5.8.3 Hot-Upgrade Example

The following example describes a sample scenario for a hot upgrade and the sequence of steps to perform the hot upgrade.

Suppose you have the following on a UNIX platform:
  1. A machine called MACH1 that is configured as the MASTER and that runs an old release.
    • A corresponding application directory called$APPDIR1
    • A corresponding configuration file called $TUXCONFIG1
  2. A machine called MACH2 that is configured as the backup.
    • A corresponding application directory called $APPDIR2
    • A corresponding configuration file called $TUXCONFIG2

The following example describes an example scenario for a hot upgrade and the sequence of steps to perform the hot upgrade:

  1. Ensure that your environment has been set up as follows (for MP mode, you must configure the UBBCONFIG file in the $APPDIR of the MASTER machine).
    1. Refer to the ubbmp file of the sample bank application for reference.
    2. In the resource section of the configuration, the BACKUP MASTER machine must be specified. Follow the steps below:
      • Under the *RESOURCES section, select the value of MASTER as MACH1, MACH2 (where, MACH2 is the backup master machine), the following is the example:

        MASTER      MACH1,MACH2

    3. In the configuration, the MODEL option must be set to MP under the *RESOURCES section.
    4. In the configuration, the MIGRATE option must be set.

      OPTIONS         LAN, MIGRATE

    5. Ensure that the Network section is configured with both NADDR and NLSADDR (both must be on separate ports).
      *NETWORK
MACH1 NADDR="//<MACH1_Hostname>:<naddr_port_number>"
#BRIDGE="/scratch/<user_name>"
NLSADDR="//<MACH1_Hostname>:<nls_port_number>"
MACH2 NADDR="//<MACH2_Hostname>:<naddr_port_number>"
#BRIDGE="/scratch/user_name"
NLSADDR="//<MACH2_Hostname>:<nls_port_number>"
    6. Both the MASTER and BACKUP MASTER machines must be installed with the old Tuxedo version.
    7. Start Tlisten on both the MASTER and BACKUP MASTER machines. In the section of UBBCONFIG Network, you must specify the same address as NLSADDR for the tlisten.
    8. Follow the README of the sample application to generate the server and client files, in this case "simpserv" and "simpcl".
  2. Run the Tmboot command on MACH1 after generating the tmconfig file from the above configuration file. 
     MACH1> tmloadcf -y ubbmp
  3. The Tmboot on Machine1 (MASTER machine) generates a tmconfig on the BACKUP MASTER machine (MACH2)
  4. Use the following command to shut down the backup MASTER machine from MACH1:
    MACH1> tmshutdown -B MACH2 -l MACH2
  5. Use the following command to kill the tlisten process on the backup master machine (MACH2)  
    ps -ef | grep tlisten 
    kill -9 <pid of the tlisten got from above command>
  6. Install the Oracle Tuxedo 22c Release 1 (22.1.0.0.0) software on the backup MASTER machine.
  7. Cd  $Appdir of MACH2 and rm tuxconfig file.
  8. Prior to running tmconfig to update the APPDIR, TUXCONFIG, and TUXDIR for MACH2 on the UBBCONFIG file available in the MACH1, export EDITOR=vi to enable editing in the vi editor:
    MACH1> tmconfig
choose option 2)MACHINES
choose option 5)Update

    TA_LMID<the machine LMID for which you want an update> (You can find the value of LMID in UBBCONFIG file *MACHINES section) 

    TA_APPDIR Value of the new appdir
TA_TUXDIR Value of new tuxdir
TA_TUXCONFIG value of new TUXCONFIG
    TA_LMID MACH2
TA_APPDIR     /scratch/<user_name>/oraHome_22c_load11/tuxedo22.1.0.0.0/samples/atmi/simpapp
TA_APPDIR     /scratch/<user_name>/oraHome_22c_load11/tuxedo22.1.0.0.0
TA_APPDIR     /scratch/<user_name>/oraHome_22c_load11/tuxedo22.1.0.0.0/samples/atmi/tuxconfig
    • Run the command wq! to save and exit
    • Select Y for the confirmation. For more information about tmconfig, see How to Run tmconfig.
    • Run tmunloadcf to verify successful update.
  9. To set PATH, LD_LIBRARY, and TUXDIR to the latest release of Tuxedo, run tux.env from the newly installed Tuxedo product in MACH2.
  10. Ensure TUXCONFIG and APPDIR point to the latest version of Tuxedo.
  11. Use the following command to create a file UPGRADE inside the $APPDIR of MACH2
    touch UPGRADE
  12. In MACH2, export the following Security environment variables: 
    export LLE_DEPRECATION_WARN_LEVEL=NONE
export TM_USE_OLD_CIPHER=Y
export TM_ALLOW_NOTLS=Y
export TM_MIN_PUB_KEY_LENGTH=0
export TM_SECURITY_CONFIG=NONE
  13. Start the Oracle Tuxedo 22c Release 1 (22.1.0.0.0) tlisten in MACH2.
  14. Reboot the backup MASTER machine using the following command from MACH1:
    MACH1> tmboot -B MACH2 -l MACH2 
    verify the tmconfig file generated in this process is located in $APPDIR
  15. Migrate the MASTER machine running the old release to the MASTER machine running the latest release.

    After running the MASTER command, you must not encounter any errors and PSR displays the services running on the machine. 

    MACH2> tmadmin
               master
               y
               psr
               q
  16. Use the following command to kill the tlisten from MACH1: 
    ps -ef | grep tlisten
kill -9 <pid of the tlisten got from above command>
  17. Ensure that Oracle Tuxedo 22c Release 1 (22.1.0.0.0) software is installed on the OLD MASTER machine (MACH1).
  18. Delete the tuxconfig file from $APPDIR of the MACH1 (if it exists).
  19. Run tmconfig file on the MACH 2 to reset the APPDIR, TUXCONFIG, and TUXDIR for MACH1 on the UBBCONFIG file, and then export EDITOR=vi before running tmconfig file to enable the modification to be completed with the vi editor: 
    • MACH2> tmconfig
choose option 2)MACHINES 
choose option 5)Update

      Pass the following variables in key-value pairs with tab to update the details of a specific machine.

    • TA_LMID MACH1 
TA_APPDIR Value of the new appdir 
TA_TUXDIR Value of new tuxdir 
TA_TUXCONFIG value of new TUXCONFIG
    • Run the command wq! to save and exit.
    • Select Y for the confirmation. For more information about tmconfig, see How to Run tmconfig.
    • Run tmunloadcf to verify successful update.
  20. Set the PATH, LD_LIBRARY, and TUXDIR to the latest release of Tuxedo in MACH1 by running the tux.env file from the newly installed Tuxedo product.
  21. Ensure TUXCONFIG and APPDIR point to the latest version of Tuxedo.
  22. Export the following environment variables in MACH1: 
    MACH1>
export LLE_DEPRECATION_WARN_LEVEL=NONE
export TM_USE_OLD_CIPHER=Y
export TM_ALLOW_NOTLS=Y
export TM_MIN_PUB_KEY_LENGTH=0
export TM_SECURITY_CONFIG=NONE
  23. Start the Oracle Tuxedo 22c tlisten in MACH1.
  24. Using the following command to reboot the OLD MASTER machine (MACH1) from the MACH2:
    MACH2> tmboot -B MACH1 -l MACH1 
    Verify tmconfig is generated in $APPDIR in this process.
  25. Delete the UPGRADE command from MACHINE2 $APPDIR

Parent topic: Performing a Hot Upgrade