归档日志过大导致数据库连接失败，解决方法有三种

1.增大db_recovery_file_dest_size值

2：更换归档日志路径

3：检查失效的归档日志文件，然后删除(或者删除N天以前的归档日志)

一.增大db_recovery_file_dest_size值

[oracle@XXXX ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Thu Jun 8 08:18:56 2017

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

SQL> archive log list;

Database log mode              Archive Mode

Automatic archival             Enabled

Archive destination            /u01/arch

Oldest online log sequence     22

Next log sequence to archive   26

Current log sequence           26

SQL> show parameter db_recovery_dest

SQL> show parameter db_recovery

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

db_recovery_file_dest                string    /u01/arch

db_recovery_file_dest_size           big integer 2G

SQL> alter system set db_recovery_file_dest_size=4294967296;                   ---------(4x1024x1024x1024)

System altered.

SQL> show parameter db_recovery_file

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

db_recovery_file_dest                string    /u01/arch

db_recovery_file_dest_size           big integer 4G

二、删除归档日志

[oracle@XXXX ~]$ rman target /

Recovery Manager: Release 10.2.0.1.0 - Production on Thu Jun 8 08:20:28 2017

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

connected to target database: PROD (DBID=322088611)

RMAN> list archivelog all;

using target database control file instead of recovery catalog

List of Archived Log Copies

Key     Thrd Seq     S Low Time  Name

------- ---- ------- - --------- ----

9       1    8       A 11-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_12/o1_mf_1_8_dk9ht6jf_.arc

10      1    9       A 11-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_12/o1_mf_1_9_dk9ht6mk_.arc

11      1    10      A 12-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_12/o1_mf_1_10_dk9ht885_.arc

12      1    1       A 12-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_15/o1_mf_1_1_dkk7df0n_.arc

13      1    2       A 15-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_16/o1_mf_1_2_dkmybt18_.arc

14      1    3       A 16-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_22/o1_mf_1_3_dl3t8q9o_.arc

15      1    4       A 22-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_24/o1_mf_1_4_dl8wdxm6_.arc

16      1    5       A 24-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_5_dlcpcjbg_.arc

17      1    6       A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_6_dlcq4sj5_.arc

18      1    7       A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_7_dlcr1zpt_.arc

19      1    8       A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_8_dld2rxo4_.arc

20      1    9       A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_9_dld2s0dn_.arc

21      1    10      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_10_dld3j48q_.arc

22      1    11      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_11_dld3j5ol_.arc

23      1    12      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_12_dld3j6v4_.arc

24      1    13      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_13_dld3j7dr_.arc

25      1    14      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_14_dld3jfv7_.arc

26      1    15      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_15_dld3jfy6_.arc

27      1    16      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_16_dld3jg0c_.arc

28      1    17      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_17_dld3jg0o_.arc

29      1    18      A 25-MAY-17 /u01/arch1_18_943760710.dbf

30      1    19      A 26-MAY-17 /u01/arch1_19_943760710.dbf

31      1    20      A 26-MAY-17 /u01/arch1_20_943760710.dbf

32      1    21      A 26-MAY-17 /u01/arch1_21_943760710.dbf

33      1    22      A 31-MAY-17 /u01/arch1_22_943760710.dbf

34      1    23      A 08-JUN-17 /u01/arch/1_23_943760710.dbf

35      1    24      A 08-JUN-17 /u01/arch/1_24_943760710.dbf

36      1    25      A 08-JUN-17 /u01/arch/1_25_943760710.dbf

RMAN> delete archivelog all completed before 'sysdate-1';

(删除当前系统时间-1天之前的归档日志)

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=141 devtype=DISK

List of Archived Log Copies

Key     Thrd Seq     S Low Time  Name

------- ---- ------- - --------- ----

9       1    8       A 11-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_12/o1_mf_1_8_dk9ht6jf_.arc

10      1    9       A 11-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_12/o1_mf_1_9_dk9ht6mk_.arc

11      1    10      A 12-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_12/o1_mf_1_10_dk9ht885_.arc

