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2802744 - I/O error while writing to a dbfile which is a raw partition - SAP IQ


  • IQ server report many I/O errors when writing to dbfile that is a raw partition.
  • The following errors reported in the iqmsg file:

Exception Thrown from oslib/hos_bio.cxx:912, Err# 17, tid 1405 origtid 1405
O/S Err#: 5, ErrID: 518 (hos_bioexception); SQLCode: -1006076, SQLState: 'QBA76', Severity: 14
[20314]: I/O Error on file /IQ_dbfile/rawdisk_file_link -- (oslib/hos_bio.cxx 912)
Write blk 26213358 for 12 blk(s) (dbBlkSz 8192)
{1437} main Bufman: I/O error while writing; from slib/s_buf.cxx:2428
{1437} expected:
{1437} head:
{1437} buffer: 0x0d0010000900888379bee50e00000000778e072900000000c708000002000000btype=13,pbn=249937529,txn=688361079,sp=2247,nlb=16,npb=9,iscmp=0,ctr=136,cta=131,ver=2,pb=0,pus=0
Expected Pad1: 5 (0x05), Pad2: 5101 (0x13ed)
Got Pad1: 0 (0x00), Pad2: 0 (0x0000)

  • The error reported pbn is closed to the max physical block number for the device that listed in the sp_iqstatus



  • SAP IQ 15.4
  • SAP IQ 16.0


SAP IQ 16.0 ; SAP IQ 16.1 ; SAP Sybase IQ 15.4


KBA , BC-SYB-IQ , Sybase IQ , Problem

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