3111328 - Error 834; hanging processes - SAP ASE

• ASE errorlog contains 834 error:
  

  Error: 834, Severity: 20, State: 4
  Illegal attempt to clean buffer: BUF=0x0x00000004d933f4a0, MASS=0x0x00000004d933f4a0, Buf#=0, page=0x0x0000000485ad0000, dbid=19, Mass vdevno=34, vpage=582400, Buf lpage=194400, Mass stat=0x201008, Buf stat=0x1, size=16384, cid=0 ('default data cache'), Pinned xdes=0x(nil), spid=0.

• As a result connection(s) hang on when trying to access this buffer
  
  
• The error on the log does not include a stack
• But when running dbcc stacktrace or memory dump analysis, the stack reported includes:
  
  cm_dbclean
  bufdbclean
  dbt_removeall
  dbt_get
  dbt_get_with_statuscheck

SAP Adaptive Server Enterprise (ASE)

834, hanging, Sybase, ASEServer, SAPASE, dataserver, CR821795, CR#821795, 821795 , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed