{"id":15114,"date":"2026-01-14T14:02:17","date_gmt":"2026-01-14T17:02:17","guid":{"rendered":"https:\/\/www.dbarj.com.br\/?p=15114"},"modified":"2026-01-29T09:41:34","modified_gmt":"2026-01-29T12:41:34","slug":"upgrade-from-oracle-19c-to-26ai-between-two-different-servers-using-pdb-unplug-plug-with-replay-upgrade","status":"publish","type":"post","link":"https:\/\/www.dbarj.com.br\/en\/2026\/01\/upgrade-from-oracle-19c-to-26ai-between-two-different-servers-using-pdb-unplug-plug-with-replay-upgrade\/","title":{"rendered":"Upgrade from Oracle 19c to 26ai between two different servers using PDB unplug\/plug with Replay Upgrade"},"content":{"rendered":"<p data-start=\"1532\" data-end=\"1694\">In this article, I\u2019ll walk through upgrading <strong data-start=\"1785\" data-end=\"1805\">a single 19c PDB<\/strong> by relocating it from <strong data-start=\"1828\" data-end=\"1852\">Server A to Server B<\/strong> and upgrading it to <strong data-start=\"1873\" data-end=\"1881\">26ai<\/strong> using <strong data-start=\"1888\" data-end=\"1903\">Replay Upgrade<\/strong>.<\/p>\n<p data-start=\"1699\" data-end=\"1904\">Note: this approach is handy when the target database version or operating system differs from the source, or when a full CDB upgrade is not desirable.<\/p>\n<p data-start=\"1699\" data-end=\"1904\">If you want to use AutoUpgrade instead, which makes life much easier, check this article: <a href=\"https:\/\/www.dbarj.com.br\/en\/2026\/01\/upgrade-from-oracle-19c-to-26ai-between-two-different-servers-using-pdb-unplug-plug-with-autoupgrade\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.dbarj.com.br\/en\/2026\/01\/upgrade-from-oracle-19c-to-26ai-between-two-different-servers-using-pdb-unplug-plug-with-autoupgrade\/<\/a><\/p>\n<h3 data-start=\"2071\" data-end=\"2096\">Scope and assumptions<\/h3>\n<ul data-start=\"2099\" data-end=\"2490\">\n<li data-start=\"2099\" data-end=\"2226\">\n<p data-start=\"2101\" data-end=\"2226\">The <strong data-start=\"2105\" data-end=\"2124\">source <\/strong>is Oracle Database <strong data-start=\"2144\" data-end=\"2151\">19c RU 29<\/strong>\u00a0(the same approach applies to 21c, although it is already out of support).<\/p>\n<\/li>\n<li data-start=\"2229\" data-end=\"2286\">\n<p data-start=\"2231\" data-end=\"2286\">The <strong data-start=\"2235\" data-end=\"2254\">target database<\/strong> is <strong data-start=\"2258\" data-end=\"2285\">Oracle AI Database 26ai (23.26.0)<\/strong>.<\/p>\n<\/li>\n<li data-start=\"2289\" data-end=\"2369\">\n<p data-start=\"2291\" data-end=\"2369\">Only a <strong data-start=\"2298\" data-end=\"2312\">single PDB<\/strong> is moved and upgraded; the source CDB remains untouched.<\/p>\n<\/li>\n<li data-start=\"2372\" data-end=\"2488\">\n<p data-start=\"2374\" data-end=\"2488\">Source and target systems have the <strong data-start=\"2409\" data-end=\"2428\">same endianness<\/strong>, although they may run <strong data-start=\"2452\" data-end=\"2487\">different OS releases<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2493\" data-end=\"2517\">Environment overview<\/h3>\n<h5 data-start=\"2522\" data-end=\"2532\"><strong data-start=\"2522\" data-end=\"2532\">Source:<\/strong><\/h5>\n<ul>\n<li data-start=\"2537\" data-end=\"2555\">Oracle Linux 7.9<\/li>\n<li data-start=\"2537\" data-end=\"2555\">Oracle Database 19c (RU 19.29.0)<\/li>\n<\/ul>\n<h5 data-start=\"2592\" data-end=\"2602\"><strong data-start=\"2592\" data-end=\"2602\">Target:<\/strong><\/h5>\n<ul>\n<li data-start=\"2607\" data-end=\"2625\">Oracle Linux 8.7<\/li>\n<li data-start=\"2607\" data-end=\"2625\">Oracle AI Database 26ai (RU 23.26.0)<\/li>\n<\/ul>\n<p data-start=\"2668\" data-end=\"2825\">With these prerequisites in place, we can use <strong data-start=\"2714\" data-end=\"2758\">PDB relocation combined with AutoUpgrade<\/strong> to perform the move and upgrade in a controlled and supported way.