12      1    1       A 12-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_15/o1_mf_1_1_dkk7df0n_.arc

13      1    2       A 15-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_16/o1_mf_1_2_dkmybt18_.arc

14      1    3       A 16-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_22/o1_mf_1_3_dl3t8q9o_.arc

15      1    4       A 22-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_24/o1_mf_1_4_dl8wdxm6_.arc

16      1    5       A 24-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_5_dlcpcjbg_.arc

17      1    6       A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_6_dlcq4sj5_.arc

18      1    7       A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_7_dlcr1zpt_.arc

19      1    8       A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_8_dld2rxo4_.arc

20      1    9       A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_9_dld2s0dn_.arc

21      1    10      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_10_dld3j48q_.arc

22      1    11      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_11_dld3j5ol_.arc

23      1    12      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_12_dld3j6v4_.arc

24      1    13      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_13_dld3j7dr_.arc

25      1    14      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_14_dld3jfv7_.arc

26      1    15      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_15_dld3jfy6_.arc

27      1    16      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_16_dld3jg0c_.arc

28      1    17      A 25-MAY-17 /u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_17_dld3jg0o_.arc

29      1    18      A 25-MAY-17 /u01/arch1_18_943760710.dbf

30      1    19      A 26-MAY-17 /u01/arch1_19_943760710.dbf

31      1    20      A 26-MAY-17 /u01/arch1_20_943760710.dbf

32      1    21      A 26-MAY-17 /u01/arch1_21_943760710.dbf

Do you really want to delete the above objects (enter YES or NO)? yes

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_12/o1_mf_1_8_dk9ht6jf_.arc recid=9 stamp=943760710

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_12/o1_mf_1_9_dk9ht6mk_.arc recid=10 stamp=943760712

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_12/o1_mf_1_10_dk9ht885_.arc recid=11 stamp=943760715

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_15/o1_mf_1_1_dkk7df0n_.arc recid=12 stamp=944014224

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_16/o1_mf_1_2_dkmybt18_.arc recid=13 stamp=944103261

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_22/o1_mf_1_3_dl3t8q9o_.arc recid=14 stamp=944623387

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_24/o1_mf_1_4_dl8wdxm6_.arc recid=15 stamp=944789408

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_5_dlcpcjbg_.arc recid=16 stamp=944881522

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_6_dlcq4sj5_.arc recid=17 stamp=944882331

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_7_dlcr1zpt_.arc recid=18 stamp=944883266

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_8_dld2rxo4_.arc recid=19 stamp=944894238

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_9_dld2s0dn_.arc recid=20 stamp=944894240

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_10_dld3j48q_.arc recid=21 stamp=944894980

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_11_dld3j5ol_.arc recid=22 stamp=944894981

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_12_dld3j6v4_.arc recid=23 stamp=944894982

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_13_dld3j7dr_.arc recid=24 stamp=944894983

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_14_dld3jfv7_.arc recid=25 stamp=944894989

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_15_dld3jfy6_.arc recid=26 stamp=944894989

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_16_dld3jg0c_.arc recid=27 stamp=944894990

deleted archive log

archive log filename=/u01/oracle/app/oracle/flash_recovery_area/PROD/archivelog/2017_05_25/o1_mf_1_17_dld3jg0o_.arc recid=28 stamp=944894990

Deleted 20 objects

RMAN-06207: WARNING: 4 objects could not be deleted for DISK channel(s) due

RMAN-06208:          to mismatched status.  Use CROSSCHECK command to fix status

RMAN-06210: List of Mismatched objects

RMAN-06211: ==========================

RMAN-06212:   Object Type   Filename/Handle

RMAN-06213: --------------- ---------------------------------------------------

RMAN-06214: Archivelog      /u01/arch1_18_943760710.dbf

RMAN-06214: Archivelog      /u01/arch1_19_943760710.dbf

RMAN-06214: Archivelog      /u01/arch1_20_943760710.dbf

RMAN-06214: Archivelog      /u01/arch1_21_943760710.dbf

RMAN> crosscheck archivelog all;

