在下面的代码中引发异常后，我将如何继续while循环？
DECLARE
v_blob_data BLOB;
v_blob_len NUMBER;
v_position NUMBER;
v_raw_chunk RAW(10000);
v_char CHAR(1);
c_chunk_len number := 1;
v_line VARCHAR2 (32767) := NULL;
v_data_array wwv_flow_global.vc_arr2;
v_rows number;
v_sr_no number := 1;
v_first_line_done boolean := false;
v_error_cd number :=0;
v_quote_pos1 NUMBER;
v_quote_pos2 NUMBER;
v_enclosed_str VARCHAR(200);
v_errmsg VARCHAR2(4000);
BEGIN
delete from TEMP_MM_UPDATE where username = :P1_USER_ID;
-- Read data from wwv_flow_files</span>
select
blob_content
into v_blob_data
from wwv_flow_files
where name = :P2_FILE_UPLOAD;
v_blob_len := dbms_lob.getlength(v_blob_data);
v_position := 1;
-- Read and convert binary to char</span>
WHILE ( v_position <= v_blob_len )
LOOP
begin
v_raw_chunk := dbms_lob.substr(v_blob_data,c_chunk_len,v_position);
v_char := chr(hex_to_decimal(rawtohex(v_raw_chunk)));
v_line := v_line || v_char;
v_position := v_position + c_chunk_len;
-- When a whole line is retrieved </span>
IF v_char = CHR(10) THEN
LOOP
--Make sure there's something to replace
IF INSTR(v_line, '"', 1, 1) = 0 THEN
EXIT; -- If nothing to replace, exit loop and don't try
END IF;
--Find the position of the first and second quotes in the line of text
v_quote_pos1 := INSTR(v_line, '"', 1, 1);
v_quote_pos2 := INSTR(v_line, '"', 1, 2);
--Extract the inner string
v_enclosed_str := SUBSTR(v_line, v_quote_pos1 + 1, v_quote_pos2 - v_quote_pos1 - 1);
--perform the replacement
v_line := SUBSTR(v_line, 0, v_quote_pos1 - 1) || REPLACE(v_enclosed_str, ',', '<') || SUBSTR(v_line, v_quote_pos2 + 1);
END LOOP;
-- Convert comma to : to use wwv_flow_utilities </span>
v_line := REPLACE (v_line, ',', ':');
v_line := REPLACE (v_line, '<', ',');
v_line := REPLACE (trim(v_line), '-', NULL);
--v_line := REPLACE (trim(v_line), '"', NULL);
-- Convert each column separated by : into array of data </span>
v_data_array := wwv_flow_utilities.string_to_table (v_line);
--Check to see if the row of column headers has already been parsed through
IF(v_first_line_done != true)THEN
v_first_line_done := true;
--Check column order in spreadsheet
IF(v_data_array(1) LIKE '%Username%' AND
v_data_array(2) LIKE '%NDN%' AND
v_data_array(3) LIKE '%PCFN%') THEN
v_error_cd := 0;
v_line := NULL;
ELSE
v_error_cd := 1;
END IF;
--If first line is done and the column order is correct then
ELSIF(v_first_line_done = true AND v_error_cd = 0) THEN
-- Insert data into target table </span>
EXECUTE IMMEDIATE 'insert into TEMP_MM_UPDATE
(USERNAME,
RPT_FLAG,
PCFN)
values (:1,:2,:3)'
USING
v_data_array(1),
v_data_array(2),
v_data_array(3);
-- Clear out
v_line := NULL; v_sr_no := v_sr_no + 1;
END IF;
END IF;
exception
WHEN OTHERS then
v_errmsg := SQLERRM;
insert into temp_mm_update (username,error_desc)
values (:P1_USER_ID, v_errmsg);
END;
END LOOP;
DELETE FROM WWV_FLOW_FILES where name = :P2_FILE_UPLOAD;
DELETE FROM TEMP_MM_UPDATE WHERE USERNAME IS NULL AND PCFN IS NULL;
IF(v_error_cd = 1) THEN
INSERT INTO temp_mm_update (USERNAME, ERROR_DESC)
VALUES (:P1_USER_ID, 'Error. Please check column order in spreadsheet.');
END IF;
EXCEPTION
WHEN NO_DATA_FOUND THEN
insert into temp_mm_update (username,error_desc)
values (:P1_USER_ID, 'No Data Found.');
WHEN OTHERS then
v_errmsg := SQLERRM;
insert into temp_mm_update (username,error_desc)
values (:P1_USER_ID, v_errmsg);
END;
当我将异常放在循环内部时，程序似乎永远不会完成，我最终得到了一个＆＃34; NOWAIT＆＃34;当我尝试删除表格或类似的内容时出错。
如果我拿出＆＃34; BEGIN＆＃34;在循环之后，并在循环中取出异常，但我希望能够指定每个记录的错误而不是处理正确的记录，然后在具有例如9个值的记录之后停止在一个只接受6的列中。
任何人都可以帮忙吗？
谢谢，
史蒂芬
编辑：
我换了线：
ELSIF（v_first_line_done = true AND v_error_cd = 0）
到
ELSIF（v_first_line_done = true AND v_error_cd = 0 AND（v_data_array（1）不为空或者v_data_array（1）不喜欢＆＃39;％ - ％＆＃39;））
并且该过程结束，但是当涉及到引发和异常的记录时，以下所有记录都具有相同的异常。
