# Description of system files' FDT

**URL:** <https://techcommunity.softwareag.com/t/description-of-system-files-fdt/303421>\
**Category:** Forum\
**Tags:** Adabas-Natural, Adabas, Natural, Adabas-on-Mainframes, Natural-on-Mainframes\
**Created:** [November 27, 2024, 10:38am UTC](https://techcommunity.softwareag.com/t/description-of-system-files-fdt/303421 "2024-11-27T10:38:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Evgen](https://avatars.discourse-cdn.com/v4/letter/e/85f322/32.png) [@Evgen](https://techcommunity.softwareag.com/u/Evgen)\
**Post date:** [November 27, 2024, 10:38am UTC](https://techcommunity.softwareag.com/t/description-of-system-files-fdt/303421/1 "2024-11-27T10:38:00Z")

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subj  
Ok, I understand that reading a system file directly is not the best idea.  
Is it possible to find out when a program (module) was last executed (loaded into the buffer pool), who and when edited the source code, etc.?

#### _ **Product/components** used and **version/fix** level:_

NAT228  
NAT316

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**Author:** ![Ralph\_Zbrog](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/ralph_zbrog/32/78_2.png) [@Ralph\_Zbrog](https://techcommunity.softwareag.com/u/Ralph_Zbrog)\
**Post date:** [November 27, 2024, 11:02am UTC](https://techcommunity.softwareag.com/t/description-of-system-files-fdt/303421/2 "2024-11-27T11:02:27Z")

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Natural doesn’t provide any historical data on an object’s use. There is nothing in the system files that would help you. You would have to create your own system to periodically extract data from the Buffer Pool and save it in your own database file.

You can see who last updated a source module with the LIST and L DIR commands (Presuming those commands in Nat228 worked as they do now.)

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**Author:** ![system](https://global.discourse-cdn.com/techcommunity/original/3X/c/d/cd19967bb605d28a72d77eb83a1cae22f3df2eb8.svg) [@system](https://techcommunity.softwareag.com/u/system)\
**Post date:** [May 26, 2025, 11:03am UTC](https://techcommunity.softwareag.com/t/description-of-system-files-fdt/303421/3 "2025-05-26T11:03:06Z")

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