DM7配置本地归档

配置本地归档
归档配置有两种方式：一是联机归档配置，数据库服务器启动情况下，使用SQL语句完成dmarch.ini和ARCH_INI配置；二是手动配置归档，数据库服务器未启动的情况下，手动编写dmarch.ini文件和设置参数ARCH_INI。下面将分别说明这两种归档如何配置。

联机配置归档
使用SQL语句配置本地归档。语法如下：
ALTER DATABASE ARCHIVELOG <归档配置语句>;
<归档配置语句>::= 'DEST = <归档目标>,TYPE = <归档类型>'
<归档类型>::=|
::=LOCAL [,FILE_SIZE = <文件大小>][,SPACE_LIMIT = <空间大小限制>]
::=REMOTE [,FILE_SIZE = <文件大小>][,SPACE_LIMIT = <空间大小限制>],INCOMING_PATH = <归档存放路径>

使用SQL语句开启和关闭归档模式。
语法如下:

ALTER DATABASE ARCHIVELOG | NOARCHIVELOG;

在归档模式下，不允许删除本地归档。
例如，RAC环境联机归档配置如下：
1)修改数据库为MOUNT状态。
节点1:

SQL> alter database mount;executed successfullyused time: 00:00:01.852. Execute id is 0.

节点2:

SQL> alter database mount;executed successfullyused time: 00:00:01.853. Execute id is 0.

2)配置本地归档。
节点1:

SQL> alter database add archivelog 'dest=/dm7/data/local_arch,type=local,file_size=256,space_limit=0';executed successfullyused time: 3.110(ms). Execute id is 0.

节点2:

SQL> alter database add archivelog 'dest=/dm7/data/local_arch,type=local,file_size=256,space_limit=0';executed successfullyused time: 3.171(ms). Execute id is 0.

3)开启归档模式。
节点1:

SQL> alter database archivelog;executed successfullyused time: 11.986(ms). Execute id is 0.

节点2:

SQL> alter database archivelog;executed successfullyused time: 11.780(ms). Execute id is 0.

4)修改数据库为OPEN状态。
节点1:

SQL> alter database open;executed successfullyused time: 00:00:01.466. Execute id is 0.

节点2:

SQL> alter database open;executed successfullyused time: 711.999(ms). Execute id is 0.

5)查看归档配置文件dmarch.ini
节点1:

[dmdba@dmrac1 rac0_config]$ pwd/dm7/data/rac0_config[dmdba@dmrac1 rac0_config]$ cat dmarch.ini#DaMeng Database Archive Configuration file#this is comments        ARCH_WAIT_APPLY                 = 1    --性能模式，是否等待重演完成，取值0：高性能模式， 1：数据一致模式。本地归档取值NULL[ARCHIVE_LOCAL1]        ARCH_TYPE                       = LOCAL        ARCH_DEST                       = /dm7/data/local_arch        ARCH_FILE_SIZE                  = 256        ARCH_SPACE_LIMIT                = 0

节点2:

[dmdba@dmrac2 rac1_config]$ pwd/dm7/data/rac1_config[dmdba@dmrac2 rac1_config]$ cat dmarch.ini#DaMeng Database Archive Configuration file#this is comments        ARCH_WAIT_APPLY                 = 1       --性能模式，是否等待重演完成，取值0：高性能模式， 1：数据一致模式。本地归档取值NULL[ARCHIVE_LOCAL1]        ARCH_TYPE                       = LOCAL        ARCH_DEST                       = /dm7/data/local_arch        ARCH_FILE_SIZE                  = 256        ARCH_SPACE_LIMIT                = 0

6)检查ARCH_INI参数是否为1
节点1:

SQL> select * from v$dm_ini where para_name='ARCH_INI';LINEID     PARA_NAME PARA_VALUE MIN_VALUE MAX_VALUE MPP_CHK SESS_VALUE FILE_VALUE DESCRIPTION PARA_TYPE---------- --------- ---------- --------- --------- ------- ---------- ---------- ----------- ---------1          ARCH_INI  1          0         1         N       1          1          dmarch.ini  SYSused time: 30.251(ms). Execute id is 5.