<\/p>\n<h3 data-start=\"2668\" data-end=\"2825\">Getting Started<\/h3>\n<p>Before moving the PDB, still in 19c, we need to do some prechecks and fixups to ensure nothing is going to fail. Please note you can&#8217;t perform those checks after you plug into the new 26ai database, as the dictionary becomes invalid until you finish the upgrade process.<\/p>\n<p>So, connected to my server A, first I create the AutoUpgrade config file:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">global.global_log_dir=\/home\/oracle\/autopatch\/logs\r\nupg1.sid=orcl\r\nupg1.source_home=\/u01\/app\/oracle\/product\/19c\/dbhome_1\r\nupg1.target_home=\/u01\/app\/oracle\/product\/26ai\/dbhome_1\r\nupg1.pdbs=PDB01\r\nupg1.restoration=NO\r\nupg1.target_version=23<\/pre>\n<p>Next, I will run the AutoUpgrade pre-checks:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">$ $ORACLE_HOME\/jdk\/bin\/java -jar autoupgrade.jar -config upgrade_pdb.cfg -mode analyze\r\nAutoUpgrade 25.6.251016 launched with default internal options\r\nProcessing config file ...\r\n+--------------------------------+\r\n| Starting AutoUpgrade execution |\r\n+--------------------------------+\r\n1 CDB(s) plus 2 PDB(s) will be analyzed\r\nType 'help' to list console commands\r\nupg&gt; Job 100 completed\r\n------------------- Final Summary --------------------\r\nNumber of databases            [ 1 ]\r\n\r\nJobs finished                  [1]\r\nJobs failed                    [0]\r\n\r\nPlease check the summary report at:\r\n\/home\/oracle\/autopatch\/logs\/cfgtoollogs\/upgrade\/auto\/status\/status.html\r\n\/home\/oracle\/autopatch\/logs\/cfgtoollogs\/upgrade\/auto\/status\/status.log<\/pre>\n<p>Checking the logs, we are good to fly:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">$ cat \/home\/oracle\/autopatch\/logs\/cfgtoollogs\/upgrade\/auto\/status\/status.log\r\n==========================================\r\n          Autoupgrade Summary Report\r\n==========================================\r\n[Date]           Wed Jan 14 16:10:32 GMT 2026\r\n[Number of Jobs] 1\r\n==========================================\r\n[Job ID] 100\r\n==========================================\r\n[DB Name]                orcl\r\n[Version Before Upgrade] 19.29.0.0.0\r\n[Version After Upgrade]  19.29.0.0.0\r\n------------------------------------------\r\n[Stage Name]    PRECHECKS\r\n[Status]        SUCCESS\r\n[Start Time]    2026-01-14 16:09:48\r\n[Duration]      0:00:43\r\n[Log Directory] \/home\/oracle\/autopatch\/logs\/orcl\/100\/prechecks\r\n[Detail]        \/home\/oracle\/autopatch\/logs\/orcl\/100\/prechecks\/orcl_preupgrade.log\r\n                Check passed and no manual intervention needed\r\n------------------------------------------<\/pre>\n<p>Now let&#8217;s run the fixups:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">$ $ORACLE_HOME\/jdk\/bin\/java -jar autoupgrade.jar -config upgrade_pdb.cfg -mode fixups\r\nAutoUpgrade 25.6.251016 launched with default internal options\r\nProcessing config file ...