我正在编写一个必须从输入文件中读取然后读取输出的代码。其中一个文件很大，大约为------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost | Time |
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| 0 | SELECT STATEMENT | | 1 | 54 | 128114 | |
| 1 | SORT AGGREGATE | | 1 | 54 | | |
| 2 | FILTER | | | | | |
| 3 | HASH JOIN | | 12779902 | 690114708 | 113296 | |
| 4 | TABLE ACCESS FULL | ACCT | 47574 | 523314 | 418 | |
| 5 | HASH JOIN | | 12778893 | 549492399 | 112713 | |
| 6 | MERGE JOIN CARTESIAN | | 30418 | 304180 | 31 | |
| 7 | INDEX FULL SCAN | PK_ACTVCAT | 67 | 335 | 1 | |
| 8 | BUFFER SORT | | 454 | 2270 | 30 | |
| 9 | INDEX FAST FULL SCAN | PK_ACTVTYP | 454 | 2270 | 0 | |
| 10 | TABLE ACCESS FULL | ACTV | 12778893 | 421703469 | 112517 | |
| 11 | COUNT STOPKEY | | | | | |
| 12 | INLIST ITERATOR | | | | | |
| 13 | INDEX UNIQUE SCAN | PK_AMSACTVGRPEMPL | 1 | 15 | 2 | |
| 14 | COUNT STOPKEY | | | | | |
| 15 | INDEX RANGE SCAN | ACTVSUBACTV_DX2 | 2 | 12 | 4 | |
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。我不太擅长编程，因此通过阅读一些教程和38 MB编程指南，我编写了以下代码，以从两个文件读取，将其写入逻辑，然后进行读取。我的动机是计算未来项目的读写时间。但是当我尝试运行程序时，出现以下错误
xillybux我不知道我做错了什么。我写的代码如下
Failed to open Xillybus device file(s), device resource busy