节点2:

SQL> select * from v$dm_ini where para_name='ARCH_INI';LINEID     PARA_NAME PARA_VALUE MIN_VALUE MAX_VALUE MPP_CHK SESS_VALUE FILE_VALUE DESCRIPTION PARA_TYPE---------- --------- ---------- --------- --------- ------- ---------- ---------- ----------- ---------1          ARCH_INI  1          0         1         N       1          1          dmarch.ini  SYSused time: 29.498(ms). Execute id is 13.

禁用归档
1修改数据库为MOUNT状态。
节点1:

SQL> alter database mount;executed successfullyused time: 00:00:01.858. Execute id is 0.

节点2:

SQL> alter database mount;executed successfullyused time: 00:00:01.858. Execute id is 0.

2.禁用归档
节点1：

SQL> alter database noarchivelog;executed successfullyused time: 42.916(ms). Execute id is 0.

节点2：

SQL> alter database noarchivelog;executed successfullyused time: 42.533(ms). Execute id is 0.

3.删除配置的本地归档设置
节点1：

SQL> alter database delete archivelog 'dest=/dm7/data/local_arch,type=local,file_size=256,space_limit=0';executed successfullyused time: 0.931(ms). Execute id is 0.

节点2：

SQL> alter database delete archivelog 'dest=/dm7/data/local_arch,type=local,file_size=256,space_limit=0';executed successfullyused time: 0.952(ms). Execute id is 0.

4.删除之前生成的归档日志文件(可选项)
节点1:

SQL> sf_archivelog_delete_before_time(sysdate+1);DMSQL executed successfullyused time: 2.907(ms). Execute id is 7.

节点2：

SQL> sf_archivelog_delete_before_time(sysdate+1);DMSQL executed successfullyused time: 3.542(ms). Execute id is 16.

5.打开数据库
节点1:

SQL> alter database open;executed successfullyused time: 00:00:01.609. Execute id is 0.

节点2:

SQL> alter database open;executed successfullyused time: 00:00:02.304. Execute id is 0.

6.检查归档配置文件dmarch.ini的内容是否已经被删除
节点1：

[dmdba@dmrac1 rac0_config]$ cat dmarch.ini#DaMeng Database Archive Configuration file#this is comments        ARCH_WAIT_APPLY      = 1        --性能模式，是否等待重演完成，取值0：高性能模式， 1：数据一致模式。本地归档取值NULL

节点2：

[dmdba@dmrac2 rac1_config]$ cat dmarch.ini#DaMeng Database Archive Configuration file#this is comments        ARCH_WAIT_APPLY      = 1        --性能模式，是否等待重演完成，取值0：高性能模式， 1：数据一致模式。本地归档取值NULL

7.检查ARCH_INI参数是否为0
节点1：

SQL> select * from v$dm_ini where para_name='ARCH_INI';LINEID     PARA_NAME PARA_VALUE MIN_VALUE MAX_VALUE MPP_CHK SESS_VALUE FILE_VALUE DESCRIPTION PARA_TYPE---------- --------- ---------- --------- --------- ------- ---------- ---------- ----------- ---------1          ARCH_INI  0          0         1         N       0          0          dmarch.ini  SYSused time: 7.086(ms). Execute id is 8.

节点2：

SQL> select * from v$dm_ini where para_name='ARCH_INI';LINEID     PARA_NAME PARA_VALUE MIN_VALUE MAX_VALUE MPP_CHK SESS_VALUE FILE_VALUE DESCRIPTION PARA_TYPE---------- --------- ---------- --------- --------- ------- ---------- ---------- ----------- ---------1          ARCH_INI  0          0         1         N       0          0          dmarch.ini  SYSused time: 14.366(ms). Execute id is 18.

手动配置归档示例如下:
1)手动编辑dmarch.ini文件，之后保存在dm.ini所在的目录。dmarch.ini文件内容如下：

[ARCHIVE_LOCAL1]ARCH_TYPE = LOCALARCH_DEST = /dm7/data/local_archARCH_FILE_SIZE = 256ARCH_SPACE_LIMIT = 0

2)编辑dm.ini文件，设置参数ARCH_INI=1，保存。
3)启动服务器，服务器已运行于归档模式。

多路归档，指配置多个本地归档。配置的第一个归档，称为第一路归档，后面依次是第二路、第三路......