\r\n+--------------------------------+\r\n| Starting AutoUpgrade execution |\r\n+--------------------------------+\r\n1 CDB(s) plus 2 PDB(s) will be processed\r\nType 'help' to list console commands\r\nupg&gt; Job 101 completed\r\n------------------- Final Summary --------------------\r\nNumber of databases            [ 1 ]\r\n\r\nJobs finished                  [1]\r\nJobs failed                    [0]\r\n\r\nPlease check the summary report at:\r\n\/home\/oracle\/autopatch\/logs\/cfgtoollogs\/upgrade\/auto\/status\/status.html\r\n\/home\/oracle\/autopatch\/logs\/cfgtoollogs\/upgrade\/auto\/status\/status.log<\/pre>\n<p>Checking the logs:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">$ cat \/home\/oracle\/autopatch\/logs\/cfgtoollogs\/upgrade\/auto\/status\/status.log\r\n==========================================\r\n          Autoupgrade Summary Report\r\n==========================================\r\n[Date]           Wed Jan 14 16:18:57 GMT 2026\r\n[Number of Jobs] 1\r\n==========================================\r\n[Job ID] 101\r\n==========================================\r\n[DB Name]                orcl\r\n[Version Before Upgrade] 19.29.0.0.0\r\n[Version After Upgrade]  19.29.0.0.0\r\n------------------------------------------\r\n[Stage Name]    PRECHECKS\r\n[Status]        SUCCESS\r\n[Start Time]    2026-01-14 16:12:11\r\n[Duration]      0:00:36\r\n[Log Directory] \/home\/oracle\/autopatch\/logs\/orcl\/101\/prechecks\r\n[Detail]        \/home\/oracle\/autopatch\/logs\/orcl\/101\/prechecks\/orcl_preupgrade.log\r\n                Check passed and no manual intervention needed\r\n------------------------------------------\r\n[Stage Name]    PREFIXUPS\r\n[Status]        SUCCESS\r\n[Start Time]    2026-01-14 16:12:47\r\n[Duration]      0:06:10\r\n[Log Directory] \/home\/oracle\/autopatch\/logs\/orcl\/101\/prefixups\r\n[Detail]        \/home\/oracle\/autopatch\/logs\/orcl\/101\/prefixups\/prefixups.html\r\n------------------------------------------<\/pre>\n<p>Check prefixups.html if you want to get all the actions performed on your PDB to prepare it, like purge recyclebin, collecting dictionary statistics, etc.<\/p>\n<p>Now we are good to fly. Since we are in 2 different servers, I will unplug the PDB from the first server.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"oracledb\">Connected to:\r\nOracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production\r\nVersion 19.29.0.0.0\r\n\r\nSQL&gt; alter pluggable database PDB01 close immediate;\r\n\r\nPluggable database altered.\r\n\r\nSQL&gt; alter pluggable database PDB01 unplug into '\/u01\/app\/oradata\/PDB01.xml';\r\n\r\nPluggable database altered.<\/pre>\n<p>Now it is time to move the PDB data files and XML to the new server:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"shell\">$ rsync -avz \/u01\/app\/oradata\/ORCL\/PDB01\/ oracle@server-26ai:\/u01\/app\/oradata\/ORCL\/PDB01\/\r\nsending incremental file list\r\n.\/\r\nsysaux01.dbf\r\nsystem01.dbf\r\ntemp01.dbf\r\nundotbs01.dbf\r\nusers01.dbf\r\n\r\nsent 377,057,144 bytes  received 114 bytes  9,545,753.37 bytes\/sec\r\ntotal size is 1,458,610,176  speedup is 3.87\r\n\r\n$ rsync -avz \/u01\/app\/oradata\/PDB01.xml oracle@server-26ai:\/u01\/app\/oradata\/PDB01.xml\r\nsending incremental file list\r\nPDB01.xml\r\n\r\nsent 1,751 bytes  received 107 bytes  1,238.67 bytes\/sec\r\ntotal size is 7,628  speedup is 4.11<\/pre>\n<p>Now moving to the new 26ai server, it is time to plug our new database and trigger the Replay Upgrade by simply opening the PDB:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"oracledb\">Connected to:\r\nOracle AI Database 26ai Enterprise Edition Release 23.26.0.0.0 - for Oracle Cloud and Engineered Systems\r\nVersion 23.26.0.0.0\r\n\r\nSQL&gt; create pluggable database PDB01 using '\/u01\/app\/oradata\/PDB01.xml' nocopy tempfile reuse;\r\n\r\nPluggable database created.