oracle question SQLNET

Fatal NI connect error 12203, connecting to:  (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=BEQ)(PROGRAM=oracle80)(ARGV0=oracle80ORCL)(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))')))(CONNECT_DATA=(SID=ORCL)(CID=(PROGRAM=C:\Program Files\xxxxxxxxxxxxxx.exe)(HOST=yyyyyyyyy)(USER=Administrator))))    VERSION INFORMATION:       TNS for 32-bit Windows: Version 8.0.6.3.0 - Production       Oracle Bequeath NT Protocol Adapter for 32-bit Windows: Version 8.0.6.3.0 - Production       Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 8.0.6.3.0 - Production   Time: 12-JUL-2011 10:17:20   Tracing not turned on.   Tns error struct:     nr err code: 12203     TNS-12203: TNS:unable to connect to destination     ns main err code: 12560     TNS-12560: TNS:protocol adapter error     ns secondary err code: 0     nt main err code: 530     TNS-00530: Protocol adapter error     nt secondary err code: 0     nt OS err code: 0.

What is this BEQ, connection / protocol and why does this makes my application xxxxxx.exe restart ?