1973518 - Error 1621 Type '#' not allowed before login - SAP ASE | SAP Knowledge Base Article

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1973518 - Error 1621 Type '#' not allowed before login - SAP ASE

Symptom

  • ASE errorlog gets clogged with numerous 'error 1621' entries
  • Type value can vary:

Error: 1621, Severity: 18, State: 1
Type '#' not allowed before login.

  • Application or users may experience invalid login attempts.

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Environment

  • SAP Adaptive Server Enterprise (ASE) 12.5 
  • SAP Adaptive Server Enterprise (ASE) 15.7
  • SAP Adaptive Server Enterprise (ASE) 16.0
  • All Supported OS Platforms

Product

SAP Adaptive Server Enterprise 12.5 ; SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0

Keywords

TDS packets, Tabular Data Stream,  TDS_LOGIN, TDS_ECHO , "type 10" , "type 1" , "message 1621", "type '1'" , "type '10'", port number, client application, database driver , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem

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