ORA-02096: specified initialization parameter is not modifiable with this option
2012-07-24 10:11
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今天读Oracle文档的时候看到Oracle可以用I/O slaves异步IO及时设备不支持异步IO。调整参数为:BACKUP_TAPE_IO_SLAVES=true
BACKUP_TAPE_IO_SLAVES指定了恢复管理器(Recovery Manager)所使用的从属进程的数目,这些从属进程被用来备份,拷贝或恢复数据到磁带上。当此参数为TRUE时,一个I/O从属进程被用来从磁带设备读取或写入数据。如果此参数为FALSE(默认情况下),在备份中不会使用I/O从属进程,而是由备份的阴影进程(shadow process)来存取磁带设备。
但是更改参数的时候无法成功提示错误:ORA-02096: specified initialization parameter is not modifiable with this option
查看Oracle的文档发现 需要用 ALTER SYSTEM ... DEFERRED
用alter system set backup_tape_io_slaves = false deferred;说明修改只对本次会话之后的程序发生作用。
BACKUP_TAPE_IO_SLAVES指定了恢复管理器(Recovery Manager)所使用的从属进程的数目,这些从属进程被用来备份,拷贝或恢复数据到磁带上。当此参数为TRUE时,一个I/O从属进程被用来从磁带设备读取或写入数据。如果此参数为FALSE(默认情况下),在备份中不会使用I/O从属进程,而是由备份的阴影进程(shadow process)来存取磁带设备。
但是更改参数的时候无法成功提示错误:ORA-02096: specified initialization parameter is not modifiable with this option
查看Oracle的文档发现 需要用 ALTER SYSTEM ... DEFERRED
BACKUP_TAPE_IO_SLAVES
Property | Description |
---|---|
Parameter type | Boolean |
Default value | false |
Modifiable | ALTER SYSTEM ... DEFERRED |
Range of values | true | false |
Basic | No |
用alter system set backup_tape_io_slaves = false deferred;说明修改只对本次会话之后的程序发生作用。
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