ORA-00845: MEMORY_TARGET not supported on this system的解决方法

发霉的馒头2026-09-01 10:21

bash 复制代码

[oracle@ /root]$ sqlplus / as sysdba

SQL*Plus: Release 19.0.0.0.0 - Production on 水 7月 27 08:52:11 2022
Version 19.3.0.0.0

Copyright (c) 1982, 2019, Oracle.  All rights reserved.

SQL> startup
ORA-00845: MEMORY_TARGET not supported on this system

找到错误原因是MEMORY_MAX_TARGET 的设置不能超过 /dev/shm 的大小

bash 复制代码

[oracle@ /root]$ df -h
devtmpfs                1.1G     0  1.1G    0% /dev
tmpfs                   1.2G  544M  590M   48% /dev/shm
tmpfs                   1.2G  9.5M  1.1G    1% /run
tmpfs                   1.2G     0  1.2G    0% /sys/fs/cgroup
/dev/mapper/rhel-root    50G   29G   22G   58% /
/dev/mapper/rhel-home    27G  1.2G   26G    5% /home
/dev/sda1              1014M  183M  832M   19% /boot
tmpfs                   227M   32K  227M    1% /run/user/54321
/dev/sr0                 83M   83M     0  100% /run/media/oracle/VBox_GAs_6.0.8
tmpfs                   227M     0  227M    0% /run/user/0

切换到root用户，使用命令增加内存

mount -o remount,size=2G /dev/shm/

bash 复制代码

[oracle@ /root]$ su root
密码:
[root@CSILO-GR ~]# mount -o remount,size=2G /dev/shm/
[root@CSILO-GR ~]# df -h | grep shm
tmpfs                   2.0G  544M  1.5G   27% /dev/shm
[root@CSILO-GR ~]# su oracle
[oracle@CSILO-GR /root]$ sqlplus / as sysdba

SQL*Plus: Release 19.0.0.0.0 - Production on 水 7月 27 10:43:48 2022
Version 19.3.0.0.0

Copyright (c) 1982, 2019, Oracle.  All rights reserved.

连接成功

SQL> startup
ORACLE instance启动成功

Total System Global Area  952105680 bytes
Fixed Size                  8903376 bytes
Variable Size             629145600 bytes
Database Buffers          310378496 bytes
Redo Buffers                3678208 bytes