ORA-38500 USING CURRENT LOGFILE option not available withou

author:skate
time :2009/08/03

在dataguard启用实时恢复的时候，报如下错误：

ORA-38500: USING CURRENT LOGFILE option not available without stand

实际操作：

SQL> alter database recover managed standby database using current logfile disconnect from session;
alter database recover managed standby database using current logfile disconnect from session
*
第 1 行出现错误:
ORA-38500: USING CURRENT LOGFILE option not available without stand

这个错误说明，在standby库没有standby logfile，在maxmize pretection，maxmize availability中必须
要有standby logfile，为了避免数据的损失最少，maxmize performance 也最好创建standby logfile，考虑角色切换
primary库也要创建standby logfile，

standby logfile创建的要求，与primary的redo logfile的大小相同，个数要至少多一个

SQL> shutdown immeidate;
SP2-0717: 非法的 SHUTDOWN 选项
SQL> shutdown immediate;
ORA-01109: 数据库未打开

已经卸载数据库。
ORACLE 例程已经关闭。
SQL> startup mount;
ORACLE 例程已经启动。

Total System Global Area 612368384 bytes
Fixed Size                  1250428 bytes
Variable Size             167775108 bytes
Database Buffers          436207616 bytes
Redo Buffers                7135232 bytes
数据库装载完毕。

SQL> select member from v$logfile;

MEMBER
--------------------------------------------------------------------------------
D:/ORACLE/PRODUCT/10.2.0/ORADATA/ORCLDG1/REDO03.LOG
D:/ORACLE/PRODUCT/10.2.0/ORADATA/ORCLDG1/REDO02.LOG
D:/ORACLE/PRODUCT/10.2.0/ORADATA/ORCLDG1/REDO01.LOG

SQL> alter database add standby logfile group 4 'D:/ORACLE/PRODUCT/10.2.0/ORADATA/ORCLDG1/stdREDO01.LOG' size 50m;

数据库已更改。

SQL> alter database add standby logfile group 5 'D:/ORACLE/PRODUCT/10.2.0/ORADATA/ORCLDG1/stdREDO02.LOG' size 50m;

数据库已更改。

SQL> alter database add standby logfile group 6 'D:/ORACLE/PRODUCT/10.2.0/ORADATA/ORCLDG1/stdREDO03.LOG' size 50m;

数据库已更改。

SQL> alter database add standby logfile group 7 'D:/ORACLE/PRODUCT/10.2.0/ORADATA/ORCLDG1/stdREDO04.LOG' size 50m;

数据库已更改。

现在，再启用实时应用，就ok了！！！

SQL> alter database recover managed standby database using current logfile disconnect from session;

数据库已更改。

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