Question

在PLSQL语句块中，oracle中的错误块数是什么意思 -

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Answer 1

如果没有更多代码，很难肯定。但是在调试中经常使用这种方法来确定代码中发生错误的位置。在EXCEPTION块中，它可能会在某处打印n_err_block。这样，如果它打印＆＃34; n_err_block = 200＆＃34;，则开发人员知道错误发生在n_err_block := 200;和n_err_block := 300;之间。例如：

declare
  n_err_block number;
begin
  n_err_block := 100;
  -- try something
  insert into table values (1, 2, 3);
  n_err_block := 200;
  -- try something else
  insert into table2 values (4, 5, 6);
  n_err_block := 300;
  update table3 set value2 = 7;
exception when others then
  dbms_output.print_line(DBMS_UTILITY.FORMAT_ERROR_BACKTRACE);
  dbms_output.print_line('n_err_block = ' || n_err_block);
end;
/

Answer 2

很好的答案，kfinity，我认为值得强调你在那里添加的内容：DBMS_UTILITY.FORMAT_ERROR_BACKTRACE。此函数（和12.1及更高版本中的utl_call_stack的类似功能）追溯到引发错误的行号。

因此，如果您看到代码似乎跟踪了在引发错误之前您的程序有多远，请废弃所有这些并确保在记录错误时调用DBMS_UTILITY.FORMAT_ERROR_BACKTRACE

oracle中错误块数的含义是什么？

2 个答案: