我刚刚针对数据库运行checkdb，并且它报告了以下错误。
这些错误的严重性是什么？是尝试找到未损坏的备份的唯一选择吗？到目前为止，CheckDB从未针对数据库运行过。
实例的版本为Microsoft SQL Server 2008 R2（SP1）-10.50.2550.0（X64）。
--Table 1
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:843588) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:843588). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8976, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:843588) was not seen in the scan although its parent (1:836676) and previous (1:843587) refer to it. Check any previous errors.
Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:843589) is missing a reference from previous page (1:843588). Possible chain linkage problem.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:843604) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:843604). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8976, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:843604) was not seen in the scan although its parent (1:836676) and previous (1:843603) refer to it. Check any previous errors.
Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:843605) is missing a reference from previous page (1:843604). Possible chain linkage problem.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:843612) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:843612). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8976, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:843612) was not seen in the scan although its parent (1:836676) and previous (1:843611) refer to it. Check any previous errors.
Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:843613) is missing a reference from previous page (1:843612). Possible chain linkage problem.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:843620) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:843620). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8976, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:843620) was not seen in the scan although its parent (1:836676) and previous (1:843619) refer to it. Check any previous errors.
Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:843621) is missing a reference from previous page (1:843620). Possible chain linkage problem.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:844022) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:844022). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8976, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:844022) was not seen in the scan although its parent (1:836678) and previous (1:844021) refer to it. Check any previous errors.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:844023) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:844023). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8980, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Index node page (1:836678), slot 6 refers to child page (1:844023) and previous child (1:844022), but they were not encountered.
Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:844024) is missing a reference from previous page (1:844023). Possible chain linkage problem.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:844046) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:844046). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8976, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:844046) was not seen in the scan although its parent (1:836678) and previous (1:844045) refer to it. Check any previous errors.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:844047) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:844047). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8980, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Index node page (1:836678), slot 30 refers to child page (1:844047) and previous child (1:844046), but they were not encountered.
Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:844048) is missing a reference from previous page (1:844047). Possible chain linkage problem.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:844054) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:844054). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8976, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:844054) was not seen in the scan although its parent (1:836678) and previous (1:844053) refer to it. Check any previous errors.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:844055) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:844055). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8980, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Index node page (1:836678), slot 38 refers to child page (1:844055) and previous child (1:844054), but they were not encountered.
Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:844056) is missing a reference from previous page (1:844055). Possible chain linkage problem.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:850623) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:850623). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8976, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:850623) was not seen in the scan although its parent (1:737969) and previous (1:850622) refer to it. Check any previous errors.
Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:850624) is missing a reference from previous page (1:850623). Possible chain linkage problem.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:850639) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:850639). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8976, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:850639) was not seen in the scan although its parent (1:737969) and previous (1:850638) refer to it. Check any previous errors.
Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:850640) is missing a reference from previous page (1:850639). Possible chain linkage problem.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:850655) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:850655). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8976, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:850655) was not seen in the scan although its parent (1:737969) and previous (1:850654) refer to it. Check any previous errors.
Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:850656) is missing a reference from previous page (1:850655). Possible chain linkage problem.
Msg 8928, Level 16, State 1, Line 1
Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data): Page (1:851862) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data), page (1:851862). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8976, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:851862) was not seen in the scan although its parent (1:737974) and previous (1:851861) refer to it. Check any previous errors.
Msg 8978, Level 16, State 1, Line 1
Table error: Object ID 1346923970, index ID 1, partition ID 72057594928496640, alloc unit ID 72057595059634176 (type In-row data). Page (1:851863) is missing a reference from previous page (1:851862). Possible chain linkage problem.
--Table 2
Msg 8928, Level 16, State 1, Line 1
Object ID 229575856, index ID 1, partition ID 72057595678294016, alloc unit ID 72057594044350464 (type LOB data): Page (1:851886) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 229575856, index ID 1, partition ID 72057595678294016, alloc unit ID 72057594044350464 (type LOB data), page (1:851886). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8965, Level 16, State 1, Line 1
Table error: Object ID 229575856, index ID 1, partition ID 72057595678294016, alloc unit ID 72057594044350464 (type LOB data). The off-row data node at page (1:851886), slot 0, text ID 389021696 is referenced by page (1:857085), slot 0, but was not seen in the scan.
Msg 8928, Level 16, State 1, Line 1
Object ID 229575856, index ID 1, partition ID 72057595678294016, alloc unit ID 72057594044350464 (type LOB data): Page (1:851894) could not be processed. See other errors for details.
Msg 8939, Level 16, State 98, Line 1
Table error: Object ID 229575856, index ID 1, partition ID 72057595678294016, alloc unit ID 72057594044350464 (type LOB data), page (1:851894). Test (IS_OFF (BUF_IOERR, pBUF->bstat)) failed. Values are 12716041 and -4.
Msg 8965, Level 16, State 1, Line 1
Table error: Object ID 229575856, index ID 1, partition ID 72057595678294016, alloc unit ID 72057594044350464 (type LOB data). The off-row data node at page (1:851894), slot 0, text ID 389021696 is referenced by page (1:857085), slot 0, but was not seen in the scan.
Msg 8929, Level 16, State 1, Line 1
Object ID 229575856, index ID 1, partition ID 72057595678294016, alloc unit ID 72057596038545408 (type In-row data): Errors found in off-row data with ID 389021696 owned by data record identified by RID = (1:2890944:2)
Msg 8929, Level 16, State 1, Line 1
Object ID 229575856, index ID 1, partition ID 72057595678294016, alloc unit ID 72057596038545408 (type In-row data): Errors found in off-row data with ID 389021696 owned by data record identified by RID = (1:2894013:1)
Msg 8929, Level 16, State 1, Line 1
Object ID 229575856, index ID 1, partition ID 72057595678294016, alloc unit ID 72057596038545408 (type In-row data): Errors found in off-row data with ID 389021696 owned by data record identified by RID = (1:2897787:1)
Msg 8929, Level 16, State 1, Line 1
Object ID 229575856, index ID 1, partition ID 72057595678294016, alloc unit ID 72057596038545408 (type In-row data): Errors found in off-row data with ID 389021696 owned by data record identified by RID = (1:2902387:2)