Problems accessing objects with PL/SQL developer

[tonimenen]

Hello, I am new in PL/SQL developer and I have a problem,

When I connect i can connect to my server but I get this error in C:\Program Files\PLSQL Developer - sqlnet.log,

***********************************************************************
Fatal NI connect error 12560, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=BEQ)(PROGRAM=oracle)(ARGV0=oracleORCL)(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))'))(CONNECT_DATA=(SID=ORCL)(CID=(PROGRAM=C:\Program Files\PLSQL Developer\plsqldev.exe)(HOST=ESBARN0L016903)(USER=amenende))))

VERSION INFORMATION:
TNS for 32-bit Windows: Version 8.1.7.4.0 - Production
Oracle Bequeath NT Protocol Adapter for 32-bit Windows: Version 8.1.7.4.0 - Production
Time: 30-NOV-2010 15:48:12
Tracing not turned on.
Tns error struct:
nr err code: 0
ns main err code: 12560
TNS-12560: TNSrotocol adapter error
ns secondary err code: 0
nt main err code: 530
TNS-00530: Protocol adapter error
nt secondary err code: 126
nt OS err code: 0

After this i try to access to tables in the object view, and I get this error : ORA-03114 : not connected to oracle.

Any idea what can be the problem ?

 

[Marco Kalter]

It seems like an Oracle Client issue. Do you perhaps have multiple Oracle Homes installed? If so, can you go to Tools > Preferences > Oracle / Connection and select a different home than this 8.1.7 version?