Checking fix pack prerequisites

Ensure that you meet all of the software, hardware and operating system prerequisites before you download a fix pack.

Before downloading a fix pack, perform the following steps:

1. Review the Flashes and open Authorized Problem Analysis Reports (APARs) on the DB2® for Linux, UNIX and Windows product support website: http://www.ibm.com/software/data/db2/support/db2_9/.

   Open APARs describe defects that are not yet addressed in a fix pack, and they might contain workarounds that will impact your use of the database system. For a list of open DB2 for Linux, UNIX and Windows APARs, refer to: http://www.ibm.com/support

2. If you already have a DB2 database product installed and have obtained special fixes, contact IBM support to determine whether you need an updated version of the fixes before you install a fix pack.

   This helps to ensure that your system is in a consistent state and that no special fixes are lost.

3. Ensure that your system meets all of the installation requirements. Run the db2prereqcheck command to determine if your system satisfies the DB2 installation prerequisites. Refer to Checking installation prerequisites by using the db2prereqcheck command .

   This action prevents technical problems that might occur after the installation and configuration of the fix pack.

4. For AIX®, if DB2 database products already exist on the system and the Trusted Computing Base (TCB) is enabled, ensure it is in a consistent state.

   Ensure that the TCB is in a consistent state for any file or directory related to a DB2 instance, the DB2 Administration Server, and installed DB2 files. The TCB can be in an inconsistent state if, for example, DB2 instances were removed without using the db2idrop command.

   To check the TCB state, enter the following command as root:

   tcbck -n ALL

   Refer to AIX documentation for details regarding the Trusted Computing Base.
5. Ensure that you have sufficient file system free space to download and extract the fix pack.

   On Linux and UNIX, you need to have a file system with two gigabyte of free space to contain the .tar.gz file and the uncompressed installation image. If you also plan to install a national language fix pack, you need up to two gigabytes of free space. For DB2 pureScale® feature, verify that sufficient file system free space is available on all members and cluster caching facilities (CFs) in the cluster.

6. Ensure that you have the free space required to install the fix pack.
   The free space must be available in the location of the DB2 copy that you are updating or in the location where you plan to create a new DB2 installation.

   • On Windows, the space required to install the fix pack is equal to the space required for the DB2 Version 10.5 for Linux, UNIX and Windows general availability (GA) installation. Ensure the space required is available in the location of the DB2 copy that you are updating or in the location where you plan to create a new installation of DB2. Refer to Disk and memory requirements.
   • On Linux and UNIX:
     • If you do not already have a DB2 database product installed and you are using the fix pack to create a new installation, refer to Disk and memory requirements.
     • If you already have DB2 database product installed, the space required to install the fix pack is equal to the space consumed by the existing DB2 database products. This space is only required temporarily during the fix pack installation process.
       To determine the space used by the existing DB2 database products, perform the command:

        du -k -s DB2DIR

       where DB2DIR represents the location where the DB2 database product is installed.
7. Optional: Review the "Product overviews" in the DB2 Information Center.