ORA-06512数字或值错误字符串缓冲区太小异常详解

SQL> CREATE OR REPLACE PROCEDURE TestProc AS
  2    v_number number(2);
  3  BEGIN
  4    v_number := 100;
  5  END;
  6  /
 
Procedure created
 
SQL> execute TestProc();
 
begin TestProc(); end;
 
ORA-06502: PL/SQL: 数字或值错误 : number precision too large
ORA-06512: 在 "BOSS643.TESTPROC", line 4
ORA-06512: 在 line 2

SQL> CREATE OR REPLACE PROCEDURE TestProc AS
  2    v_number number(3);
  3  BEGIN
  4    v_number := 100;
  5  END;
  6  /
 
Procedure created
 
SQL> execute TestProc();
 
PL/SQL procedure successfully completed
 
SQL> 

SQL> CREATE OR REPLACE PROCEDURE TestProc2 AS
  2    v_str varchar2(10);
  3  BEGIN
  4    v_str := 'This is a test string';
  5  END;
  6  /
 
Procedure created
 
SQL> execute TestProc2();
 
begin TestProc2(); end;
 
ORA-06502: PL/SQL: 数字或值错误 : character string buffer too small
ORA-06512: 在 "BOSS643.TESTPROC2", line 4
ORA-06512: 在 line 2

SQL> CREATE OR REPLACE PROCEDURE TestProc2 AS
  2    v_str varchar2(512);
  3  BEGIN
  4    v_str := 'This is a test string';
  5  END;
  6  /
 
Procedure created
 
 
SQL> execute TestProc2();
 
PL/SQL procedure successfully completed
 
SQL> 

SQL> CREATE OR REPLACE PROCEDURE TestProc AS
  2    v_number number(2);
  3  BEGIN
  4    v_number := 100;
  5  EXCEPTION
  6    WHEN OTHERS THEN
  7      RaiSE_APPLICATION_ERROR(-20001, '数值v_number越界');
  8  END;
  9  /
 
Procedure created
 
SQL> exec TestProc();
 
begin TestProc(); end;
 
ORA-20001: 数值v_number越界
ORA-06512: 在 "BOSS643.TESTPROC", line 7
ORA-06512: 在 line 2