ORA-00845: MEMORY_TARGET not supported on this system
2018-01-30 17:46
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原文地址:https://www.cnblogs.com/killkill/archive/2010/09/10/1823690.html
今天晚上新装一台Oracle 11g的数据库,打算将SGA设大一点,知道 11g 中有一个新特新 MEMORY_TARGET,于是尝一下鲜,谁知报了个 ORA-00845,报错比较容易迷惑人,不借助Google真得想半天:
来自Oracle的官方解析是:
Starting with Oracle Database 11g, the Automatic Memory Management feature requires more shared memory (/dev/shm)and file descriptors. The size of the shared memory should be at least the greater of MEMORY_MAX_TARGET
and MEMORY_TARGET for each Oracle instance on the computer. If MEMORY_MAX_TARGET or MEMORY_TARGET is set to a non zero value, and an incorrect size is assigned to the shared memory, it will result in an ORA-00845 error at startup.
简单来说就是 MEMORY_MAX_TARGET 的设置不能超过 /dev/shm 的大小:
还真是撞到这个枪口上了:
马上把它加大:
现在可以通过重启使这个配置生效,也可以通过重新挂载来修改其大小:
再次启动数据库,没有报错了。
今天晚上新装一台Oracle 11g的数据库,打算将SGA设大一点,知道 11g 中有一个新特新 MEMORY_TARGET,于是尝一下鲜,谁知报了个 ORA-00845,报错比较容易迷惑人,不借助Google真得想半天:
Starting with Oracle Database 11g, the Automatic Memory Management feature requires more shared memory (/dev/shm)and file descriptors. The size of the shared memory should be at least the greater of MEMORY_MAX_TARGET
and MEMORY_TARGET for each Oracle instance on the computer. If MEMORY_MAX_TARGET or MEMORY_TARGET is set to a non zero value, and an incorrect size is assigned to the shared memory, it will result in an ORA-00845 error at startup.
简单来说就是 MEMORY_MAX_TARGET 的设置不能超过 /dev/shm 的大小:
马上把它加大:
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