released channel: ORA_DISK_1

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=141 devtype=DISK

validation failed for archived log

archive log filename=/u01/arch1_18_943760710.dbf recid=29 stamp=944960303

validation failed for archived log

archive log filename=/u01/arch1_19_943760710.dbf recid=30 stamp=944969753

validation failed for archived log

archive log filename=/u01/arch1_20_943760710.dbf recid=31 stamp=944969887

validation failed for archived log

archive log filename=/u01/arch1_21_943760710.dbf recid=32 stamp=945401231

validation failed for archived log

archive log filename=/u01/arch1_22_943760710.dbf recid=33 stamp=946109008

validation succeeded for archived log

archive log filename=/u01/arch/1_23_943760710.dbf recid=34 stamp=946109739

validation succeeded for archived log

archive log filename=/u01/arch/1_24_943760710.dbf recid=35 stamp=946109739

validation succeeded for archived log

archive log filename=/u01/arch/1_25_943760710.dbf recid=36 stamp=946109739

Crosschecked 8 objects

RMAN> delete expired archivelog all;

released channel: ORA_DISK_1

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=141 devtype=DISK

List of Archived Log Copies

Key     Thrd Seq     S Low Time  Name

------- ---- ------- - --------- ----

29      1    18      X 25-MAY-17 /u01/arch1_18_943760710.dbf

30      1    19      X 26-MAY-17 /u01/arch1_19_943760710.dbf

31      1    20      X 26-MAY-17 /u01/arch1_20_943760710.dbf

32      1    21      X 26-MAY-17 /u01/arch1_21_943760710.dbf

33      1    22      X 31-MAY-17 /u01/arch1_22_943760710.dbf

Do you really want to delete the above objects (enter YES or NO)? yes

deleted archive log

archive log filename=/u01/arch1_18_943760710.dbf recid=29 stamp=944960303

deleted archive log

archive log filename=/u01/arch1_19_943760710.dbf recid=30 stamp=944969753

deleted archive log

archive log filename=/u01/arch1_20_943760710.dbf recid=31 stamp=944969887

deleted archive log

archive log filename=/u01/arch1_21_943760710.dbf recid=32 stamp=945401231

deleted archive log

archive log filename=/u01/arch1_22_943760710.dbf recid=33 stamp=946109008

Deleted 5 EXPIRED objects

RMAN>list archivelog all;

List of Archived Log Copies

Key     Thrd Seq     S Low Time  Name

------- ---- ------- - --------- ----

34      1    23      A 08-JUN-17 /u01/arch/1_23_943760710.dbf

35      1    24      A 08-JUN-17 /u01/arch/1_24_943760710.dbf

36      1    25      A 08-JUN-17 /u01/arch/1_25_943760710.dbf

RMAN> delete archivelog from time 'sysdate-7';

(删除7天内的归档日志)

released channel: ORA_DISK_1

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=141 devtype=DISK

List of Archived Log Copies

Key     Thrd Seq     S Low Time  Name

------- ---- ------- - --------- ----

34      1    23      A 08-JUN-17 /u01/arch/1_23_943760710.dbf

35      1    24      A 08-JUN-17 /u01/arch/1_24_943760710.dbf

36      1    25      A 08-JUN-17 /u01/arch/1_25_943760710.dbf

Do you really want to delete the above objects (enter YES or NO)? yes

deleted archive log

archive log filename=/u01/arch/1_23_943760710.dbf recid=34 stamp=946109739

deleted archive log

archive log filename=/u01/arch/1_24_943760710.dbf recid=35 stamp=946109739

deleted archive log

archive log filename=/u01/arch/1_25_943760710.dbf recid=36 stamp=946109739

Deleted 3 objects

RMAN> list archivelog all;

specification does not match any archive log in the recovery catalog

RMAN> exit

Recovery Manager complete.

三、更换归档日志路径

见http://blog.itpub.net/29618264/viewspace-2139879/

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