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  <<Back to Oracle RAC Main Page Cloning Oracle RAC Database to Single Instance Database Existing DB ORCL with 2 node (ORCL11 and ORCL12) Closed DB: ORCLN Step1: Add Static Listener Entry Add Static Listener Entry in GRID_HOME/network/admin/listener.ora and reload the listener  SID_LIST_LISTENER =   (SID_LIST =    (SID_DESC =      (GLOBAL_DBNAME = ORCLN)      (ORACLE_HOME = /ora_app/product/19c/dbd1)      (SID_NAME = ORCLN)     )   )  lsnrctl reload LISTENER LSNRCTL for Linux: Version 19.0.0.0.0 - Production on 03-FEB-2026 09:14:16 Copyright (c) 1991, 2023, Oracle.  All rights reserved. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER))) The command completed successfully [+ASM1] lsnrctl status |grep -i ORCLN Service "ORCLN" has 1 instance(s).   Instance "ORCLN", status UNKNOWN, has 1 handler(s) for this service... Step2:Add TNS entry for ORCLN add...

  <<Back to Oracle RAC Main Page Step by Step how to upgrade oracle Clusterware from 11g to 19c RAC Step1> Apply Latest Patch Ensure to download and apply latest (last) available patch. Follow the instruction from below post How to patch oracle 11g RAC Step2> Ensure following patches are applied  Patch Prerequisite 2539751.1 /2180188.1 From GI Home  $GI_HOME/OPatch/opatch lsinventory |grep -e 28553832 -e 17617807 -e 21255373 for DB Home from DB Home if DB also to be upgraded to 19c $DB_HOME/OPatch/opatch lsinventory |grep -e 17617807 -e 21255373 -e 28553832 Managing older database with 19c ASM $GI_HOME/OPatch/opatch lsinventory |grep -e 23186035 Step3> Create Directory  As root user create following directories and change the ownership and permissions accordingly  # mkdir -p /ora_grid/product/19c/grid # cd /ora_grid/product/ # chown -R oracle:oinstall 19c Step4> Unzip Clusterware Software  on first node of the cluster unzip the clusterware...

  Step by Step Upgrading Database using Autoupgrade utility  <<Back to DB Administration Main Page Step1: create config file  java -jar autoupgrade.jar -create_sample_file config /oracle/ORCL/ORCL_autoupgrade.cfg Step2: Adjust the config file  parameters  global.autoupg_log_dir=/ora_app/cfgtoollogs/autoupgrade upg1.log_dir=/ora_app/cfgtoollogs/autoupgrade/ORCL  upg1.sid=ORCL  upg1.source_home=/ora_app/product/12.1.0.2/home12 upg1.target_home=/ora_app/product/19c/home19 upg1.start_time=NOW  upg1.upgrade_node=host1.merckgroup.com upg1.run_utlrp=yes upg1.timezone_upg=yes step3: Run PreCheck java -jar autoupgrade.jar -config /ora_work/ORCL/ORCL_autoupgrade.cfg -mode analyze AutoUpgrade 24.6.240905 launched with default internal options Processing config file ... +--------------------------------+ | Starting AutoUpgrade execution | +--------------------------------+ 1 Non-CDB(s) will be analyzed Type 'help' to list console commands upg> Job 10...

  Oracle Autoupgrade Available Commands <<Back to DB Administration Main Page java -jar autoupgrade.jar -help Usage: java -jar autoupgrade.jar <option(s)> Syntax: <required> [optional] default* options = <run_type1|run_type2|run_type3> run_type1 = -version | -help | -create_sample_file <options> | -listchecks <checkName> run_type2 = [-settings <settings>]             <-config <config>|-config_values <config_values>>             [-mode <mode>]             [-load_password]             [-restore_on_fail]             [-console | -noconsole]             [-debug]             [-clear_recovery_data [-jobs job#,job#,...]]             [-restore -jobs <job#,job#,...>]>     ...

  <<Back to DB Administration Main Page Creating and adjusting the config file for AutoUpgrade 19c Creating and adjusting the config file for AutoUpgrade 19c In this post I will show you , how you can create a simple AutoUpgrade config file and adjust it for a database upgrade. java -jar $OH19/rdbms/admin/autoupgrade.jar -create_sample_file config oracle@host1 :/oracle/software/autoupgrade/$ java -jar autoupgrade.jar -create_sample_file config Created sample configuration file /oracle/software/autoupgrade/sample_config.cfg sample output: cat /ora_stage/software/autoupgrade/sample_config.cfg # # Sample config file for AutoUpgrade # # build version 24.6.240905 # build date    2024/09/05 11:30:40 -0400 # # # Global configurations # # This directory will include the following: #   (1) AutoUpgrade''s global directory #   (2) Any logs, not directly tied to a job #   (3) Config files #   (4) progress.json and status.json global.autou...

  <<Back to DB Administration Main Page Oracle Database AutoUpgrade tool Starting from oracle 19c there is a tool available to upgrade the databases. This is called oracle auto upgrade and is a recommended method  by oracle to upgrade the database. Start using and adopting it  soon this will be only way to upgrade the database  The idea of the tool is to run the prechecks against multiple databases, fix majority  of the potential issues, set a restore point in case something goes wrong – and then upgrade your databases. And of course, do the postupgrade, recompilation and time zone adjustment. The only thing you need to provide is a config file in text format How to download  AutoUpgrade Tool This tool is available with Oracle Database 19c (19.3)  You can download the most recent version from MOS Note: 2485457.1  AutoUpgrade documentation It is all here included in the Oracle Database 19c Upgrade Guide: Using AutoUpgrade for Oracle Data...

  <<Back to Oracle Backup & Recovery Main Page Restoring/Recovering  Table  from RMAN Backup oracle 19c Point In Time table Restore/Recovery in Oracle Today I had a situation where application team accidently deleted data from a table in prod database and wanted to restore it from backup. The requirement was to restore the table with different name washout touching the original table so that the application team can compare it and find out the different eventually deleted rows Before 12.2 the task was complicated and it was achieved by restoring the full database on 3rd server and export  the table from restored database and import it in original database. Oracle has now automated the procedure and made it quite easy. Now you just have to run one command and the rest is taken care by oracle Scenarios Container DB Name: CDBDB Pluggable DB Name: PDB1 Table  to be restored: TEST Schema/Owner of the table: EMPLOYEE New Table Name After Restore:...