The database maximum pool size should equal the number of active users. Otherwise, an error with a message like the following can occur:
Caused by: javax.resource.ResourceException: IJ000655: No managed connections available within configured blocking timeout (30000 [ms])
This pool size parameter is specified as “imaDbMaxPoolSize” in the ImageMaster configuration file (configureAppServer.config) and by default is set to 200.
The value might still need to be increased more in case of heavy user interaction (e.g. with many exports, many searches in multiple document types, or in case of using many general asynchronous tasks in the client).