ORA-00825: cannot set DB_BLOCK_BUFFERS if SGA_TARGET or MEMORY_TARGET is set ORACLE 报错 故障修复 远程处理

文档解释

ORA-00825: cannot set DB_BLOCK_BUFFERS if SGA_TARGET or MEMORY_TARGET is set

Cause: SGA_TARGET or MEMORY_TARGET set with DB_BLOCK_BUFFERS set.

Action: Do not set SGA_TARGET, MEMORY_TARGET or use new cache parameters, and do not use DB_BLOCK_BUFFERS which is an old cache parameter.

ORA-00825: cannot set DB_BLOCK_BUFFERS if SGA_TARGET or MEMORY_TARGET is set

该错误表明你尝试在已经使用SGA_TARGET或MEMORY_TARGET参数设置了SGA_SIZE时,设置DB_BLOCK_BUFFERS,这样会造成冲突,故而出现ORA-00825错误。

官方解释

当SGA_TARGET或MEMORY_TARGET被设置时,不允许设置DB_BLOCK_BUFFERS参数。SGA_TARGET和MEMORY_TARGET参数用于准确控制SGA大小。它们可以替代DB_BLOCK_BUFFERS参数,因此DB_BLOCK_BUFFERS不需要被设置。

常见案例

1. 在创建数据库时,仅设置SGA_TARGET或MEMORY_TARGET,但未设置DB_BLOCK_BUFFERS;

2. 在有SGA_TARGET或MEMORY_TARGET的情况下,尝试修改DB_BLOCK_BUFFERS。

正常处理方法及步骤

1. 修改init参数文件,删除DB_BLOCK_BUFFERS相关参数;

2. 重新起动数据库,使参数生效;

3. 使用SHOW PARAMETERS检查参数设置,确保DB_BLOCK_BUFFERS参数被删除;

4. 根据需要,可以重新调整SGA_TARGET或MEMORY_TARGET的大小,使数据库工作的更稳定。


数据运维技术 » ORA-00825: cannot set DB_BLOCK_BUFFERS if SGA_TARGET or MEMORY_TARGET is set ORACLE 报错 故障修复 远程处理