执行过程时，我没有遇到数据发现错误。但该行实际上存在于表中。请帮助我。
**Code**
*CREATE OR REPLACE PACKAGE BODY SCOTT."TRUNC_ANALYZE_PKG"
as
PROCEDURE TRUNC_TABLE(v_owner in varchar2, v_tab_name IN VARCHAR2) AS
t_owner varchar2(30) ;
BEGIN
-- Truncate only EMP tables
SELECT owner
INTO t_owner
FROM all_tables
WHERE table_name = upper(v_tab_name)
and owner in ('EMP') ;
execute immediate ('TRUNCATE TABLE EMP.'||upper(v_tab_name)) ;
EXCEPTION
WHEN NO_DATA_FOUND
THEN
RAISE_APPLICATION_ERROR(-20023, v_tab_name||' Schema name or Table name is not valid. '||SUBSTR(SQLERRM,1,500));
WHEN OTHERS
THEN
RAISE_APPLICATION_ERROR(-20023, v_tab_name||SUBSTR(SQLERRM,1,500));
END TRUNC_TABLE;
PROCEDURE ANALYZE_TABLE(v_owner in varchar2, v_tab_name IN VARCHAR2) AS
v_tab_owner varchar2(30) := upper(v_owner) ;
v_tab_name2 varchar2(30) := upper(v_tab_name) ;
BEGIN
dbms_ddl.analyze_object('TABLE',v_tab_owner,v_tab_name2,'ESTIMATE','',20,'');
exception
when others then
/* Raise the error to the calling proc id
required. */
raise;
END ANALYZE_TABLE;
END TRUNC_ANALYZE_PKG;
/*
错误信息：
SQL> exec SCOTT.DBA_PKG.TRUNC_TABLE('EMP','EMPLOYEE');
BEGIN DBA_PKG.TRUNC_TABLE('EMP','EMPLOYEE'); END;
*
ERROR at line 1:
ORA-20023: STG_FIRMINFO Schema name or Table name is not valid. ORA-01403: no
data found
ORA-06512: at "EIB_USER.DBA_PKG", line 21
ORA-06512: at line 1
但实际上 EMPLOYEE 表存在于 all_tables 中。我无法破解为什么会捕获此异常。请帮助我。
谢谢，波瓦。