Frm-40735:on-error Trigger raised unhandled exception ORA-03114

Database migrated to Oracle 11g, it is normal to use Sqlplus to connect to the target library locally .

When you use form to connect oracle11g, you encounter Frm-40735:on-error trigger raised unhandled exception ORA-03114

[Oracle@db01 ~]$ oerr ORA 03114
03114, 00000, "Not connected to ORACLE"
*cause:
*action:

ORA-03114 Indicates that there is no connection to Oracle.

Checked the configuration of C:\orant\NET80\ADMIN\Tnsnames.ora and%oracle_home%\network\admin\tnsnames.ora is not a problem.

Check environment variables, and there is no problem.

C:\Documents and settings\>Echo%path%
D:\oracle\product\10.2.0\db_1\BIN; C:\Program Files\Common Files\netsarang; C:\WINDOWS\system32; C:\WIN
dows; C:\WINDOWS\System32\Wbem; C:\Program Files\intel\dmix;d:\program files\mysql\mysql Server 5.1\bi
N C:\orant\bin; C:\orant\jdk\bin

For what reason.

When checking Windows environment variables, it is found that there are oracle_home settings, remove the oracle_home, solve the problem.