前提：归档开启，默认不指定归档目录。 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参数，巨坑。。实验了下，结论如下： 数据库版本:ORACLE10.2.0.1 1.未设置闪回区时，可以动态配置log_archive_dest或log_ar
前提：归档开启，默认不指定归档目录。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参数，巨坑。。实验了下，结论如下：
数据库版本:ORACLE10.2.0.1
1.未设置闪回区时，可以动态配置log_archive_dest或log_archive_dest_1
2.配置闪回区时，不可以动态配置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，可以动态配置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，不可以动态配置log_archive_dest
SQL> show parameter log_archiveNAME 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/'; ----不可动态修改
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/'; -----可动态修改
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> startupORACLE 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/'; ------不可动态修改
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=''; ------不可动态修改
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
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