How to disable trace from JDBC program.

For some reason excessive trace files are getting generated at a high rate on all wait events at db.  How this can be stopped.

SQL> alter system set events '10046 trace name context off';

System altered.

SQL>  SELECT TRACE_TYPE, PRIMARY_ID, QUALIFIER_ID1, WAITS, BINDS

FROM DBA_ENABLED_TRACES;   2

TRACE_TYPE

---------------------

PRIMARY_ID

----------------------------------------------------------------

QUALIFIER_ID1                                    WAITS BINDS

------------------------------------------------ ----- -----

SERVICE_MODULE_ACTION

BISAMP

JDBC Thin Client                                 TRUE  FALSE