mnesia debug

shijiang1130

1. 3> mnesina:set_debug_level(debug).
   
2. ** exception error: undefined function mnesina:set_debug_level/1
   
3. 4> mnesia:set_debug_level(debug).
   
4. none
   
5. 5> mnesia:info().
   
6. ---> Processes holding locks <---
   
7. ---> Processes waiting for locks <---
   
8. ---> Participant transactions <---
   
9. ---> Coordinator transactions <---
   
10. ---> Uncertain transactions <---
    
11. ---> Active tables <---
    
12. schema         : with 3        records occupying 663      words of mem
    
13. col            : with 1        records occupying 344      words of mem
    
14. super          : with 1        records occupying 338      words of mem
    
15. ===> System info in version "4.14.1", debug level = debug <===

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shijiang1130

在做transaction debug时很有用

patagonia2

很有用

patagonia2

感谢各位对er的大力支持！