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Bulk Snap: Truncated Snap
I recently had a fond memory of one of the intricacies of most PL / SQL fetch and insert operations. I always get this situation error with FETCH:
ORA-06502: PL / SQL: true numeric value or error: bulk binding: truncated binding
The purpose of the procedure is to convert the numbers from the temporary staging table to a new real column of the correct size. Loading table. Easy no? ?
The items I selected in the cursor did not logically fit into the tabular restore target of my cursor.
I positioned the cursor with a query to prepare the temporary table (larger VARCHAR2 columns), not the actual table (exactly the same as the VARCHAR2, NUMBER and DATE columns).
But I defined my food table type to get the results of hovering over my real table:
CURSOR c_dl EST
CHOOSE ...
...
...
DE my_staging_table stg
WHERE Action IN ('INSERT', 'UPDATE');
TYPE my_load_table_tt TABLE my_load_table% ROWTYPE
INDEX BY PLS_INTEGER;
load_data_arr my_load_table_tt;
START
OPEN c_dl;
BUCKLE
FETCH c_dl BULK INTO collects load_data_arr LIMIT 1000; ----- This is where the error occurs!
FORALL ii In a specific person .. load_data_arr.COUNT
INSERT INTO my_load_table
...
...
The Bulk Bind: Truncated Bind error is caused by the fact that a cursor that contains larger elements does not logically match a particular array / array type – the columns are probably too large.
To fix this, I abandoned the definition of the table type, making it a positive intermediate table for beer pong. Then FETCH works well as does INSERT.
But wait, why the INSERT failed when I inserted the best (possibly) large cursor into the exact match table?
The
INSERT continues because the allocated items fit – conversions and checks (which have been covered in this particular code so far) ensure that all items are indeed the size they should be in some updated table. As a result, there is absolutely nothing to complain about the collage.
LOG ERROR UNLIMITED LIMITS
If one column in a row was too large or someAt that time it was not in the correct format, the entire INSERT operation would have failed. I have not used the LOG ERRORS clause as usual.
IF or some other protocol is bad, I want to load all the good entries and select the weakest. For this I used the most important clause LOG ERRORS REJECT LIMIT UNLIMITED at each end of the INSERT statement:
This LOG ERRORS REJECT LIMIT UNLIMITED clause ensures that every bit of blank strings is inserted and that all “bad” strings are logged to the error framework, in my case named ERR $ MY_LOAD_TABLE.
I have previously created an error table log, usually using the following command: START
DBMS_ERRLOG.create_error_log (dml_table_name => 'MY_LOAD_TABLE');
THE END ;
We intentionally define staging tables with generous VARCHAR2. We want to leave some leeway in the in-depth consultation because we know we can remove punctuation marks, search, format dates, and perform other conversions during the validation phase. This means that each of these checks is up to us to make sure the data is correct before the last insert. YesThere is only one way to do it – there are many other good approaches.
My memory – especially when it needs to be done quickly – is to pay attention to the nuances of functions when using them. I will not repeat this mistake again :).
For a full discussion of bulk processing with BULK COLLECT and FORALL, see Steve Feuerstein’s article PL / SQL 101: Bulk processing with BULK COLLECT and FORALL.
You want to write each CLOB of any type to a separate file and include that image name as part of the master info record. Something like this:
Declare
as data_file utl_file.file_type; clob_file utl_file.file_type; Buffer Varchar2 (32767); Pose pls_integer; pls_integer symbols; myquery varchar2 (4000): = 'Select column1 ||' '~' '|| Column3, ' || '' 'Column2_' '|| Row number, column 2 of my table '; mycursor sys_refcursor; my result is varchar2 (4000); myfile varchar2 (120); Myclob bump;begin data_file Utl_file: = .fopen ('D42', 'mydata', 'w'); open mycursor for myquery; ribbon hover over my result, my filename, my hood; Say goodbye when mycursor% notfound; so if myclob is nonzero and dbms_lob.getlength (myclob)> 4 then my result: = my result || '~' || my file; clob_file: =utl_file.fopen ("D42", myfilename, "w", 32767); Location: = 1; Symbols: = 32767; whilePosition
There is a data_file that contains all non-CLOB data, including the advertising name of the individual file to which you write CLOB lines. The file name can be anything as long as it is unique; I used rownum , but you can use your row's primary key id if, for example, you have one.
create mytable (column1 percent, clob, column2, column3, varchar2 (10));add values to my table (Column1, Column2, Column3) (1, zero, 'First');insert values using mytable (Column1, Column2, Column3) (2, 'Second CLOB', 'Second');insert into mytable (Column1, Column2, Column3) Beliefs (3, 'Third CLOB', 'Third');
1 ~ First2 ~ Second ~ Column2_23 ~ Third ~ Column2_3
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If I then run SQL * Loader for this data file and available CLOB files and check the file:
load dataUTF8 character setcutin array matable2Fields are terminated with "~"null columns to the right( Column of characters 1 (10), Three-digit column (10), fill character clob_filename (120), Column Lobfile 2 (clob_filename) removed from EOF)
select * from mytable2; COLUMN1 COLUMN2 COLUMN3---------- ------------------ ---------- 1 First 2 seconds CLOB second 3 Third CLOB Third
(I still think you should start with built-in tools, data performance, or just copying data internally between certain schemas as shown in previous questions ...)
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