ORA-06512 網(wǎng)上最容易查到的解釋為

Cause

This error is caused by the stack being unwound by unhandled exceptions in your PLSQL code.

The options to resolve this Oracle error are:

• Fix the condition that is causing the unhandled error.
• Write an exception handler for this unhandled error.
• Contact your DBA for help.

The ORA-06512 error message indicates the line number of the unhandled error in the PLSQL code. This is quite useful when troubleshooting.

舉個(gè)栗子來(lái)了解此異常

創(chuàng)建存儲(chǔ)過(guò)程TestProc，參數(shù)v_number是一個(gè)長(zhǎng)度為2的數(shù)字， 存儲(chǔ)過(guò)程中將100賦值給v_number，執(zhí)行存儲(chǔ)過(guò)程后提示異常，ORA-06502表示發(fā)生的錯(cuò)誤；ORA-06512表示發(fā)生的行數(shù)，本例中 因?yàn)?00的是3位數(shù)字， v_number只能處理2位數(shù)字

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: 數(shù)字或值錯(cuò)誤 : number precision too large
ORA-06512: 在 "BOSS643.TESTPROC", line 4
ORA-06512: 在 line 2

 針對(duì)上述問(wèn)題，可以重新定義數(shù)值長(zhǎng)度解決這個(gè)問(wèn)題， v_number定義為3

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> 

如果將數(shù)值型修改成其他類(lèi)型后也是同樣的， 例如字符串，v_str設(shè)置為處理長(zhǎng)度為10的字符串， 當(dāng)給v_str賦值大于長(zhǎng)度10的字符串后， 提示數(shù)字或者值錯(cuò)誤，符串緩沖區(qū)太小

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: 數(shù)字或值錯(cuò)誤 : character string buffer too small
ORA-06512: 在 "BOSS643.TESTPROC2", line 4
ORA-06512: 在 line 2

重新定義varchar2長(zhǎng)度

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> 

當(dāng)然你也可以自定義異常來(lái)處理，例如當(dāng)出現(xiàn)異常后提示“數(shù)值越界” ，此方法將異常捕獲提示更加明確，個(gè)人認(rèn)為ORA-06502異常已經(jīng)十分清楚了， 具體還看存儲(chǔ)過(guò)程對(duì)應(yīng)的需求是否有明確提示需求

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, "數(shù)值v_number越界");
  8  END;
  9  /
 
Procedure created
 
SQL> exec TestProc();
 
begin TestProc(); end;
 
ORA-20001: 數(shù)值v_number越界
ORA-06512: 在 "BOSS643.TESTPROC", line 7
ORA-06512: 在 line 2

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