Installing on Linux

The following issues affect installation on the Linux Platform:

• On Red Hat Linux 5, the compat-libstdc++ library needed to run C client applications is not included in the Message Queue distribution and is therefore is not installed by the Message Queue installer. If you are developing and running C clients, you need to install this library manually.

  Thecompat-libstdc++ rpm is usually found on the install medium of the Linux version you are using. It can be installed using the following command:

  rpm -ivh compat-libstdc++-x-x.x.x.x..rpm

  where x represents the version number.

  To check that the library has been successfully installed, use the following command:

  rpm -qa | grep compat-libstdc++

• On Red Hat Linux 5, C clients can fail with a PR_LOAD_LIBRARY_ERROR error (Bug 6885978)

  On Red Hat Linux 5, C clients can fail, displaying a message similar to:

  "Preparing for NSS initialization ..." "Initializing NSS ..." "Could not connect to broker because 'PR_LOAD_LIBRARY_ERROR' (-5977)." producer(): Error: PR_LOAD_LIBRARY_ERROR

  This error arises because the NSS/NSPR libraries are not accessible.

  To resolve this issue, set the LD_LIBRARY_PATH environment variable to include the path to the NSS/NSPR libraries, IMQ_HOME/nss/lib.

• On the JDK Selection panel, the scroll list displays only one item. This makes it difficult to select other JDK's in the list. (Bug 6584735)

• If the JDK is current and the user selects “Install default JDK” on the JDK Selection Screen, the installer still tries to install it and reports that it cannot install the package. Installation completes successfully despite this issue. (Bug 6581310)

• If the currently installed JDK is a later version than JDK 1.5.0_15 (the version normally installed by the Message Queue installer), then the Message Queue uninstaller cannot find the default IMQ_JAVAHOME directory and returns an error. (Bug 6673415)

  Workaround: Install JDK 1.5 manually as follows before running the Message Queue uninstaller.

  # cd installImage/Product/UNIX/LINUX/X86/2.4/Packages

  # rpm -i --force jdk-1.5.0_15–linux-arch.rpm

  where arch is either i586 or amd64.

• When the installer is run in dry run mode (installer –n), the Summary Screen shows some error messages and also displays an install status of “Incomplete”. This is incorrect and misleading; a dry run does not install anything on the system; it only creates the answer file that can be subsequently used to perform a silent install. (Bug 6594351)