26
Oracle TimesTen In-Memory Database Installation Guide
Other Client/
Server
Settings
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
Replication
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
memory
On HP-UX systems, you also must increase the value of the parameter
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
.
