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

Issue

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

Background

数据库的Flashback是打开的，测试冷备和恢复

SQL> select * from v$version; BANNER -------------------------------------------------------------------------------- Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production PL/SQL Release 11.2.0.3.0 - Production CORE 11.2.0.3.0 Production TNS for Linux: Version 11.2.0.3.0 - Production NLSRTL Version 11.2.0.3.0 - Production

SQL> select flashback_on from v$database; FLASHBACK_ON ------------------ YES

Process

Backup script:

#!/bin/bash sqlplus / as sysdba <<EOF shutdown immediate; ho cp /u01/app/oracle/oradata/orcl/control01.ctl /rmp/backup/controlfile/contril01.ctl ho cp /u01/app/oracle/fast_recovery_area/orcl/control02.ctl /rmp/backup/controlfile/control02.ctl ho cp /u01/app/oracle/oradata/orcl/*.dbf /rmp/backup/datafile/ ho cp /u01/app/oracle/oradata/orcl/*.log /rmp/backup/logfile/ startup; exit; EOF;

Recover

数据库操作一段时间后，进行恢复，将备份后的文件restore到相应的目录下，打开数据库，出现错误。

SQL> startup ORACLE instance started. Total System Global Area 1603411968 bytes Fixed Size 2228784 bytes Variable Size 973082064 bytes Database Buffers 620756992 bytes Redo Buffers 7344128 bytes Database mounted. ORA-38760: This database instance failed to turn on flashback database

Alter log

Allocated 15937344 bytes in shared pool for flashback generation buffer Starting background process RVWR Tue Jan 05 15:56:45 2016 RVWR started with pid=20, OS id=6507 Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_rvwr_6507.trc: ORA-38739: Flashback log file is more recent than control file. ORA-38701: Flashback database log 2 seq 2 thread 1: "/u01/app/oracle/fast_recovery_area/ORCL/flashback/o1_mf_c8mwpz5j_.flb" Database mounted in Exclusive Mode Lost write protection disabled Completed: alter database mount Tue Jan 05 15:56:52 2016 alter database open Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_6472.trc: ORA-38760: This database instance failed to turn on flashback database ORA-38760 signalled during: alter database open...

Trace log

Trace file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_rvwr_6507.trc Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1 System name: Linux Node name: orcl01 Release: 2.6.32-358.el6.x86_64 Version: #1 SMP Fri Feb 22 00:31:26 UTC 2013 Machine: x86_64 Instance name: orcl Redo thread mounted by this instance: 1 Oracle process number: 20 Unix process pid: 6507, image: oracle@orcl01 (RVWR) *** 2016-01-05 15:56:45.248 *** SESSION ID:(5.3) 2016-01-05 15:56:45.248 *** CLIENT ID:() 2016-01-05 15:56:45.248 *** SERVICE NAME:() 2016-01-05 15:56:45.248 *** MODULE NAME:() 2016-01-05 15:56:45.248 *** ACTION NAME:() 2016-01-05 15:56:45.248 ORA-38739: Flashback log file is more recent than control file. ORA-38701: Flashback database log 2 seq 2 thread 1: "/u01/app/oracle/fast_recovery_area/ORCL/flashback/o1_mf_c8mwpz5j_.flb"

Cause

[oracle@orcl01 ~]$ oerr ora 38760 38760, 00000, "This database instance failed to turn on flashback database" // *Cause: Database flashback is on but this instance failed to // start generating flashback data. Look in alert log for more // specific errors. // *Action: Correct the error or turn off database flashback. [oracle@orcl01 ~]$ [oracle@orcl01 ~]$ oerr ora 38739 38739, 00000, "Flashback log file is more recent than control file." // *Cause: The control file change sequence number in the flashback // database log file was greater than the number in the // control file. This implies that the wrong control file // was being used. Note that repeatedly causing this error // can make it stop happening without correcting the real // problem. Every attempt to open the database will advance the // control file change sequence number until it is great enough. // *Action: FLASHBACK DATABASE can only be used with the current // control file. If it is not available, then a restore // and an incomplete recovery must be performed instead. [oracle@orcl01 ~]$ [oracle@orcl01 ~]$ oerr ora 38701 38701, 00000, "Flashback database log %s seq %s thread %s: \"%s\"" // *Cause: This message reports the filename for details of another message. // *Action: Other messages will accompany this message. See the associated // messages for the appropriate action to take.

Solution

SQL> alter database flashback off; Database altered. SQL> alter database open; Database altered. SQL> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. SQL> startup mount; ORACLE instance started. Total System Global Area 1603411968 bytes Fixed Size 2228784 bytes Variable Size 973082064 bytes Database Buffers 620756992 bytes Redo Buffers 7344128 bytes Database mounted. SQL> alter database flashback on; Database altered. SQL> alter database open; Database altered.