\r\n\r\nSQL&gt; alter pluggable database PDB01 open;\r\n\r\nWarning: PDB altered with errors.\r\n\r\nSQL&gt; show pdbs\r\n\r\n    CON_ID CON_NAME                       OPEN MODE  RESTRICTED\r\n---------- ------------------------------ ---------- ----------\r\n         2 PDB$SEED                       READ ONLY  NO\r\n         3 PDB01                          READ WRITE YES<\/pre>\n<p><strong>Note: Replay Upgrade has some known issues, especially if your target database was already patched and has moved to a higher RU since it was created. <\/strong><strong>Check this article for more details: <a href=\"https:\/\/www.dbarj.com.br\/en\/2026\/01\/ora-65047-object-is-invalid-or-was-compiled-with-errors-in-the-root\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.dbarj.com.br\/en\/2026\/01\/ora-65047-object-is-invalid-or-was-compiled-with-errors-in-the-root\/<\/a>. If you face any issues, I would recommend using the AutoUpgrade method instead.<\/strong><\/p>\n<p>Our PDB was successfully upgraded. Now all we have to do is call datapatch to finish the upgrade operation:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">$ $ORACLE_HOME\/OPatch\/datapatch\r\nSQL Patching tool version 23.26.0.0.0 Lim on Wed Jan 14 16:58:33 2026\r\nCopyright (c) 2012, 2025, Oracle.  All rights reserved.\r\n\r\nLog file for this invocation: \/u01\/app\/oracle\/product\/26ai\/dbhome_1\/cfgtoollogs\/sqlpatch\/sqlpatch_sid_orcl_ts_2026_01_14_16_58_33_pid_994785\/sqlpatch_invocation.log\r\n\r\nConnecting to database...OK\r\nGathering database info...done\r\n\r\nNote:  Datapatch will only apply or rollback SQL fixes for PDBs\r\n       that are in an open state, no patches will be applied to closed PDBs.\r\n       Please refer to Note: Datapatch: Database 12c Post Patch SQL Automation\r\n       (Doc ID 1585822.1)\r\n\r\nBootstrapping registry and package to current versions...done\r\nDetermining current state...done\r\n\r\nCurrent state of interim SQL patches:\r\n  No interim patches found\r\n\r\nCurrent state of release update SQL patches:\r\n  Binary registry:\r\n    23.26.0.0.0 Release_Update 250927052030: Installed\r\n  PDB CDB$ROOT:\r\n    Applied 23.26.0.0.0 Release_Update 250927052030 successfully on 14-JAN-26 02.13.41.925667 PM\r\n  PDB PDB$SEED:\r\n    Applied 23.26.0.0.0 Release_Update 250927052030 successfully on 14-JAN-26 02.13.42.033770 PM\r\n  PDB PDB01:\r\n    Applied 23.26.0.0.0 Release_Update 250927052030 successfully\r\n\r\nAdding patches to installation queue and performing prereq checks...done\r\nInstallation queue:\r\n  For the following PDBs: CDB$ROOT PDB$SEED\r\n    No interim patches need to be rolled back\r\n    No release update patches need to be installed\r\n    No interim patches need to be applied\r\n  For the following PDBs: PDB01\r\n    No interim patches need to be rolled back\r\n    No release update patches need to be installed\r\n    No interim patches need to be applied\r\n\r\nBypass install queue:\r\n  For the following PDBs: PDB01\r\n    No interim rollbacks will bypass install\r\n    Patch 38404116 (Database Release Update : 23.26.0.0.0 (38404116) Gold Image): will bypass install\r\n      Apply from 23.26.0.0.0 Release_Update 250927052030 to 23.26.0.0.0 Release_Update 250927052030\r\n    No interim applys will bypass install\r\n\r\n\r\nInstallation queue after removing bypass entries...