ORA-19500: device block size string is invalid
Cause: the device block size returned by sequential I/O OSD is invalid
Action: If the block size was set by using the PARMS option of the Recovery Manager ALLOCATE CHANNEL command, then the specified block size must be changed. If no PARMS option was specified on the ALLOCATE CHANNEL command, then this is an internal error that should be reported to Oracle.
ORA-19500: device block size string is invalid
该错误表明,在用户传入的块大小参数中,光盘的块大小字符串无效。
1. 将ORA-19500错误中给出的物理块大小提取出来,将其与磁盘中实际文件存储的块大小进行比较。
2. 如果涉及到对数据文件进行修正,则可以使用DBMS_REPAIR包或其他根据Oracle错误消息中提供的附加参数启用恢复。
3. 使用DBMS_REPAIR的DBMS_REPAIR.ONLINE_INDEX_REBUILD函数重建索引,以使恢复更有效率。
4. 向技术支持专家寻求帮助,以便正确定位和恢复磁盘上存在的块大小信息。