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Cisco Bug: CSCvu30296 - Unable to write to CDB after extensive use of WE UI

Last Modified

May 26, 2020

Products (1)

  • Cisco WAN Automation Engine (WAE)

Known Affected Releases

7.1.3 7.2.1

Description (partial)

Symptom:
After an extensive use of  WAE UI to configure WAE, the WAE UI got stuck and user is not even able to commit changes at CLI.
There are many maapi sessions stuck in the system, the workaround is restarting WAE services.

wae@wae> show users 
SID   USER  CTX   FROM          PROTO LOGIN    CONFIG MODE
*9598 wae   cli   10.57.236.111 ssh   20:55:28            
 9597 admin maapi 127.0.0.1     tcp   20:37:12 private    
 9596 admin maapi 127.0.0.1     tcp   20:37:12            
 9595 admin maapi 127.0.0.1     tcp   20:37:08 private    
 9594 admin maapi 127.0.0.1     tcp   20:37:08            
 9593 admin maapi 127.0.0.1     tcp   20:32:12 private    
 9588 admin maapi 127.0.0.1     tcp   20:32:09 private    
 9581 admin maapi 127.0.0.1     tcp   20:32:03 private    
 9544 admin webui 10.57.236.111 https 19:56:43 private    
 9543 admin maapi 127.0.0.1     tcp   19:36:33 private    
 9541 admin maapi 127.0.0.1     tcp   19:36:29 private    
 9539 admin maapi 127.0.0.1     tcp   19:32:00 private    
 9537 admin maapi 127.0.0.1     tcp   19:31:33 private    
 9527 admin maapi 127.0.0.1     tcp   19:31:30 private    
 9499 admin maapi 127.0.0.1     tcp   19:31:20            
 9498 admin maapi 127.0.0.1     tcp   19:31:20            
 9497 admin maapi 127.0.0.1     tcp   19:31:20 private    
 9495 admin maapi 127.0.0.1     tcp   19:31:20            
 9492 admin maapi 127.0.0.1     tcp   19:31:20            
 9460 admin maapi 127.0.0.1     tcp   18:31:17 private    
 9458 admin maapi 127.0.0.1     tcp   18:31:13 private    
 9456 admin maapi 127.0.0.1     tcp   18:26:17 private    
 9451 admin maapi 127.0.0.1     tcp   18:26:13 private    
 9420 admin maapi 127.0.0.1     tcp   17:26:08 private    
 9418 admin maapi 127.0.0.1     tcp   17:26:05 private    
 9416 admin maapi 127.0.0.1     tcp   17:21:08 private    
 9411 admin maapi 127.0.0.1     tcp   17:21:05 private    
 9381 admin maapi 127.0.0.1     tcp   16:21:02 private    
 9379 admin maapi 127.0.0.1     tcp   16:20:59 private    
 9377 admin maapi 127.0.0.1     tcp   16:16:03 private    
 9372 admin maapi 127.0.0.1     tcp   16:15:59 private    
 9365 admin maapi 127.0.0.1     tcp   16:15:54 private    
 9340 admin webui 10.57.211.120 https 15:22:39 private    
 9339 admin maapi 127.0.0.1     tcp   15:18:57 private    
 9331 admin maapi 127.0.0.1     tcp   15:16:00 private    
 9326 admin maapi 127.0.0.1     tcp   15:15:51 private    
 9274 admin webui 10.57.211.120 https 15:12:27 private

Conditions:
extensive use of WAE UI. We observed this behavior in WAE 7.1.3, and we upgraded to 7.2.1 patch 1, same issue.
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