我的CSV文件示例：
用户名NDN PCFN
DOOL0008 X 808461
DOOL0008 X 886332
DOOL0008 X 887223
DOOL0008 X 887992
DOOL0008 X 904959
DOOL0008 X 904959
DOOL0008 X 904968
DOOL0008 X 904968
因此，例如，如果列MM（数据类型为VARCHAR2（1））的值为＆＃34; XX＆＃34;在第三条记录上，异常将被提出，该值太大，然后对于记录4-8，将引发相同的异常。
答案 0 :(得分：0)
通过玩我的代码，我发现了什么是错的。
我需要将以下行添加到我的异常代码块中：
v_line := NULL; v_sr_no := v_sr_no + 1;
最终代码：
DECLARE
v_blob_data BLOB;
v_blob_len NUMBER;
v_position NUMBER;
v_raw_chunk RAW(10000);
v_char CHAR(1);
c_chunk_len number := 1;
v_line VARCHAR2 (32767) := NULL;
v_data_array wwv_flow_global.vc_arr2;
v_rows number;
v_sr_no number := 1;
v_first_line_done boolean := false;
v_error_cd number :=0;
v_quote_pos1 NUMBER;
v_quote_pos2 NUMBER;
v_enclosed_str VARCHAR(200);
v_errmsg VARCHAR2(4000);
BEGIN
delete from TEMP_MM_UPDATE where username = :P1_USER_ID;
-- Read data from wwv_flow_files</span>
select
blob_content
into v_blob_data
from wwv_flow_files
where name = :P2_FILE_UPLOAD;
v_blob_len := dbms_lob.getlength(v_blob_data);
v_position := 1;
-- Read and convert binary to char</span>
WHILE ( v_position <= v_blob_len )
LOOP
begin
v_raw_chunk := dbms_lob.substr(v_blob_data,c_chunk_len,v_position);
v_char := chr(hex_to_decimal(rawtohex(v_raw_chunk)));
v_line := v_line || v_char;
v_position := v_position + c_chunk_len;
-- When a whole line is retrieved </span>
IF v_char = CHR(10) THEN
LOOP
--Make sure there's something to replace
IF INSTR(v_line, '"', 1, 1) = 0 THEN
EXIT; -- If nothing to replace, exit loop and don't try
END IF;
--Find the position of the first and second quotes in the line of text
v_quote_pos1 := INSTR(v_line, '"', 1, 1);
v_quote_pos2 := INSTR(v_line, '"', 1, 2);
--Extract the inner string
v_enclosed_str := SUBSTR(v_line, v_quote_pos1 + 1, v_quote_pos2 - v_quote_pos1 - 1);
--perform the replacement
v_line := SUBSTR(v_line, 0, v_quote_pos1 - 1) || REPLACE(v_enclosed_str, ',', '<') || SUBSTR(v_line, v_quote_pos2 + 1);
END LOOP;
-- Convert comma to : to use wwv_flow_utilities </span>
v_line := REPLACE (v_line, ',', ':');
v_line := REPLACE (v_line, '<', ',');
v_line := REPLACE (trim(v_line), '-', NULL);
--v_line := REPLACE (trim(v_line), '"', NULL);
-- Convert each column separated by : into array of data </span>
v_data_array := wwv_flow_utilities.string_to_table (v_line);
--Check to see if the row of column headers has already been parsed through
IF(v_first_line_done != true)THEN
v_first_line_done := true;
--Check column order in spreadsheet
IF(v_data_array(1) LIKE '%Username%' AND
v_data_array(2) LIKE '%NDN%' AND
v_data_array(3) LIKE '%PCFN%') THEN
v_error_cd := 0;
v_line := NULL;
ELSE
v_error_cd := 1;
END IF;
--If first line is done and the column order is correct then
ELSIF(v_first_line_done = true AND v_error_cd = 0) THEN
-- Insert data into target table </span>
EXECUTE IMMEDIATE 'insert into TEMP_MM_UPDATE
(USERNAME,
RPT_FLAG,
PCFN)
values (:1,:2,:3)'
USING
v_data_array(1),
v_data_array(2),
v_data_array(3);
-- Clear out
v_line := NULL; v_sr_no := v_sr_no + 1;
END IF;
END IF;
exception
WHEN OTHERS then
v_errmsg := SQLERRM;
insert into temp_mm_update (username,error_desc)
values (:P1_USER_ID, v_errmsg);
v_line := NULL; v_sr_no := v_sr_no + 1;
END;
END LOOP;
DELETE FROM WWV_FLOW_FILES where name = :P2_FILE_UPLOAD;
DELETE FROM TEMP_MM_UPDATE WHERE USERNAME IS NULL AND PCFN IS NULL;
IF(v_error_cd = 1) THEN
INSERT INTO temp_mm_update (USERNAME, ERROR_DESC)
VALUES (:P1_USER_ID, 'Error. Please check column order in spreadsheet.');
END IF;
EXCEPTION
WHEN NO_DATA_FOUND THEN
insert into temp_mm_update (username,error_desc)
values (:P1_USER_ID, 'No Data Found.');
WHEN OTHERS then
v_errmsg := SQLERRM;
insert into temp_mm_update (username,error_desc)
values (:P1_USER_ID, v_errmsg);
END;