Installation guide

Note

The default operating system shared memory for some older Linux releases is 32MB. The minimum

required by SAP ASE is 64MB for a default server with 2K pages. A higher value is required if you plan to

increase the SAP ASE

max setting.

3. To guarantee that the minimum operating shared value is applied every time the system is started, edit

the /etc/sysctl.conf file.

4. For larger configurations, it may also be necessary to adjust the shmall parameter.

The default on RHEL5 is 8GB (2097152 4K pages). SuSE 11 and RHEL6 have a default high enough that no

adjustment should be necessary.

5. By default, SAP ASE starts in threaded mode. If you need to switch to process mode, you must adjust the

Linux kernel parameters to maintain compatibility:

a) Add the following in /etc/sysctl.conf:

○ In Linux RHEL 5 and later:

kernel.exec-shield=0

kernel.randomize_va_space=0

○ In SLES 11 and later:

kernel.randomize_va_space=0

b) As super user (root), for the action to take effect, enter:

/sbin/sysctl -P

For information about

○ Kernel modes, see SAP ASE System Administration Guide Volume 2 > Managing Multiprocessor Servers.

○ Exec-Shield, see http://www.redhat.com/f/pdf/rhel/WHP0006US_Execshield.pdf .

6.5.2 Managing Java in the Database During Installations and

Upgrades

If you have enabled Java in the database, create the sybpcidb database before installing or upgrading to SAP

ASE version 16.0.

Procedure

1. Create the sybpcidb database, which stores configuration information for the pluggable component

interface (PCI) and all pluggable component adapter (PCA) components. This database is used by the

installpcidb script. For example:

1> disk init

2> name = "sybpcidb_dev",

Installation Guide for Linux

Planning Your SAP ASE Installation