https://userapps.support.sap.com/sap/support/knowledge/en/3747383
3747383 - Error 1601: "Not Enough User Connections" with Related Errors 8601, 1251, and SPID Hang -...
Applications encounter issues connecting to the ASE Server. The following error is reported in the errorlog of ASE Server: Error: 1601, Severity: 17, State: 1...