Monthly Archives: September 2026

Oracle Database 26ai : ORA-01017: Invalid Credential or Not Authorized; Logon Denied for EBS 12.2 APPS User After 19c to 26ai Upgrade while executing txkPostPDBCreationTasks.pl

Posted on 9 September 2026 by syedraheeldba.com

The Scenario:I was recently upgrading an Oracle E-Business Suite 12.2.10 environment from Oracle Database 19c (19.32) to Oracle AI Database 26ai (23.26.3) on a single node. Following the official KA1452 upgrade guide, I reached Section 6: Post-Upgrade Tasks, specifically step … Continue reading →