Oracle Audio Technologies B31679-01 - Manual (Page 42)

34 Oracle TimesTen In-Memory Database Installation Guide
To increase the maximum data segment (malloc space) a process may
use, change the kernel values
per_proc_data_size and
max_per_proc_data_size
For example, to change all of these values to 10GB:
1. Create a text file, kernelparams , that contains the following:
per_proc_address_space = 10737418240
max_per_proc_address_space = 10737418240
per_proc_data_size = 10737418240
max_per_proc_data_size = 10737418240
2. Log in as root and run the command:
# sysconfigdb -m -f kernelparams proc
3. You may need to reboot the system after you have made these changes.
Alternatively, you can run the command:
# sysconfig -q proc
4. To view the value of the proc kernel subsystem, run the command:
% sysconfig -r subsys ttr=value
Shared
memory IPC
client
connections
On Tru64 UNIX, to have more than 6 ShmIpc-enabled Client DSN
connections per process, you must make changes to the SHMSEG
kernel parameter. Kernel parameters can be changed with either the
dxkerneltuner interface or the
sysconfigdb command.
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:
# sysconfig -r inet tcp_recvspace=524288
# sysconfig -r inet tcp_sendspace=524288
Default installation directories
The TimesTen default installation directories for release 7.0 are:
• On Windows, C:\TimesTen\ tt70
• On HP-UX, Solaris and Linux, /opt/ TimesTen/tt70
• On AIX, /usr/lpp/TimesTen /tt70
TimesTen creates temporary files when large amounts of space in a data
store are freed by a transaction. In addition, other TimesTen operations,
such as
ttRepAdmin -duplicate operations and large deletes, use the
temporary directory when copying files.