How do I concatenate CLOB datatypes ?

I'm using Select dbms_lob.substr(Table1.Column, 4000) from Table1 to bring in the clob text ..
But the maximum length of the CLOB text field in the column is 51465....
so I'm trying to concatenate the column field from the same column...
How can we i bring in the whole text from the column?

How can we i bring in the whole text from the column?Why not simply
Select Table1.Column from Table1?
btw.:
clobs can be concatenated with the || (concat) operator:
SQL> select   length(lpad (to_clob ('x'), 50000, 'x')
                || lpad (to_clob ('y'), 50000, 'y')) clob_length
from   dual
CLOB_LENGTH
     100000Edited by: michaels2 on May 14, 2009 8:00 AM

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Reg:CLOB datatype

Hi,
I searched and found how to insert into clob datatype
SQL> create table employee(ename char(11),id number,info clob);
Table created.
SQL> insert into employee values('anil',100,empty_clob());
1 row created.
SQL> update employee set info='jkkkkkkkkkksdflfweuikddddddddddddddddddddddddddddaaaaaaaaaaaaaaaaaaaa';
1 row updated.
SQL> select * from employee;
ENAME               ID
INFO
anil               100
jkkkkkkkkkksdflfweuikdddddddddddddaaaaaaaaaaaaaaaaaaaaaaaaaaaNow if i want to insert another row into this table having clob datatype,
Then how to insert into it

What's the problem exactly?
SQL> create table employee (ename char(11), id number, info clob);
Table created.
SQL> insert into employee values ('anil',100,'here is some info');
1 row created.
SQL> insert into employee values ('fred',200,'here is freds info');
1 row created.
SQL> select * from employee;
ENAME               ID INFO
anil               100 here is some info
fred               200 here is freds info
SQL>

Create clob datatype in a column

Hi,
I am working in oracle9i and solaris 5.8.
I want to create a table with a cloumn contains clob Datatype..
Please explain me how to create a clob datatype in a column and how to assign this and how to insert datas into the datatype...
Regs..

Hey,
Read this below link. It will useful for inserting a clob datatype column,
Re: CLOB
Regards,
Moorthy.GS

How to retrieve data from a field of CLOB datatype?

How can I retrieve data from a field of CLOB datatype in Oracle
8 being called from an ASP or VB application? The recordset
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Thank you in advance for your help.

How can I retrieve data from a field of CLOB datatype in Oracle
8 being called from an ASP or VB application? The recordset
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How to display and edit the clob datatype column from Data base

Hi ,
I have a requiremsnt as below
1) One Table having some columns with CLOB data type along with varchar columns
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Can you please help on this.
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Madhu

Hi,
If you are using an inputText component to display a Character Large Object (CLOB), then you will need to create a custom converter that converts the CLOB to a String.
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http://docs.oracle.com/cd/E2438201/web.1112/e16181/af_validate.htm#BABGIEDH
(section7.4 Creating Custom JSF Converters)
Thanks,
Santosh M E

How to copy a table with LONG and CLOB datatype over a dblink?

Hi All,
I need to copy a table from an external database into a local one. Note that this table has both LONG and CLOB datatypes included.
I have taken 2 approaches to do this:
1. Use the CREATE TABLE AS....
SQL> create table XXXX_TEST as select * from XXXX_INDV_DOCS@ext_db;
create table XXXX_TEST as select * from XXXX_INDV_DOCS@ext_db
ERROR at line 1:
ORA-00997: illegal use of LONG datatype
2. After reading some threads I tried to use the COPY command:
SQL> COPY FROM xxxx/pass@ext_db TO xxxx/pass@target_db REPLACE XXXX_INDV_DOCS USING SELECT * FROM XXXX_INDV_DOCS;
Array fetch/bind size is 15. (arraysize is 15)
Will commit when done. (copycommit is 0)
Maximum long size is 80. (long is 80)
CPY-0012: Datatype cannot be copied
If my understanding is correct the 1st statement fails because there is a LONG datatype in XXXX_INDV_DOCS table and 2nd one fails because there is a CLOB datatype.
Is there a way to copy the entire table (all columns including both LONG and CLOB) over a dblink?
Would greatelly appriciate any workaround or ideas!
Regards,
Pawel.

Hi Nicolas,
There is a reason I am not using export/import:
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Regards,
Pawel.

Setting of CLOB Datatype storage space

Hello All!
I unble to insert more then 4000 characters in clob datatype field
how I increate the storage size of the clob field
I'm working in VB 6.0 and oracle 9i

Oracle will allocate CLOB segments using some default storage options linked to column, table and tablespace.
Example with Oracle 11.2 XE:
SQL> select * from v$version;
BANNER
Oracle Database 11g Express Edition Release 11.2.0.2.0 - Beta
PL/SQL Release 11.2.0.2.0 - Beta
CORE    11.2.0.2.0      Production
TNS for 32-bit Windows: Version 11.2.0.2.0 - Beta
NLSRTL Version 11.2.0.2.0 - Production
SQL> create user test identified by test;
User created.
SQL> grant create session, create table to test;
Grant succeeded.
SQL> alter user test quota unlimited on users;
User altered.
SQL> alter user test default tablespace users;
User altered.
SQL> connect test/test;
Connected.
SQL> create table tl(x clob);
Table created.
SQL> column segment_name format a30
SQL> select segment_name, bytes/(1024*1024) as mb
2 from user_segments;
SEGMENT_NAME                           MB
TL                                  ,0625
SYS_IL0000020403C00001$$            ,0625
SYS_LOB0000020403C00001$$           ,0625
SQL> insert into tl values('01234456789');
1 row created.
SQL> commit;
Commit complete.
SQL> select segment_name, bytes/(1024*1024) as mb
2 from user_segments;
SEGMENT_NAME                           MB
TL                                  ,0625
SYS_IL0000020403C00001$$            ,0625
SYS_LOB0000020403C00001$$           ,0625
SQL>Same example run with Oracle XE 10.2 :Re: CLOB Datatype [About Space allocation]
Edited by: P. Forstmann on 24 juin 2011 09:24

Problem on CLOB datatype after import

I got problem and call to Oracle support and they use DUL for extract data from datafile to dump file and I import everything is done and no error but when I check in CLOB datatype that have space(blank character) separate each character see below
Original
Oracle
After Import
O R A C L E
So the application cannot execute those data.
Anyone have solution how to fix this problem?
Thanks,
Taohiko

if you use a direct insert you are restricted to 4000 characters.
You can put your value in a varchar2 variable and that allows you to insert up to 32767 characters.
declare
my_clob_variable := rpad('x','X',25000);
begin
insert into my_table(my_clob_column)
values(my_clob_variable);
end;

Load Clob datatype into xml db

Hi All,
Please can I know how to load clob datatype in xml database.
In Oracle Data Integrator mapping, my source is clob column and target is xml db.
I get error “incompatible data type in conversion”.
Please can I get some help in resolving the issue.
Thanks.

Also tried
http://docs.oracle.com/cd/B19306_01/appdev.102/b14258/t_xml.htm
getStringVal funtion
but it cannot handle more than 4000 characters.
Please can I know how to map clob source to xml db in ODI

Return CLOB datatype to Java

Hello,
Does anyone have any examples of how a CLOB datatype can be returned from a stored procedure and used in java?
Currently we are building up strings and returning a VARCHAR2 datatype, but are running into the 32k size restriction as some of the strings are too long.
It seems that converting the strings to CLOBs and then returning is the best solution. Has anyone had a similar problem and solved it?
Regards,
Eoin

Create stored procedure like this :
create or replace procedure getclob(var out clob) as
str varchar2(20);
templob CLOB;
begin
str :='mystring';
DBMS_LOB.CREATETEMPORARY(templob, TRUE, dbms_lob.session);
dbms_lob.write(templob,length(str),1,str);
var :=templob;
DBMS_LOB.FREETEMPORARY(templob);
end;
java program to call above stored procedure
import java.sql.*;
import oracle.jdbc.driver.*;
class SPLobInJava
public static void main(String args[]) throws Exception
DriverManager.registerDriver(new
oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection
("jdbc:oracle:thin:@insn104:1521:ora9idb", "scott", "tiger");
CallableStatement cs;
cs = conn.prepareCall("{call getclob(?)}");
cs.registerOutParameter(1,java.sql.Types.CLOB);
cs.execute();
Clob clob =cs.getClob(1);
// do whatever you want with the clob
System.out.println(clob.getSubString(1,5));
cs.close();
conn.close();
}

Passing CLOB datatype to a stored procedure

Hi,
How do I pass a CLOB value to a stored procedure?
I am creating a stored procedure which appends a value to a CLOB datatype. The procedure has 2 in parameter (one CLOB and one CLOB). The procedure is compiled but I'm having problem executing it. Below is a simplified version of the procedure and the error given when the procedure is executed.
SQL> CREATE OR REPLACE PROCEDURE prUpdateContent (
2 p_contentId IN NUMBER,
3 p_body IN CLOB)
4 IS
5 v_id NUMBER;
6 v_orig CLOB;
7 v_add CLOB;
8
9 BEGIN
10 v_id := p_contentId;
11 v_add := p_body;
12
13 SELECT body INTO v_orig FROM test WHERE id=v_id FOR UPDATE;
14
15 DBMS_LOB.APPEND(v_orig, v_add);
16 commit;
17 END;
18 /
Procedure created.
SQL> exec prUpdateContent (1, 'testing');
BEGIN prUpdateContent (1, 'testing'); END;
ERROR at line 1:
ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'PRUPDATECONTENT'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
Any help or hints please.
null

sorry I made a mistake with the in parameter types - it's one NUMBER and one CLOB.

