ORA-38760: This database instance failed to turn on flashback database

Hi,

When you startup Oracle Database, you can get ” ORA-38760: This database instance failed to turn on flashback database ” error.

 

When I startup Oracle database, I got following error.

[oracle@MehmetSalih ~]$ sqlplus / as sysdba

SQL*Plus: Release 12.1.0.2.0 Production on Tue May 28 14:51:53 2019

Copyright (c) 1982, 2011, Oracle. All rights reserved.

Connected to an idle instance.

SQL> startup
ORA-32004: obsolete or deprecated parameter(s) specified for RDBMS instance
ORACLE instance started.

Total System Global Area 2.1379E+10 bytes
Fixed Size 2237776 bytes
Variable Size 8522828464 bytes
Database Buffers 1.2818E+10 bytes
Redo Buffers 36098048 bytes
Database mounted.
ORA-38760: This database instance failed to turn on flashback database

 

 

 

 

 

Try to disable Flashback and open database, or try to enable Flashback to see What is going on.

SQL> alter database flashback off;

Database altered.

SQL> 
SQL> 
SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-38760: This database instance failed to turn on flashback database


SQL> alter database flashback on;
alter database flashback on
*
ERROR at line 1:
ORA-38706: Cannot turn on FLASHBACK DATABASE logging.
ORA-38714: Instance recovery required.

 

 

Database is not opened, so we need to drop restore point that is created in the past. Find it and drop this restore point like following.

 

SQL> select NAME,SCN,GUARANTEE_FLASHBACK_DATABASE,DATABASE_INCARNATION# from v$restore_point;

NAME
--------------------------------------------------------------------------------
SCN GUA DATABASE_INCARNATION#
---------- --- ---------------------
RESTORE_POINT_17052019
5.9932E+12 YES 1


SQL> 
SQL> 
SQL> drop restore point RESTORE_POINT_17052019;

Restore point dropped.

 

After Restore point is dropped, we can open database like following.

 

SQL> alter database open;

Database altered.

Mehmet Salih Deveci

I am Founder of IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience. I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource. I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks. I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients. If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress mehmetsalih.deveci@outlook.com. -                                                                                                                                                                                                                                                 - Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  mehmetsalih.deveci@outlook.com a mail atabilirsiniz.