Workaround for ORA-65011: Pluggable database does not exist in an EBS environment

If you have upgraded an EBS database to Oracle 19c, you will also have migrated to the multitenant architechture, which is required.

During the upgrade, Oracle set the parameter _pdb_name_case_sensitive to TRUE by default, as explained in Doc ID 2642230.1.

If you then proceeded to convert your old EBS database to a pluggable database with a lower case name, this has the effect that a "flashback pluggable database" operation will fail when using sqlplus:

oracle@oraserver01:[pdb1]# echo $ORACLE_SID
cdb
oracle@oraserver01:[pdb1]# sqlplus / as sysdba

SQL*Plus: Release 19.0.0.0.0 - Production on Tue Aug 6 10:23:55 2024
Version 19.23.0.0.0

SYS@_container_name SQL> show pdbs

    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED                       READ ONLY  NO
         4 pdb1                           MOUNTED
SYS@_container_name SQL> flashback pluggable database "pdb1" to restore point SD76759_1;
flashback pluggable database "pdb1" to restore point SD76759_1
*
ERROR at line 1:
ORA-65011: Pluggable database PDB1 does not exist.

Workaround: Use RMAN instead

oracle@oraserver01:[pdb1]# rman target /

Recovery Manager: Release 19.0.0.0.0 - Production on Tue Aug 6 10:26:51 2024
Version 19.23.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

connected to target database: CDB (DBID=2245029826)

RMAN> flashback pluggable database "pdb1" to restore point SD76759_1;

Starting flashback at 06-AUG-24

starting media recovery

archived log for thread 1 with sequence 21576 is already on disk as file /oradisk3/recoveryarea/CDB/archivelog/2024_07_11/o1_mf_1_21576__nw9trq2c_.arc
media recovery complete, elapsed time: 00:00:01
Finished flashback at 06-AUG-24