oracle 11g修改归档日志目录及大小

SQL> show parameter recovery

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest                string      /u01/app/oracle/fast_recovery_
                                                 area
db_recovery_file_dest_size           big integer 4182M
recovery_parallelism                 integer     0

SQL> alter system set db_recovery_file_dest=‘/u01/app/oracle/archivelog‘ scope=spfile;

System altered.

SQL> alter system set db_recovery_file_dest_size=4096m scope=spfile;

System altered.

SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.

Total System Global Area  759943168 bytes
Fixed Size                  2257112 bytes
Variable Size             499126056 bytes
Database Buffers          255852544 bytes
Redo Buffers                2707456 bytes
Database mounted.
Database opened.
SQL> show parameter recovery

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest                string      /u01/app/oracle/archivelog
db_recovery_file_dest_size           big integer 4G
recovery_parallelism                 integer     0