SAP GUI PDB檔案的作用

which files you mean ?
if you say for Patch 14, as per my knowledge pdb files are only for debugging purposes.

from what SAP Note 503115 says

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.

you do not need to install them, either you can copy them into SAP GUI directory.

link:

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