QDLS?

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I attended an iSeries users group meeting recently and one of the participants advised against using QDLS. I don't recall the specific issue but it had something to do with QDLS not being thread-safe. It may have been a security issue. Can anyone elaborate on this issue? Our shop doesn't use QDLS but we are evaluating software packages and want to make sure the product we select doesn't have functions that exclusively use the QDLS directory. It would be helpful to know exactly what the issue is. Thanks!
ASKED: March 22, 2005  11:11 AM
UPDATED: March 23, 2005  4:31 AM

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QDLS is a relic from the past. It was IBM’s first attempt to encorporate a PC- or Unix-like directory system in OS/400. These days OS/400 has the IFS (Integrated File System), which does it the other way round: it encorporates the original library system in a Unix-like directory system.

QDLS has several disadvantages (compared to a directory in the root file system):
- To use it a user has to be enrolled in the system directory
- File names are limited to 8.3 (FILENAME.EXT)
- It has more overhead and thus is slower

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