我们正在 Oracle 系统（RHEL 5.9、2.6.18-348.6.1.el5）上运行数据库转储的导入。导入未完成，最终出错：
ORA-15080: synchronous I/O operation to a disk failed
WARNING: failed to write mirror side 1 of virtual extent 248 logical extent 0 of file 280 in group 1 on disk 1 allocation unit 986
Errors in file /u01/app/oracle/diag/rdbms/dbprod/DBPROD/trace/DBPROD_lgwr_24520.trc:
ORA-00345: redo log write error block 509314 count 2023
ORA-00312: online log 1 thread 1: '+DATA/dbprod/redo01.log'
ORA-15081: failed to submit an I/O operation to a disk
ORA-15081: failed to submit an I/O operation to a disk
环形缓冲区中存在相应的错误，并且/var/log/messages …