ORA-15092: I/O request size string is not a multiple of logical block size string
Cause: The length of the request was not a multiple of logical block size.
Action: Correct the error and retry the operation.
ORA-15092: I/O request size string is not a multiple of logical block size string是由于I/O请求的大小（由一个名为string的字符串表示）不是逻辑块大小的整数倍导致的，这是一种OCFS2的错误，本身是Linux上常见的一种文件系统，一般用于ASM存储文件系统中。