做dg时遇到的log_archive_dest、log_archive_dest_1、db_recovery_file_dest之间互相影响

前提：归档开启。默认不指定归档文件夹。

今晚遇到客户那里设置了闪回区和log_archive_dest。不停库做DG时，无法指定log_archive_dest_n參数，巨坑。

。实验了下。结论例如以下：

数据库版本号:ORACLE10.2.0.1

1.未设置闪回区时，能够动态配置log_archive_dest或log_archive_dest_1

2.配置闪回区时，不能够动态配置log_archive_dest

3.配置了闪回区和log_archive_dest后。不可动态配置log_archive_dest或log_archive_dest_1

1.未设置闪回区时。能够动态配置log_archive_dest或log_archive_dest_1

SQL> alter database archivelog;

Database altered.

SQL> alter database open;

Database altered.

SQL> show parameter log_archive

NAME TYPE VALUE

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

log_archive_config string

log_archive_dest string /home/oracle/

log_archive_dest_1 string

log_archive_dest_10 string

log_archive_dest_2 string

log_archive_dest_3 string

log_archive_dest_4 string

log_archive_dest_5 string

log_archive_dest_6 string

log_archive_dest_7 string

log_archive_dest_8 string

NAME TYPE VALUE

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

log_archive_dest_9 string

log_archive_dest_state_1 string enable

log_archive_dest_state_10 string enable

log_archive_dest_state_2 string enable

log_archive_dest_state_3 string enable

log_archive_dest_state_4 string enable

log_archive_dest_state_5 string enable

log_archive_dest_state_6 string enable

log_archive_dest_state_7 string enable

log_archive_dest_state_8 string enable

log_archive_dest_state_9 string enable

NAME TYPE VALUE

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

log_archive_duplex_dest string

log_archive_format string %t_%s_%r.dbf

log_archive_local_first boolean TRUE

log_archive_max_processes integer 2

log_archive_min_succeed_dest integer 1

log_archive_start boolean FALSE

log_archive_trace integer 0

SQL> alter system set log_archive_dest='';

System altered.

SQL> show parameter recover

NAME TYPE VALUE

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

db_recovery_file_dest string

db_recovery_file_dest_size big integer 0

recovery_parallelism integer 0

2.配置闪回区时，不能够动态配置log_archive_dest

SQL> show parameter log_archive

NAME TYPE VALUE

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

log_archive_config string

log_archive_dest string

log_archive_dest_1 string

log_archive_dest_10 string

log_archive_dest_2 string

log_archive_dest_3 string

log_archive_dest_4 string

log_archive_dest_5 string

log_archive_dest_6 string

log_archive_dest_7 string

log_archive_dest_8 string

log_archive_dest_9 string

log_archive_dest_state_1 string enable

log_archive_dest_state_10 string enable

log_archive_dest_state_2 string enable

log_archive_dest_state_3 string enable

log_archive_dest_state_4 string enable

log_archive_dest_state_5 string enable

log_archive_dest_state_6 string enable

log_archive_dest_state_7 string enable

log_archive_dest_state_8 string enable

log_archive_dest_state_9 string enable

log_archive_duplex_dest string

log_archive_format string %t_%s_%r.dbf

log_archive_local_first boolean TRUE

log_archive_max_processes integer 2

log_archive_min_succeed_dest integer 1

log_archive_start boolean FALSE

log_archive_trace integer 0

SQL> alter system set log_archive_dest='/home/oracle/';
----不可动态改动

alter system set log_archive_dest='/home/oracle/'

*

ERROR at line 1:

ORA-02097: parameter cannot be modified because specified value is invalid

ORA-16018: cannot use LOG_ARCHIVE_DEST with LOG_ARCHIVE_DEST_n or

DB_RECOVERY_FILE_DEST

SQL> alter system set log_archive_dest_1='location=/home/oracle/'; -----可动态改动

System altered.

SQL> alter system set log_archive_dest_1='';

System altered.

SQL> alter system set log_archive_dest='/home/oracle/' scope=spfile;

3.配置了闪回区和log_archive_dest后，不可动态配置log_archive_dest或log_archive_dest_1

SQL> startup

ORACLE instance started.

Total System Global Area 524288000 bytes

Fixed Size 1220360 bytes

Variable Size 150995192 bytes

Database Buffers 369098752 bytes

Redo Buffers 2973696 bytes

Database mounted.

Database opened.

SQL> show parameter log_archive_dest

NAME TYPE VALUE

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

log_archive_dest string /home/oracle/

log_archive_dest_1 string

log_archive_dest_10 string

log_archive_dest_2 string

log_archive_dest_3 string

log_archive_dest_4 string

log_archive_dest_5 string

log_archive_dest_6 string

log_archive_dest_7 string

log_archive_dest_8 string

log_archive_dest_9 string

log_archive_dest_state_1 string enable

log_archive_dest_state_10 string enable

log_archive_dest_state_2 string enable

log_archive_dest_state_3 string enable

log_archive_dest_state_4 string enable

log_archive_dest_state_5 string enable

log_archive_dest_state_6 string enable

log_archive_dest_state_7 string enable

log_archive_dest_state_8 string enable

log_archive_dest_state_9 string enable

SQL> alter system set log_archive_dest_1='location=/home/oracle/'; ------不可动态改动

alter system set log_archive_dest_1='location=/home/oracle/'

*

ERROR at line 1:

ORA-02097: parameter cannot be modified because specified value is invalid

ORA-16019: cannot use LOG_ARCHIVE_DEST_1 with LOG_ARCHIVE_DEST or

LOG_ARCHIVE_DUPLEX_DEST

SQL> alter system set log_archive_dest=''; ------不可动态改动

alter system set log_archive_dest=''

*

ERROR at line 1:

ORA-02097: parameter cannot be modified because specified value is invalid

ORA-16018: cannot use LOG_ARCHIVE_DEST with LOG_ARCHIVE_DEST_n or

DB_RECOVERY_FILE_DEST