各位大侠，本人在使用readtrace工具的时候出现以下错误:

我用的命令：readtrace -f -I"e:\mytrace" -O"e:\output"

05/06/09 17:57:38.187 [0X00000740] Readtrace a SQL Server trace processing utility.
Version 9.01.0109 built for x86.
Copyright (c) Microsoft Corporation 1997-2008. All rights reserved.
05/06/09 17:57:38.187 [0X00000740] Number of processors: 2
05/06/09 17:57:38.203 [0X00000740]     Active proc mask: 0x00000003
05/06/09 17:57:38.218 [0X00000740]         Architecture: 0
05/06/09 17:57:38.218 [0X00000740]            Page size: 4096
05/06/09 17:57:38.218 [0X00000740]         Highest node: 0
05/06/09 17:57:38.218 [0X00000740] -f
05/06/09 17:57:38.218 [0X00000740] -IE:\mytrace
05/06/09 17:57:38.218 [0X00000740] -Oe:\output
05/06/09 17:57:38.218 [0X00000740] Using language id (LCID): 1024 [Chinese_People's Republic of China.936] for character formatting
05/06/09 17:57:38.218 [0X00000740] Attempting to cleanup existing RML files from previous execution
05/06/09 17:57:38.218 [0X00000740] Using extended RowsetFastload synchronization
05/06/09 17:57:38.218 [0X00000740] Establishing initial database connection:
05/06/09 17:57:38.218 [0X00000740] Server: (local)
05/06/09 17:57:38.218 [0X00000740] Database: PerfAnalysis
05/06/09 17:57:38.218 [0X00000740] Authentication: Windows
05/06/09 17:57:38.218 [0X00000740] Unable to connect to the specified server.
05/06/09 17:57:38.218 [0X00000740] ERROR: Performance analysis failed to initialize.  See previous errors and correct the problem before retrying.
05/06/09 17:57:38.218 [0X00000740] *******************************************************************************
* ReadTrace encountered one or more ERRORS. An error condition typically      *
* stops processing early and the ReadTrace output may be unusable.            *
* Review the log file for details.                                            *
*******************************************************************************
05/06/09 17:57:38.218 [0X00000740] ***** ReadTrace exit code: -9

对于Unable to connect to the specified server. 我检查了好多次，正在运行的数据库就是本机的数据库，试了好多次，都没有解决问题，不知道问题到底出现在哪？ 有没有高人指点一下，不胜感激啊！