared	On HP-UX systems, you also must increase the value of the parameter
memory	shmmax. To make these changes:

1.Use the kmtune or kctune commands above, or run the HP System Administration Manager to see existing kernel parameter settings:

# /usr/sbin/sam

2.Double-click Kernel Configuration, then double-click Configurable Parameters.

26Oracle TimesTen In-Memory Database Installation Guide