Carrying Case Owner's Manual

TimesTen Installation 27
3. Scroll down the list of parameters to semmns and change its value to a
minimum of 4096 or greater.
4. For HP-UX 11i systems, also scroll down the list of parameters to
shmmax and change its value to a maximum of 0x40000000.
Note: The value 0x240000000 (a 24 followed by seven zeroes)
indicates that the largest shared memory segment that can be created is
1024 MB. The size of the shared memory segment required for a shared
data store is larger than the requested data store size. Set this value high
enough to support the largest shared memory segment needed.
5. Recompile the kernel. Choose Create a New Kernel from the Actions
menu.
6. Reboot the system.
Large data
stores
On 64-bit HP-UX systems, if you expect to have data stores that are
larger than 2GB, you must enable large files. By default, HP-UX
supports files that are no greater than 2GB in size.
To enable large files, create the filesystems using
newfs with the -o
largefiles
option. Use the command:
% /usr/sbin/fsadm -F hfs -o largefiles device_name
For example:
% /usr/sbin/fsadm -F hfs -o largefiles \
/dev/vg02/rlvol1
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:
For HP-UX 11i, 11.23 (11iv2)
# /usr/bin/ndd -set /dev/tcp tcp_xmit_hiwater_lfp 524288
# /usr/bin/ndd -set /dev/tcp tcp_recv_hiwater_lfp 524288
# /usr/bin/ndd -set /dev/tcp tcp_xmit_hiwater_lnp 524288
# /usr/bin/ndd -set /dev/tcp tcp_recv_hiwater_lnp 524288
# /usr/bin/ndd -set /dev/tcp tcp_xmit_hiwater_max 524288
# /usr/bin/ndd -set /dev/tcp tcp_recv_hiwater_max 524288
Linux
For Linux, TimesTen has been tested with Red Hat Enterprise Linux 3
and 3.1 and 4, the MontaVista Linux Carrier Grade Edition Release 4.0
and SuSE LINUX Enterprise Server 9 and 10 minimal configurations.