DB2 Version 9.7 for Linux, UNIX, and Windows

Installation requirements for DB2 Connect server products (AIX)

Before you install DB2 Connect™ server products on AIX® operating systems, ensure that the system you choose meets the necessary operating system, hardware, software, and communications requirements.

Important: For the most up-to-date installation requirements for DB2® database products, you must start using the System requirements for IBM® DB2 for Linux, UNIX, and Windows and System requirements for IBM DB2 Connect technotes. These technotes use IBM Software Product Compatibility Reports (SPCR). With the SPCR tool, you can locate and find complete lists of supported operating systems, system requirements, prerequisites, and optional supported software for DB2 database products. This DB2 Information Centre topic might be removed in a future release or fix pack.

To install a DB2 Connect server product, such as DB2 Connect Enterprise Edition, the following requirements must be met:

Installation requirements

Table 1. AIX installation requirements
Operating System	Hardware
AIX Version 5.3 64-bit AIX kernel is required AIX 5.3 Technology Level (TL) 9 and Service Pack (SP) 2 plus APAR IZ03063 Minimum C++ runtime level requires the xlC.rte 9.0.0.8 and xlC.aix50.rte 9.0.0.8 (or later) filesets. These filesets are included in the June 2008 IBM C++ Runtime Environment Components for AIX package. AIX Version 6.1² 64-bit AIX kernel is required AIX 6.1 TL 2 Minimum C++ runtime level requires the xlC.rte 9.0.0.8 and xlC.aix61.rte 9.0.0.8 (or later) filesets. These filesets are included in the June 2008 IBM C++ Runtime Environment Components for AIX package. Note: POWER7® systems³ require AIX 6.1 TL4. AIX Version 7.1⁴ 64-bit AIX kernel is required AIX 7.1.0 General Availability (GA) Minimum C++ runtime level requires the xlC.rte 11.1.0.0 and xlC.aix61.rte 11.1.0.0 (or later) filesets. These filesets are included in the April 2010 IBM C++ Runtime Environment Components for AIXV11.1 package.	64-bit Common Hardware Reference Platform (CHRP) architecture, excluding POWER3 processor-based systems.¹ All processors that are capable of running the supported AIX operating systems.

¹To verify that it is a CHRP architecture system, issue the command lscfg and look for the following output: Model Architecture: chrp. For POWER3 processor-based systems, first upgrade to POWER4 processor-based systems before installing DB2 Version 9.7. POWER3 processor-based systems are not supported in DB2 Version 9.7.
²In AIX 6.1 there are two types of Workload Partitions (WPARs): system WPARs and application WPARs. DB2 installation is supported only on a system WPAR. AIX 6.1 also supports the ability to encrypt a JFS2 file system or set of files.
³Additional considerations for POWER7 systems:
- If you have IBM Tivoli® System Automation for Multiplatforms (SA MP) 2.2.x or SA MP 3.1.x Reliable Scalable Cluster Technology (RSCT) 2.5.4.0 installed, you must update the RSCT level to a minimum level of RSCT 2.5.4.2. Version 9.7 Fix Pack 2 and later fix packs include an updated version of SA MP which includes an RSCT level that supports POWER7 Systems.
- DB2 products running on POWER7 systems support Active Memory™ Expansion.
⁴To use the DB2 High Availability Feature, you need to apply Version 9.7 Fix Pack 3 or a later fix pack. These fix packs contain an updated version of IBM Tivoli System Automation for Multiplatforms (SA MP)..

Software requirements

Use the bosboot command to switch to the 64-bit kernel.
To switch to a 64-bit kernel, you require root authority and should enter the following commands:
```
   ln -sf /usr/lib/boot/unix_64 /unix
   ln -sf /usr/lib/boot/unix_64 /usr/lib/boot/unix
   bosboot -a
   shutdown -Fr
```
For application development and runtime considerations, see the topics in Supported programming languages and compilers for database application development.
You can download the latest IBM C++ Runtime Environment Components for AIX from the IBM AIX XL C and C++ support Web site.
One of the following browsers is required to view online help and to run First Steps (db2fs):
- Firefox 1.0 and later
- Mozilla-based browsers 1.7 and later
- Safari 3.0 and later
For details regarding known AIX issues, see www.ibm.com/support/docview.wss?&uid=swg21165448

Communication requirements

When using a communication protocol, you have the following requirements:

For TCP/IP connectivity, no additional software is required.
For LDAP (Lightweight Directory Access Protocol) support, you require an IBM SecureWay Directory Client V3.2.1 or later.

DB2 product installation on NFS (Network File System)

The installation of DB2 products on NFS (Network File System) is not recommended. Running DB2 products on NFS (for example, NFS mounting /opt/IBM/db2/V9.5 and then running off code that was physically installed on a remote system) requires several manual setup steps. There are also a number of potential issues with setting up NFS for a DB2 server. These include possible problems that involve:

Performance (impacted by network performance)
Availability (you are allowing a single point of failure)
Licensing (there is no checking done across machines)
Diagnosing NFS errors can be difficult

As mentioned, the setup for NFS will require several manual actions including:

Ensuring that the mount point preserve the install path
Permission must be controlled (for example, write permission should not be given to the mounting machine)
DB2 registries have to be set up manually and maintained across all mounting machines
The db2ls command, which lists installed DB2 products and features, must be set up and maintained properly if you need to detect DB2 products and features
More care is required when updating your DB2 product environment
More steps are required when cleaning up on the exporting machine and the mounting machine

For detailed instructions, see the "Setting up DB2 for UNIX and Linux on NFS mounted file systems" white paper in http://www.ibm.com/developerworks/db2/library/long/dm-0609lee.