Monday, May 11, 2020

Relocated PDBs in Oracle Database 18c

Oracle 18c allows RMAN backups created before the non-CDB or PDB was migrated into a different target CDB can be used for recovery operations. The COMPATIBLE parameter of the source and Oracle Cloud must be set to 18.0.0 or higher

The RMAN commands used to backup and recovery CDBs and PDBs are the same as those used for non-CDBs, with few variations in the syntax.

The backup and recovery operations performed on non-CDBs can also be performed on CDBs and PDBs. This includes the following:
– Full and incremental backups
– Complete and point-in-time recovery (PITR)
– Reporting operations (such as listing and cross-checking backups)
– Flashback Database

We need take metadata for the existing backups and available to the destination CDB. To export metadata user needs to run DBMS_PDB.EXPORTRMANBACKUP procedure on the source database.

EXECUTE DBMS_PDB.exportrmanbackup();
Or
EXECUTE DBMS_PDB.exportrmanbackup('EMP_PDB');

In case if you are unplug you no need to run this command as unplug already includes the metadata.

Convert NON-CDB to PDB : As we have metadata, now we can covert the NON-CDB instance to PDB.

Step1: Open the non-CDB instance in read-only mode and describe and shutdown

SQL> SHUTDOWN IMMEDIATE;
SQL> STARTUP OPEN READ ONLY;
SQL> BEGIN
DBMS_PDB.DESCRIBE( pdb_descr_file => '/oracle/empdb.xml');
END;
SQL> SHUTDOWN IMMEDIATE;

Step2: Create the new pluggable database using the non-CDB description file that we have taken in above step

SQL> CREATE PLUGGABLE DATABASE empdb_pdb USING '/oracle/empdb.xml' COPY;
SQL> ALTER SESSION SET CONTAINER= empdb_pdb;
SQL> @$ORACLE_HOME/rdbms/admin/noncdb_to_pdb.sql
SQL> ALTER PLUGGABLE DATABASE OPEN;
SQL> ALTER PLUGGABLE DATABASE SAVE STATE;

Step3:- Restore and recovery using pre-plugin backup

SQL> ALTER PLUGGABLE DATABASE empdb_pdb CLOSE IMMEDIATE;

RMAN> SET PREPLUGIN CONTAINER=db18cpdb;
RMAN> RESTORE PLUGGABLE DATABASE empdb_pdb FROM PREPLUGIN;
RMAN> RECOVER PLUGGABLE DATABASE empdb_pdb FROM PREPLUGIN;

Sometimes users may come across RMAN-06054 error in that case you need to CATALOG the missing archive log and start the recovery again.

RMAN-06054: media recovery requesting unknown archived log for thread 3 sequence 94983
RMAN>SET PREPLUGIN CONTAINER= empdb_pdb;
RMAN>CATALOG PREPLUGIN ARCHIVELOG 'oracle/archivelog/arc_empdb_pdb_3_94983.arc';
RMAN>RECOVER PLUGGABLE DATABASE empdb_pdb FROM PREPLUGIN;

Perform normal recovery and open the database

RMAN>RECOVER PLUGGABLE DATABASE empdb_pdb;
RMAN>ALTER PLUGGABLE DATABASE empdb_pdb OPEN;


Reference:
Check preplugin backups available to the CDB instance
RMAN> LIST PREPLUGIN BACKUP OF PLUGGABLE DATABASE empdb_pdb;

Preplugin backups are usable only on the destination CDB into which you plug in the source non-CDB or PDB

Regards
Satishbabu Gunukula, Oracle ACE
http://www.oracleracexpert.com

26 comments:

  1. This comment has been removed by the author.

    ReplyDelete
  2. Packers and Movers Chennai Give Safe and Reliable ***Household Shifting Services in Chennai with Reasonable ###Packers and Movers Price Quotation. We Provide Household Shifting, Office Relocation, ✔ ✔ ✔ Local and Domestic Transportation Services, Affordable and Reliable Shifting Service Charges @ Packers And Movers Chennai

    ReplyDelete
  3. Bet Mr. Santorum's kids just loved finding out what the Left think their name means. Did you dance a little Hitlerian jig when his daughter's hospitalization was announced as the reason for his withdrawal? 123movies

    ReplyDelete
  4. Get Shifting/Relocation Quotation from ###Packers and Movers Delhi. Packers and Movers Delhi 100% Affordable and Reliable ***Household Shifting Services. Compare Transportation Charges and Save Time, Verified and Trusted Packers and Movers in Delhi, Cheap and Safe Local, Domestic House Shifting @ Packers And Movers Delhi

    ReplyDelete
  5. Packers and Movers Gurgaon Provide Reliable, Safe and Certified Service Provider list, Get Free ***Best Price Quotaition and Compare Charges. ???Hassle free Household Shifting Services, High Quality packing Material, Office Relocation, Car Transportaion, ###Local and Domestic Shifting Service @
    Packers And Movers Gurgaon

