cd \/u03\/app\/oracle\/product\/26.1\noracle@OL9-dmk-tests:\/u03\/app\/oracle\/product\/26.1\/ [rdbms1900] .\/runInstaller -silent -setupDBHomeAs \/u01\/app\/oracle\/product\/19.26\nLaunching Oracle AI Database Setup Wizard...\n\n*********************************************\nSwap Size: This is a prerequisite condition to test whether sufficient total swap space is available on the system.\nSeverity: IGNORABLE\nOverall status: VERIFICATION_FAILED\nError message: PRVF-7573 : Sufficient swap size is not available on node \"ol9-dmk-tests\" [Required = 15.0995GB (1.5832984E7KB) ; Found = 2GB (2097148.0KB)]\nCause: The swap size found does not meet the minimum requirement.\nAction: Increase swap size to at least meet the minimum swap space requirement.\n-----------------------------------------------\n*********************************************\nCurrent clock source: Verifies the current clock source configuration\nSeverity: IGNORABLE\nOverall status: VERIFICATION_FAILED\nError message: PRVE-10350 : Current clock source is not set to the expected value on node \"OL9-dmk-tests\" [Expected = \"tsc\" ; Found = \"kvm-clock\"].\nCause: The Configuration Verification Utility (CVU) determined that the\n current clock source was not set to the expected value on\n the indicated node, which would impact the database performance.\nAction: Ensure that the current clock source is set to the expected\n value on the indicated node.\n-----------------------------------------------\n[WARNING] [INS-13014] Target environment does not meet some optional requirements.\n CAUSE: Some of the optional prerequisites are not met. See logs for details. \/u01\/app\/oraInventory\/logs\/InstallActions2026-02-04_06-32-10PM\/installActions2026-02-04_06-32-10PM.log.\n ACTION: Identify the list of failed prerequisite checks from the log: \/u01\/app\/oraInventory\/logs\/InstallActions2026-02-04_06-32-10PM\/installActions2026-02-04_06-32-10PM.log. Then either from the log file or from installation manual find the appropriate configuration to meet the prerequisites and fix it manually.\nThe response file for this session can be found at:\n \/u03\/app\/oracle\/product\/26.1\/install\/response\/db_2026-02-04_06-32-10PM.rsp\n\nYou can find the log of this install session at:\n \/u01\/app\/oraInventory\/logs\/InstallActions2026-02-04_06-32-10PM\/installActions2026-02-04_06-32-10PM.log\n\nAs a root user, run the following script(s):\n\t1. \/u03\/app\/oracle\/product\/26.1\/root.sh\n\nRun \/u03\/app\/oracle\/product\/26.1\/root.sh on the following nodes:\n[OL9-dmk-tests]\n\n\nSuccessfully Setup Software with warning(s).\n<\/code><\/pre>\n\n\n\nI got 2 warnings in prechecks, both ignorable , check if in your case there is nothing more serious, then fix it and rerun again. For my box this 2 warnings are not importatnt.<\/p>\n\n\n\n
First about swap space this can be ignored as this is virtual host with enough RAM memory, <\/p>\n\n\n\n
Second about clock source settings, at this is VM \/ sandbox and this defaults come from KVM I’m ignoring this also, but if you install oracle on bare metal for high performance its worth to consider changing. <\/p>\n\n\n\n
After process finish run as a root
[root@OL9-dmk-tests ~]# \/u03\/app\/oracle\/product\/26.1\/root.sh
Check \/u03\/app\/oracle\/product\/26.1\/install\/root_OL9-dmk-tests_2026-02-04_18-38-13-167364432.log
<\/p>\n\n\n\n
Step 3. Upgrade database 19C to 26.1.<\/h2>\n\n\n\n
In my case we upgrading from 19.26(multitenant already) directly to our 26.1.<\/p>\n\n\n\n
if you upgrading from current release 23 you can run switch homes command:<\/p>\n\n\n\n
$ <TARGET_DB_HOME>\/bin\/dbca -silent -moveDatabase -sourceDB <DB_NAME><\/code><\/code><\/pre>\n\n\n\nif you try this on 19C , process will fail like below
<\/p>\n\n\n\n
oracle@OL9-dmk-tests:\/u03\/app\/oracle\/product\/26.1\/bin\/ [rdbms2300] .\/dbca -silent -moveDatabase -sourceDB DB1926CRSITE\n[FATAL] [DBT-13529] The major version '23.0.0.0.0' of target Oracle home does not match the major version '19.0.0.0.0' of source Oracle home.\n CAUSE: The major version of target Oracle home should match major version of source Oracle home.\n\n<\/code><\/pre>\n\n\n\nWe have to run autoupgrade process as this is recommended process<\/strong>, we can read in oracle Documentation that:<\/p>\n\n\n\n\nSome of the scripts Oracle provides cannot be run in UPGRADE mode.<\/p>\n\n\n\n
