Flashback of PDB ORA-39867 打开前一个GRP点后不能再前进了

CHANGES
1. Created Restore Point P1 and then created another Restore Point P2.

SQL> show pdbs;

CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 READ WRITE NO
SQL>
SQL> alter session set container=pdb1;

Session altered.

SQL> create restore point P1 guarantee flashback database;

Restore point created.

SQL>
SQL> create restore point p2 guarantee flashback database;

Restore point created.

SQL> 

2. Flashback PDB to P1 with Resetlogs.

SQL> show pdbs;

CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 MOUNTED
SQL> show con_name

CON_NAME
------------------------------
CDB$ROOT
SQL>

SQL> FLASHBACK PLUGGABLE DATABASE pdb1 TO RESTORE POINT P1;

Flashback complete.

SQL> alter pluggable database pdb1 open resetlogs;

Pluggable database altered. 

3. Flashback PDB to P2

SQL> show pdbs;

CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 PDB1 MOUNTED
SQL>
SQL> FLASHBACK PLUGGABLE DATABASE pdb1 TO RESTORE POINT P2;

FLASHBACK PLUGGABLE DATABASE pdb1 TO RESTORE POINT P2
*
ERROR at line 1:
ORA-39867: Clean PDB restore point 'P2' is on an orphan incarnation of the 
pluggable database.

CAUSE
+ This is expected Behaviour.

+ Flashback of a PDB to direct ancestor incarnations is only allowed. Flashback PDB to a sibling incarnation will report error.

   

         Note :- For more details on incarnations - Refer https://docs.oracle.com/cd/B19306_01/backup.102/b14192/flashptr006.htm

SOLUTION
1. Restore and Recover the entire database to Point in Time (P2). You may also Restore and Recover database to another server and then migrate/Clone the PDB to existing database. 

2. Instead of open PDB in read/write (with resetlogs) open pdb in read only mode.

Note -

          Flashback PDB from P2 to P1 to P0 should work fine.

          Restore and Recovery of PDB1 to P2/SCN/Timestamp will also fail due to incarnation.

SQL>  alter  pluggable database pdb close;   
SQL> flashback pluggable database pdb to restore point PDB_012118;
SQL> alter  pluggable database open read only;

SQL>  alter  pluggable database pdb close;  
SQL>  flashback pluggable database pdb to restore point PDB_012123;
SQL>  alter  pluggable database open read only;

SQL> alter  pluggable database pdb close; 
SQL>  flashback pluggable database pdb to restore point PDB_012123;
SQL> flashback pluggable database pdb to restore point PDB_012118;
SQL> alter  pluggable database pdb open resetlogs;

SQL> alter  pluggable database pdb close;
SQL>  flashback pluggable database pdb to restore point PDB_012123;
flashback pluggable database pdb to restore point PDB_012123
*
ERROR at line 1:
ORA-39867: Clean PDB restore point 'PDB_012123' is on an orphan incarnation of
the pluggable database.