{"id":7200,"date":"2021-02-15T19:16:43","date_gmt":"2021-02-15T19:16:43","guid":{"rendered":"https:\/\/rax-stg-wp-aws.com\/blogs\/upgrade-oracle-grid-from-12c-to-19c\/"},"modified":"2026-11-03T19:28:12","modified_gmt":"2026-11-03T19:28:12","slug":"upgrade-oracle-grid-from-12c-to-19c","status":"publish","type":"blogs","link":"https:\/\/www.rackspace.com\/de\/blogs\/upgrade-oracle-grid-from-12c-to-19c\/","title":{"rendered":"Upgrade Oracle Grid from 12c to 19c"},"content":{"rendered":"

Introduction<\/strong><\/p>\n

This post covers a step-by-step approach for upgrading a two-node Oracle Grid Real Application Cluster (RAC) from version 12C (12.1.0.2) to 19C (19.7.0) that runs on a Linux operating system (OS).<\/p>\n

The latest available version for Oracle Grid RAC is 19c. Oracle highly recommends upgrading your Grid infrastructure to 19c for better stability and security. In 19c, Oracle introduced many new features such as dry-run upgrades. This post discusses this new feature and the steps to upgrade Grid.<\/p>\n

Steps to upgrade Grid<\/strong><\/p>\n

    \n
  1. Review the pre-upgrade checklist.<\/li>\n
  2. Download 19c Grid software.<\/li>\n
  3. Run the Orachk readiness assessment. <\/li>\n
  4. Apply mandatory 19c patches. <\/li>\n
  5. Run the cluster verification utility. <\/li>\n
  6. Dry-run upgrade.<\/li>\n
  7. Upgrade Grid.<\/li>\n
  8. Verify Grid upgrade.<\/li>\n<\/ol>\n

    \"19c<\/p>\n

    1. Pre-upgrade checklist <\/strong><\/p>\n

    According to the [Oracle Document 2539751.1<\/a>](), you must apply the 28553832 patch in the 12C Grid home directory as a prerequisite:<\/p>\n

    \n    [grid@norlathrac01 OPatch]$ .\/opatch lsinventory |grep -i 28553832
    \n    28553832, 20883009, 21678268<\/em><\/p>\n

    2. Download the Grid Software<\/strong><\/p>\n

    You can download the 19c Grid software from the following links:<\/p>\n

    Link 1<\/a><\/p>\n

    Link 2<\/a><\/p>\n

    Create a directory on both the RAC (Real Application Cluster) nodes:<\/p>\n

        mkdir -p \/u01\/app\/grid\/product\/19.3.0\/grid<\/em><\/p>\n

    Copy the 19c grid software to the first node of RAC and unzip it.:<\/p>\n

        cd \/u01\/app\/grid\/product\/19.3.0\/grid
    \n    unzip -q <19c Grid Software location ><\/em><\/p>\n

    3. Run Orachk readiness assessment<\/strong><\/p>\n

    According to Oracle document 1457357.1<\/a>, the user that owns Grid needs to run the `Orachk`<\/em> tool. Make sure to download the latest version of Orachk<\/em> from document 1457357<\/a>.1, then run the following commands:<\/p>\n

      cd \/u01\/app\/grid\/product\/19.3.0\/grid\/suptools\/orachk
    \n    export GRID_HOME= \/u01\/app\/grid\/product\/19.3.0\/grid
    \n    export RAT_PROMPT_WAIT_TIMEOUT=15
    \n    export RAT_ORACLE_HOME=\/u01\/app\/grid\/12.1.0
    \n    export RAT_DB=12.1.0.2.0
    \n    cd \/u01\/app\/grid\/product\/19.3.0\/grid\/suptools\/orachk
    \n    .\/orachk -u -o pre -profile clusterware,asm<\/em><\/p>\n

    \nThis process generates an HTML report as shown in the following image: <\/p>\n

    \"19c<\/p>\n

     
    \nMake sure to review the report for all failed, critical, and warning checks and resolve them before you move to the next step.<\/p>\n

    4. Apply Mandatory 19c Patches<\/strong><\/p>\n

    You need to apply the mandatory patch 30899722 in the 19c home directory, as recommended by this Oracle Document<\/a>.<\/p>\n

        [grid@norlathrac01 grid]$ pwd
    \n    \/u01\/app\/grid\/product\/19.3.0\/grid
    \n    [grid@norlathrac01 grid]$ .\/gridSetup.sh -silent -applyRU<\/em><\/p>\n

    Execute the following command on node [norlathrac01] as root:<\/p>\n

        \/u01\/app\/grid\/product\/19.3.0\/grid\/root.sh <\/em>
    \n    Successfully Setup Software.<\/p>\n

    Finally, it asks to run root.sh<\/strong>. Do not run the script yet because you need to run it at the end of the upgrade.<\/p>\n

    After applying the patch, run the following command and make sure the command shows as supported:<\/p>\n

        [grid@norlathrac01 bin]$ pwd
    \n    \/u01\/app\/grid\/product\/19.3.0\/grid\/usm\/install\/Oracle\/EL7UEK\/x86_64\/4.1.12-112.16.4\/4.1.12-112.16.4-x86_64\/bin
    \n    [grid@norlathrac01 bin]$ .\/acfsdriverstate -orahome \/u01\/app\/grid\/product\/19.3.0\/grid supported
    \n    ACFS-9200: Supported<\/em><\/p>\n

    5. Run the cluster verification utility<\/strong><\/p>\n

    Log in as the Grid OS owner user and run the following commands:<\/p>\n

        [grid@norlathrac01 ~]$ cd \/u01\/app\/grid\/product\/19.3.0\/grid\/
    \n    [grid@norlathrac01 grid]$ .\/runcluvfy.sh stage -pre crsinst -upgrade -rolling -src_crshome \/u01\/app\/grid\/12.1.0 -dest_crshome \/u01\/app\/grid\/product\/19.3.0\/grid -dest_version 19.0.0.0.0 -fixup -verbose<\/em><\/p>\n

    This operation should pass all the following checks:<\/p>\n