\nStarting with Oracle AI Database 26ai, the use of manual scripts to upgrade Oracle Database is desupported.<\/p>\n\n\n\n
AutoUpgrade and Replay Upgrade are the only supported method for upgrading to Oracle AI Database 26ai.<\/p>\n\n\n\n
All other methods, including Database Upgrade Assistant (DBUA), are desupported.<\/p>\n<\/blockquote>\n<\/blockquote>\n\n\n\n
so lets do it with autoupgrade<\/strong><\/p>\n\n\n\nAutoupgrade is small Java API with internal command line<\/strong>, which is powerful tool for databases upgrades, it can be configure with variety of parameters depends your needs, and then start all processes in background.<\/strong> <\/p>\n\n\n\nAs now its Part of Oracle home<\/strong>, you don’t need to install it separately.(you always can if you need some newer features, check metalink for newest version).<\/p>\n\n\n\nso Lets start:<\/p>\n\n\n\n
First we need to create configuration file, you can name it as you like, configuration file can have multiple parameters, but for simple upgrade you need only few, example:<\/p>\n\n\n\n
oracle@OL9-dmk-tests:\/u03\/app\/oracle\/product\/26.1\/ [rdbms2300] cat upgr26ai.cfg\nglobal.global_log_dir=\/home\/oracle\/autoupgrade\/upg26\nupg1.source_home=\/u01\/app\/oracle\/product\/19.26\nupg1.target_home=\/u03\/app\/oracle\/product\/26.1\nupg1.sid=DB1926CRSITE\nupg1.restoration=no\n<\/code><\/pre>\n\n\n\nNext step is only create log folder for global_log_dir parameter and start upgrade process i used restoration=no<\/strong> as my test db is in noarchivelog mode and i don’t need restore points, but on operational system better to have possibility to rollback.<\/p>\n\n\n\nmkdir -p \/home\/oracle\/autoupgrade\/upg26<\/code><\/pre>\n\n\n\noracle@OL9-dmk-tests:\/u03\/app\/oracle\/product\/26.1\/ [rdbms2300] \/u03\/app\/oracle\/product\/26.1\/jdk\/bin\/java -jar \/u03\/app\/oracle\/product\/26.1\/rdbms\/admin\/autoupgrade.jar -mode deploy -config upgr26ai.cfg\nAutoUpgrade 26.5.260117 launched with default internal options\nProcessing config file ...\n+--------------------------------+\n| Starting AutoUpgrade execution |\n+--------------------------------+\n1 CDB(s) plus 2 PDB(s) will be processed\nType 'help' to list console commands\nupg>\n<\/code><\/pre>\n\n\n\nautoupgrade start now upgrade in background <\/p>\n\n\n\n
if you interesting in monitoring progress you can do it by executing lsj -a 30<\/strong> in command line:<\/p>\n\n\n\n<\/p>\n\n\n\n
upg> lsj -a 30\nupg> +----+------------+---------+---------+-------+----------+-------+----------------+\n|Job#| DB_NAME| STAGE|OPERATION| STATUS|START_TIME|UPDATED| MESSAGE|\n+----+------------+---------+---------+-------+----------+-------+----------------+\n| 101|DB1926CRSITE|PREFIXUPS|EXECUTING|RUNNING| 19:19:05|37s ago|Executing fixups|\n+----+------------+---------+---------+-------+----------+-------+----------------+\nTotal jobs 1\n\nThe command lsj is running every 30 seconds. PRESS ENTER TO EXIT\n<\/code><\/pre>\n\n\n\nsecond option is just checking log files in our log folder which we specifed during configuration file:<\/p>\n\n\n\n
\n\noracle@OL9-dmk-tests:~\/autoupgrade\/upg26\/DB1926CRSITE\/101\/ [rdbms1900] tail -f autoupgrade_20260204.log\nelapsed 45 seconds - FixUpTrigger.executeFixUp#246\n2026-02-04 19:21:45.174 INFO [632] FixUp [DICTIONARY_STATS][PDB$SEED] waited for 45 seconds - FixUpTrigger.call#151\n2026-02-04 19:22:13.046 INFO [634] FixUp [DICTIONARY_STATS][EM24REPO] elapsed 72 seconds - FixUpTrigger.executeFixUp#246\n2026-02-04 19:22:30.331 INFO [632] FixUp [DICTIONARY_STATS][PDB$SEED] elapsed 45 seconds - FixUpTrigger.executeFixUp#246\n2026-02-04 19:22:30.332 INFO [88] Running 2 fixups serially - FixUpsRunner.executeBatch#208\n..\n..\n..