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Oracle诊断:How to deal with ORA-19815

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本文分析了ORA-19815错误的解决方法。

作者：盖国强来源：eygle.com 2007年10月2日

下班的时候,想不到又遇到了ORA-19815错误,这个10g的数据库最近数据量狂增,每天产生大约5~6个G的归档:

ORA-19815: WARNING: db_recovery_file_dest_size of 53687091200 bytes is 85.00% used,
            and has 8052259328 remaining bytes available.
            *************************************************************
            You have the following choices to free up space from
flash recovery area:
1. Consider changing your RMAN retention policy.
   If you are using dataguard, then consider changing your
   RMAN archivelog deletion policy.
2. Backup files to tertiary device such as tape using the
   RMAN command BACKUP RECOVERY AREA.
3. Add disk space and increase the db_recovery_file_dest_size
   parameter to reflect the new space.
4. Delete unncessary files using the RMAN DELETE command.
   If an OS command was used to delete files, then use
   RMAN CROSSCHECK and DELETE EXPIRED commands.

db_recovery_file_dest_size设置的是50G,在当前的备份策略下已经不足够.只好临时扩展一下恢复区:

 SQL> show parameter recov

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest                string      /msflsh
db_recovery_file_dest_size           big integer 50G
recovery_parallelism                 integer     0
SQL> alter system set db_recovery_file_dest_size=65G scope=both;

System altered.

SQL> show parameter recov

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest                string      /msflsh
db_recovery_file_dest_size           big integer 65G
recovery_parallelism                 integer     0

再修改下冗余策略,释放部分磁盘空间:

$ rman target /                                                                  
Recovery Manager: Release 10.1.0.3.0 - 64bit Production                          
Copyright (c) 1995, 2004, Oracle.  All rights reserved.                          
connected to target database: MMSDB (DBID=799462343)                             
RMAN> show all;                                                                  
using target database controlfile instead of recovery catalog                    
RMAN configuration parameters are:                                               
CONFIGURE RETENTION POLICY TO REDUNDANCY 2;                                      
....                                                                             
RMAN> CONFIGURE RETENTION POLICY TO REDUNDANCY 1;                                
old RMAN configuration parameters:                                               
CONFIGURE RETENTION POLICY TO REDUNDANCY 2;                                      
new RMAN configuration parameters:                                               
CONFIGURE RETENTION POLICY TO REDUNDANCY 1;                                      
new RMAN configuration parameters are successfully stored                        
RMAN> delete obsolete;                                                           
RMAN retention policy will be applied to the command                             
RMAN retention policy is set to redundancy 1                                     
allocated channel: ORA_DISK_1                                                    
channel ORA_DISK_1: sid=127 devtype=DISK                                         
Deleting the following obsolete backups and copies:                              
Type                 Key    Completion Time    Filename/Handle                   
-------------------- ------ ------------------ --------------------              
Backup Set           672    27-NOV-05                                            
Backup Piece       672    27-NOV-05                                              
/msflsh/MMSDB/backupset/2005_11_27/o1_mf_annnn_TAG20051127T043004_1rkkggjh_.bkp  
Backup Set           673    27-NOV-05                                            
Backup Piece       673    27-NOV-05                                              
/msflsh/MMSDB/backupset/2005_11_27/o1_mf_annnn_TAG20051127T043004_1rkkh05d_.bkp  
Backup Set           674    27-NOV-05                                            
Backup Piece       674    27-NOV-05                                              
/msflsh/MMSDB/backupset/2005_11_27/o1_mf_annnn_TAG20051127T043004_1rkkhvtb_.bkp  
Backup Set           676    28-NOV-05                                            
Backup Piece       676    28-NOV-05                                              
/msflsh/MMSDB/backupset/2005_11_28/o1_mf_annnn_TAG20051128T043004_1rn5tfoo_.bkp  
Backup Set           718    03-DEC-05                                            
Backup Piece       718    03-DEC-05                                              
/msflsh/MMSDB/autobackup/2005_12_03/o1_mf_s_576045489_1s1d5kgd_.bkp              
Do you really want to delete the above objects (enter YES or NO)? yes            
deleted backup piece                                                             
backup piece handle=/msflsh/MMSDB/backupset/2005_11_27/                          
o1_mf_annnn_TAG20051127T043004_1rkkggjh_.bkp recid=672 stamp=575440206           
deleted backup piece                                                             
backup piece handle=/msflsh/MMSDB/backupset/2005_11_27/                          
o1_mf_annnn_TAG20051127T043004_1rkkh05d_.bkp recid=673 stamp=575440224           
deleted backup piece                                                             
backup piece handle=/msflsh/MMSDB/backupset/2005_11_27/                          
o1_mf_annnn_TAG20051127T043004_1rkkhvtb_.bkp recid=674 stamp=575440251           
deleted backup piece                                                             
backup piece handle=/msflsh/MMSDB/backupset/2005_11_28/                          
o1_mf_annnn_TAG20051128T043004_1rn5tfoo_.bkp recid=676 stamp=575526605           
deleted backup piece                                                             
backup piece handle=/msflsh/MMSDB/autobackup/2005_12_03/                         
o1_mf_s_576045489_1s1d5kgd_.bkp recid=718 stamp=576045489                        
Deleted 5 objects                                                                
RMAN> exit                                                                       
Recovery Manager complete.

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