Unable to launch OneClick WebApp - There are too many active connections right now
Article ID: 407697
Updated On:
Products
Issue/Introduction
Since upgraded Spectrum to 24.3.12, the OneClick WebApp does not launch successfully.
The following message is displayed:
Reconnecting... (4)
There are too many active connections right now, please try again later.
Error in the $SPECROOT/webtomcat/bin/logs/webswing.log file:
2025-08-18 21:23:34,531 WARN [https-jsse-nio-9443-exec-10] (SessionPoolManagerImpl.java:1088) Can not start new session of /oneclickwebapp. No free session pool.
2025-08-18 21:23:34,539 INFO [https-jsse-nio-9443-exec-14] (BrowserWebSocketConnectionEndpoint.java:181) Websocket to browser closed, session [2], close code [1000], reason [Disconnecting instance.]!
2025-08-18 21:41:15,608 ERROR [https-jsse-nio-9443-exec-13] (SessionPoolManagerImpl.java:1632) Could not find target session pool connection for downloadSessionPoolLogs [undefined]!
Error in the $SPECROOT/webtomcat/logs/catalina.log file:
2025-08-18 21:22:14,480 ERROR [SP Reconnect Scheduler] (SessionPoolInstanceServiceImpl.java:309) Failed to connect websocket to server [wss://oneclick_server.infra.xxxx.com:9443/spectrum]! SSL handshake has failed
Environment
DX NetOps Spectrum 24.3.11 and above
Cause
There is a wrong FQDN in the $SPECROOT/webtomcat/bin/webswing-sessionpool.properties file:
webswing.server.websocketUrl = wss://oneclick_server.infra.xxxx.com:9443/spectrum
Resolution
Fixed the typos (wrong FQDNs) in the $SPECROOT/webtomcat/bin/webswing-sessionpool.properties file and stop/start the WebTomcat service.
**Note** - value should match webswing.server.websocketUrl entry in $SPECROOT/webtomcat/bin/webswing-admin.properties
$SPECROOT/webtomcat/bin/stopWebTomcat.sh
$SPECROOT/webtomcat/bin/startWebTomcat.sh
Additional Information
In Spectrum 24.3.11 and higher we added the Webswing Cluster.
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