oracle修改db_writer_processes

原创于 2021-03-29 11:49:20 发布 · 658 阅读

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这篇博客记录了如何在Oracle数据库中查看并修改db_writer_processes参数。首先展示初始值为1，然后通过ALTER SYSTEM命令设置为2，并在下次启动时生效。接着进行数据库的关闭、卸载和重启操作，最后验证参数已更改为2。

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SQL> show parameter db_writer_processes;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_writer_processes                  integer     1
SQL> alter system set db_writer_processes=2 scope=spfile;

System altered.

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

SQL> startup
ORACLE instance started.

Total System Global Area 9787547648 bytes
Fixed Size                  2261568 bytes
Variable Size            5402267072 bytes
Database Buffers         4362076160 bytes
Redo Buffers               20942848 bytes
Database mounted.
Database opened.
SQL> show parameter db_writer_processes;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_writer_processes                  integer     2
SQL>