\r\nInstallation queue:\r\n  For the following PDBs: CDB$ROOT PDB$SEED\r\n    No interim patches need to be rolled back\r\n    No release update patches need to be installed\r\n    No interim patches need to be applied\r\n  For the following PDBs: PDB01\r\n    No interim patches need to be rolled back\r\n    No release update patches need to be installed\r\n    No interim patches need to be applied\r\n\r\n\r\nProcessing bypass install queue:\r\n  Patch 38404116 apply (pdb PDB01): SUCCESS (bypass_install)\r\n\r\nSQL Patching tool complete on Wed Jan 14 16:58:44 2026<\/pre>\n<p>Finally, the last step is to bounce the database:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"oracledb\">Connected to:\r\nOracle AI Database 26ai Enterprise Edition Release 23.26.0.0.0 - for Oracle Cloud and Engineered Systems\r\nVersion 23.26.0.0.0\r\n\r\nSQL&gt; alter pluggable database PDB01 close;\r\n\r\nPluggable database altered.\r\n\r\nSQL&gt; alter pluggable database PDB01 open;\r\n\r\nPluggable database altered.\r\n\r\nSQL&gt; show pdbs\r\n\r\n    CON_ID CON_NAME                       OPEN MODE  RESTRICTED\r\n---------- ------------------------------ ---------- ----------\r\n         2 PDB$SEED                       READ ONLY  NO\r\n         3 PDB01                          READ WRITE NO\r\n\r\nSQL&gt;<\/pre>\n<p>And call the post-steps:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">$ $ORACLE_HOME\/jdk\/bin\/java -jar autoupgrade.jar -preupgrade \"dir=\/home\/oracle\/autopatch\/logs,inclusion_list=PDB01\" -mode postfixups\r\nPREUPGRADE logs output location: \/home\/oracle\/autopatch\/logs\r\nAutoUpgrade 25.6.251016 launched with default internal options\r\nProcessing config file ...\r\n+--------------------------------+\r\n| Starting AutoUpgrade execution |\r\n+--------------------------------+\r\n1 PDB(s) will be processed\r\nJob 103 database orcl\r\nJob 103 completed\r\n------------------- Final Summary --------------------\r\nNumber of databases            [ 1 ]\r\n\r\nJobs finished                  [1]\r\nJobs failed                    [0]\r\n\r\nPlease check the summary report at:\r\n\/home\/oracle\/autopatch\/logs\/cfgtoollogs\/upgrade\/auto\/status\/status.html\r\n\/home\/oracle\/autopatch\/logs\/cfgtoollogs\/upgrade\/auto\/status\/status.log<\/pre>\n<p>That&#8217;s it! PDB successfully updated to 26ai.<\/p>\n<b>Have you enjoyed? Please leave a comment or give a \ud83d\udc4d!<\/b>\n<div class='watch-action'><div class='watch-position align-left'><div class='action-like'><a class='lbg-style2 like-15114 jlk' href='javascript:void(0)' data-task='like' data-post_id='15114' data-nonce='de4404f630' rel='nofollow'><img class='wti-pixel' src='https:\/\/www.dbarj.com.br\/wp-content\/plugins\/wti-like-post\/images\/pixel.gif' title='Like' \/><span class='lc-15114 lc'>0<\/span><\/a><\/div><\/div> <div class='status-15114 status align-left'><\/div><\/div><div class='wti-clear'><\/div>","protected":false},"excerpt":{"rendered":"<p>In this article, I\u2019ll walk through upgrading a single 19c PDB by relocating it from Server A to Server B and upgrading it to 26ai using Replay Upgrade. Note: this approach is handy when the target database version or operating system differs from the source, or when a full CDB upgrade is not desirable. 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