Solution : https://service.sap.com/sap/support/notes/1471380 (SAP Service marketplace login required)
Key words :
connection pool uwlpool_<alias>$<connectortype>, connection pool uwlpool_<aliasname>$<connectortype>, uwl xml configuration userdecisionnote property, uwl work item attachments needed, current pool size limit, uwl delta pull activated, uwl preview area shows, java workflow public api, r3systeminfo#plain###problem occured, uwl solution sap netweaver 7
Related Notes :
1133821 | UWL Destination Service configuration |