在SAP　FTP上下载GUI710的PATCH，发现有一个PDB的文件，查了一下用途：

The SAP Service Marketplace contains, in addition to the actual Support Package file for the SAP GUI (for example, GUI610.EXE), another file with a "pdb" extension (for example, 610_PDB.EXE).
The PDB file is ONLY required when requested by SAP Support (it contains important debugging information for SAP GUI "crashes"). The OSS message issued with each problem contains more information on how to handle the PDB file.