\n\noracle@OL9-dmk-tests:~\/autoupgrade\/upg26\/DB1926CRSITE\/101\/ [rdbms1900] tail -f autoupgrade_20260204.log\n2026-02-04 19:27:54.370 INFO [1198] [1A3591] Finished - ExecuteSql.doSqlCmds#830\n2026-02-04 19:27:54.370 INFO [1198] SQL*Plus data:5\n - CatctlMonUtils.getCurrentPhaseQuery#393\n2026-02-04 19:27:54.376 INFO [1198] 5%Upgraded CDB$ROOT - CatctlMonUtils.displayCompletionPercentage#247\n2026-02-04 19:27:54.382 INFO [1198] [Upgrading] is [5%] completed for [db1926cr_site1-cdb$root]\n+---------+---------------+\n|CONTAINER| PERCENTAGE|\n+---------+---------------+\n| CDB$ROOT| UPGRADE [5%]|\n| PDB$SEED|UPGRADE PENDING|\n| EM24REPO|UPGRADE PENDING|\n...\n...\n..\n| CDB$ROOT|SUCCESSFULLY UPGRADED [db1926cr_site1-cdb$root]|\n| PDB$SEED| UPGRADE [23%]|\n| EM24REPO| UPGRADE [23%]|\n+---------+-----------------------------------------------+ - CatctlMonUtils.displayCompletionPercentage#269\n\n...\n<\/code><\/pre>\n\n\n\non the end you should see small sum up with details to your logs:<\/p>\n\n\n\n
Job 101 completed\n------------------- Final Summary --------------------\nNumber of databases [ 1 ]\n\nJobs finished [1]\nJobs failed [0]\nJobs restored [0]\nJobs pending [0]\n\n\nPlease check the summary report at:\n\/home\/oracle\/autoupgrade\/upg26\/cfgtoollogs\/upgrade\/auto\/status\/status.html\n\/home\/oracle\/autoupgrade\/upg26\/cfgtoollogs\/upgrade\/auto\/status\/status.log\n\n\n26-02-04 20:18:54.884 INFO [88] Starting background threads for [oracle.upgrade.autoupgrade.dispatcher.facade.subsystems.ExecuteSysUpdates] - JobStage.startThreads#160\n2026-02-04 20:18:54.884 INFO [88] Completed starting background threads for [oracle.upgrade.autoupgrade.dispatcher.facade.subsystems.ExecuteSysUpdates] - JobStage.startThreads#162\n2026-02-04 20:18:54.895 INFO [88] Executing stage SYSUPDATES of job 101 - RunJobDefinition.runJob#141\n2026-02-04 20:18:54.895 INFO [88] Running JobStageAction [oracle.upgrade.autoupgrade.dispatcher.facade.subsystems.ExecuteSysUpdates] - JobStage.executeStage#78\n2026-02-04 20:22:20.598 INFO [88] The status of the JobStageAction [oracle.upgrade.autoupgrade.dispatcher.facade.subsystems.ExecuteSysUpdates] was [true] - JobStage.executeStage#86\n2026-02-04 20:22:20.610 INFO [88] Completed stage SYSUPDATES of job 101 - RunJobDefinition.runJob#149\n2026-02-04 20:22:20.610 INFO [88] Stopping background threads for [oracle.upgrade.autoupgrade.dispatcher.facade.subsystems.ExecuteSysUpdates] - JobStage.stopThreads#169\n2026-02-04 20:22:20.610 INFO [88] Completed stopping background threads for [oracle.upgrade.autoupgrade.dispatcher.facade.subsystems.ExecuteSysUpdates] - JobStage.stopThreads#171\n2026-02-04 20:22:20.635 INFO [88] Adding Job context key[dispatcher_stage] value[12] for job [101] - CommonBackBone.addJobContext#270\n2026-02-04 20:22:20.643 INFO [88] Stopping background threads for Job - JobDefinition.stopJobThreads#132\n2026-02-04 20:22:20.644 INFO [88] [0] threads have been stopped by JobDefinition - JobDefinition.stopJobThreads#134\n2026-02-04 20:22:20.644 INFO [88] Dispatcher finished for 101 - RunJobDefinition.runJob#177\n2026-02-04 20:22:20.644 INFO [88] End - RunJobDefinition.runJob#178\n2026-02-04 20:22:20.671 INFO [88] ----------------------Stages Summary------------------------ - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.671 INFO [88] SETUP <1 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.671 INFO [88] PREUPGRADE <1 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.671 INFO [88] PRECHECKS <1 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.672 INFO [88] PREFIXUPS 3 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.672 INFO [88] DRAIN 2 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.672 INFO [88] DBUPGRADE 43 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.672 INFO [88] DISPATCH <1 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.672 INFO [88] POSTCHECKS <1 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.672 INFO [88] DISPATCH <1 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.672 INFO [88] POSTFIXUPS 9 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.672 INFO [88] POSTUPGRADE <1 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.672 INFO [88] SYSUPDATES 3 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.672 INFO [88] COMPLETED <1 min - Utilities.writeStageSummary#1149\n2026-02-04 20:22:20.672 INFO [88] End of dispatcher instance for DB1926CR_SITE1 - CommonBackBone.finalJobLogging#436\n\n\nEM24REPO(3):Opening pdb with no Resource Manager plan active\nCompleted: Pluggable database EM24REPO opened read write\nCompleted: ALTER DATABASE OPEN \/* db agent *\/\/* {0:0:0} *\/\n2026-02-04T20:21:21.027312+01:00\n===========================================================\nDumping current patch information\n===========================================================\nPatch Id: 38743669\nUnique Patch Id: 28353952\nPatch Description: Database Release Update : 23.26.1.0.0 (38743669) Gold Image\nPatch Apply Time: 2026-01-18T13:03:58+01:00\nPatch Type: Release Update\n\nPatch Id: 38743688\nUnique Patch Id: 28353952\nPatch Description: OCW RELEASE UPDATE 23.26.1.0.0 (GOLD IMAGE) (38743688) Gold Image\nPatch Apply Time: 2026-01-18T13:04:30+01:00\nPatch Type: Release Update\n===========================================================\n2026-02-04T20:21:21.522797+01:00\n<\/code><\/pre>\n\n\n\n! DONE ! <\/p>\n\n\n\n
In my case its take around 40 min to upgrade CDB container and 1 PDB database.<\/p>\n\n\n\n
!! Now you can enjoy your new version !!<\/p>\n\n\n\n
\noracle@OL9-dmk-tests:~\/ [DB1926CRSITE (CDB$ROOT)] sqlplus \"\/ as sysdba\"\n\nSQL*Plus: Release 23.26.1.0.0 - Production on Wed Feb 4 20:28:19 2026\nVersion 23.26.1.0.0\n\nCopyright (c) 1982, 2025, Oracle. All rights reserved.\n\n\nConnected to:\nOracle AI Database 26ai Enterprise Edition Release 23.26.1.0.0 - Production\nVersion 23.26.1.0.0\n\nSQL> select comp_name,version_full,status from dba_registry;\n\nCOMP_NAME\t\t\t\t\t VERSION_FULL \t\t STATUS\n-------------------------------------------------- ------------------------------ -----------\nOracle Database Catalog Views\t\t\t 23.26.1.0.0\t\t\t VALID\nOracle Database Packages and Types\t\t 23.26.1.0.0\t\t\t VALID\nOracle Real Application Clusters\t\t 23.26.1.0.0\t\t\t OPTION OFF\nOracle XML Database\t\t\t\t 23.26.1.0.0\t\t\t VALID\nOracle Workspace Manager\t\t\t 23.26.1.0.0\t\t\t VALID\n\n<\/code><\/pre>\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"
This tutorial showing simple database upgrade to 26ai using traditional method and autoupgrade tool, For operational databases please properly test and plan your upgrade. https:\/\/docs.oracle.com\/en\/database\/oracle\/oracle-database\/26\/fppad\/upgrading-oracle-database-software.html This is one from 3 Articles related to 26.1 upgrade: Step 1. Downloading software and preparing Linux Download Base Gold image from Oracle support software from latest Oracle AI Database […]<\/p>\n","protected":false},"author":148,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[229,198,59],"tags":[3804,1570,1512,73,1766,64,96,2561,278,416,2601],"type_dbi":[],"class_list":["post-42890","post","type-post","status-publish","format-standard","hentry","category-database-administration-monitoring","category-database-management","category-oracle","tag-26ai","tag-autoupgrade","tag-gold-image","tag-linux","tag-metalink","tag-multitenant","tag-oracle","tag-oracle-linux-2","tag-oracle-support","tag-psu","tag-upgrade-2"],"acf":[],"yoast_head":"\n
Database upgrade to AI Database 26ai (23.26.1) for Linux x86-64 upgrade from 19C in 3 steps using gold images. - dbi Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dbi-services.com\/blog\/database-upgrade-to-ai-database-26ai-23-26-1-for-linux-x86-64-upgrade-from-19c-in-3-steps-using-gold-images\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Database upgrade to AI Database 26ai (23.26.1) for Linux x86-64 upgrade from 19C in 3 steps using gold images.\" \/>\n<meta property=\"og:description\" content=\"This tutorial showing simple database upgrade to 26ai using traditional method and autoupgrade tool, For operational databases please properly test and plan your upgrade. https:\/\/docs.oracle.com\/en\/database\/oracle\/oracle-database\/26\/fppad\/upgrading-oracle-database-software.html This is one from 3 Articles related to 26.1 upgrade: Step 1. 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