ORA-27005: cannot open file for async I/O on device not supporting async
Cause: internal error, a file is being opened for async I/O on a device that does not support async I/O, additional information indicates which function encountered error
Action: check for trace file and contact Oracle Support
ORA-27005:无法在不支持异步I/O的设备上打开文件进行异步I/O
1.确认是否是由于磁盘不支持异步I/O 导致的错误,可以借助AWR 报告中的“I/O Request per Second (IORPS)”。
2.如果发现IORPS过低,则需要查看硬件供应商支持的文档,来确认Oracle所支持的块大小(block size)及异步I/O支持情况。
3.根据硬件情况,如果存储空间支持异步I/O,应检查实例配置及操作系统配置,确认已正确配置支持异步I/O的组件,以便支持异步I/O。