Oracle RAC database upgrade from 12c to 19c DBUA
Oracle RAC database upgrade from 12c to 19c DBUA By Real World Oracle | 12 SEPT 2025 Table of Contents _______________________________________ Introduction Oracle RAC database upgrade using DBUA PRECHECK UPGRADE Conclusion _______________________________________________ Introduction In this article, I will show a detailed step-by-step guide of an Oracle RAC database upgrade from 12c to 19c using the DBUA tool. Oracle RAC database upgrade using DBUA We will perform the Oracle RAC database upgrade in 2 parts. 1) PRECHECK 2) UPGRADE PRECHECK Precheck is the first step in the Oracle RAC database upgrade. Step 1) Check the database status [oracle@lab1 ~]$ srvctl status database -d UATDB Instance UATDB1 is running on node lab1 Instance UATDB2 is running on node lab2 Step 2) Spfile and pfile backup SQL> create pfile='/tmp/initUATDB1.ora' from spfile; File created. Step 3) Database Archive Log mode Note: – Before performing the Oracle RAC da...