    ReplyDelete
  6. I like this article.I was searching over search engines and found your blog and its really helps thank you so much @ Packers and Movers mumbai

    ReplyDelete
  7. Get Packers and Movers Kolkata List of Top Reliable, 100% Affordable, Verified and Secured Service Provider. Get Free ###Packers and Movers Kolkata Price Quotation instantly and Save Cost and Time. ???Packers and Movers Kolkata Reviews and Compare Charges for household Shifting, Home/Office Relocation, ***Car Transportation, Pet Relocation, Bike SHifting @ Packers and Movers Kolkata

    ReplyDelete
  8. Get Packers and Movers Jaipur List of Top Reliable, 100% Affordable, Verified and Secured Service Provider. Get Free ###Packers and Movers Jaipur Price Quotation instantly and Save Cost and Time. Packers and Movers Jaipur ✔ ✔ ✔ Reviews and Compare Charges for household Shifting, Home/Office Relocation, ***Car Transportation, Pet Relocation, Bike SHifting @ Packers And Movers Jaipur

    ReplyDelete
  9. Thank you very much for writing such an interesting article on this topic. This has really made me think and I hope to read more. @ Packers and Movers Kolkata

    ReplyDelete
  10. Nice image visibility and well written blog. Thanks for sharing. I have recently come across a new online service provider company which provides Shifting Services @ Packers and Movers Kolkata
    Please Contact Us @ ☎ +91 8290173333

    ReplyDelete
  11. Nice post! This is a very nice blog that I will definitively come back to more times this year! Thanks for informative post.# @ Packers and Movers mumbai

    ReplyDelete
  12. I’m happy I located this blog! From time to time, students want to cognitive the keys of productive literary essays composing. Your first-class knowledge about this good post can become a proper basis for such people. nice one
    PMP Certification
    PMP Course
    PMP Course in Malaysia
    PMP Training in Malaysia

    ReplyDelete
  13. Awesome blog. I enjoyed reading your articles. This is truly a great read for me. I have bookmarked it and I am looking forward to reading new articles. Keep up the good work!
    data analytics course
    big data analytics malaysia
    big data course

    ReplyDelete
  14. Thanks for sharing this information. I really like your blog post very much. You have really shared a informative and interesting blog post with people..
    data science course

    ReplyDelete
  15. You re in point of fact a just right webmaster. The website loading speed is amazing. It kind of feels that you're doing any distinctive trick. Moreover, The contents are masterpiece. you have done a fantastic activity on this subject!
    PMP Certification 360DigiTMG
    PMP Course 360DigiTMG
    PMP Course in Malaysia 360DigiTMG
    PMP Training in Malaysia 360DigiTMG
    PMP Training 360DigiTMG

    ReplyDelete
  16. Awesome blog. I enjoyed reading your articles. This is truly a great read for me. I have bookmarked it and I am looking forward to reading new articles. Keep up the good work!
    data analytics course
    big data analytics malaysia
    big data course

    ReplyDelete
  17. Pretty good post. I just stumbled upon your blog and wanted to say that I have really enjoyed reading your blog posts. Any way I’ll be subscribing to your feed and I hope you post again soon.data science course

    ReplyDelete
  18. Great post i must say and thanks for the information. Education is definitely a sticky subject. However, is still among the leading topics of our time. I appreciate your post and look forward to more. PMP Certification
    PMP Course
    PMP Course in Malaysia
    PMP Training in Malaysia
    PMP Training

    ReplyDelete
  19. What a really awesome post this is. Truly, one of the best posts I've ever witnessed to see in my whole life. Wow, just keep it up.data science course

    ReplyDelete
  20. Awesome blog. I enjoyed reading your articles. This is truly a great read for me. I have bookmarked it and I am looking forward to reading new articles. Keep up the good work!
    data analytics course
    big data analytics malaysia
    big data course

    ReplyDelete
  21. Nice image visibility and well written blog. Thanks for sharing. I have recently come across a new online service provider company which provides Shifting Services @ Packers And Movers Delhi
    Packers And Movers Greater Noida
    Packers And Movers Noida
    Packers And Movers Ghaziabad

    ReplyDelete
  22. This is really a pleasant and useful, containing all data furthermore greatly affect the new innovation. Much obliged for sharing it @
    Packers And Movers Gurgaon
    Packers And Movers Gurgaon to Bangalore
    Packers And Movers Gurgaon to Ahmedabad
    Packers And Movers Gurgaon to Jaipur

    ReplyDelete
  23. Kansas City Chiefs vs. Houston Texans Results. The following is a list of all regular season and postseason games played between the
    Sattamatka

    ReplyDelete