我觉得你可以用10046试一下，

SQL> oradebug setmypid

Statement processed.

SQL> alter session set events '10046 trace name context forever , level 12';

Session altered.

SQL> select sys_guid() from dual;

SYS_GUID()

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

E5CFEDBEEACBA7B7E053020011AC3DE9

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

Session altered.

SQL> oradebug tracefile_name

/u01/app/oracle/diag/rdbms/xe/xe/trace/xe_ora_42935.trc

问题已经处理了，dns的问题导致！在hosts文件里面配置了主机名和ip的对应关系后恢复正常