Can we check CLOB datatype to null?

Hi ,
i want check clob datatype to null so i have used decode(col1,null,n1,n2) ..it executes the query but it gives nothing ..doesn't return data only show o ..
can you please tell me how to do ?

Take a look at http://docs.oracle.com/cd/E11882_01/appdev.112/e40758/d_lob.htm#ARPLS66622
CONVERTTOBLOB Procedure
Regards
Etbin

CLOB datatype

I need to have several columns in a table say 14 which would each hold around 8k of data.
Now i want a solution for creating the table and retrieving data from that particular table.
I want this solution to be as simple as possible. No triggers and no procedures.
Some one please help urgently

Shobana,
Try using something like this.
select * from clob_test
where to_char(clob_col) like 'key%'
It depends on the datatype you are inserting
into that column.
I actually don't what CLOB datatype is
since you are comparing with a char datatype
this should work.
AO
<BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by Shobana ([email protected]):
Hi,
I have a CLOB datatype column in a table and I want to select few rows from that table by comparing that column with some static value as mentioned below. How can I do that?
create table clob_test( clob_col clob );
insert into clob_test values('keys');
insert into clob_test values('key board');
insert into clob_test values('monitor');
commit;
I want something like :-
select * from clob_test where clob_col like 'key%' to get 2 rows. This doesn't work. Gives an error as 'Inconsistent datatypes'
Casting also doesn't work.
This doesn't work. Is there any other way for this problem (other than DBMS_LOB package)?
Would be great if any of you can help me out.
Thanks in advance<HR></BLOCKQUOTE>
null

CLOB Datatype with JDBC Adapter

Hi,
we try to fill a Clob Datatype to JDBC Database.
We try 2 ways with the JDBC Adapter:
action="SQL_DML" with an SQL Statment and $placeholders$
But how can i say the key element that it is a CLOB type?
He used this a VARCHAR and there a not more than 4k Chars allowed.
second way is action="EXECUTE" to call a Stored Procedure, but there we got the error that CLOB type is an Unsupported feature.
Any Idea?
Regards,
Robin
Message was edited by: Robin Schroeder

Ok i will check this...
But i'm right when i say that the only way to fill CLOB Type is to use a Stored Procedure ?
or is there any possibility to do this with action="SQL_DML" ?
Regards,
Robin

Problem in execution of a function having clob datatype

[http://www.orafaq.com/forum/t/128331/98870/]
Hi,
I had a Problem in executing a function having clob datatype.
Here below is my function.
create or replace type split_obj as object
    occurence_id number(10,0),
    splitvalue varchar2(1000)
create or replace type split_rec as table of split_obj;
create or replace FUNCTION Split_new1(
                                       p_string IN clob,
                                       p_delimiter IN VARCHAR2
                                     ) return split_rec pipelined is
    v_length NUMBER := dbms_lob.getlength(p_string);
      v_start NUMBER := 1;
     v_index NUMBER;
      V_temp NUMBER(10,0):=0;
   begin
WHILE(v_start <= v_length)
    LOOP
      v_index := dbms_lob.INSTR(p_string, p_delimiter, v_start);
       IF v_index = 0 THEN
         V_temp:=V_temp+1;
         PIPE ROW(split_obj(v_temp,dbms_lob.SUBSTR(p_string, v_length,v_start)));
         v_start := v_length + 1;
       ELSE
         v_temp:=v_temp+1;
         PIPE ROW(split_obj(v_temp,dbms_lob.SUBSTR(p_string, v_index - v_start,v_start)));
         v_start := v_index + 1;
       END IF;
     END LOOP;
    return;
   end Split_new1;Here attached link contains the procedure trying to execute the function with huge string more than 400kb.
Could you pls let me know how to do the same in sqlplus and toad.
Thanks in advance.
Edited by: user512743 on Nov 27, 2008 4:31 AM

BluShadow wrote:
The problem is that in your execution of this you are trying to assign a value to the clob variable using
v_clob := '<string>'
where the string is greater than allowed in PL/SQL.
Whilst the CLOB itself can hold more data, the string is actually the equivalent of a VARCHAR2 so cannot exceed VARCHAR2 limits.
You should use the DBMS_LOB package to append data to your CLOB in chunks of no more than 32767 characters at a time.??? PL/SQL provides full CLOB support. There is no need to use DBMS_LOB (although you could). OP's function has logic errors. Anyway:
SQL> create or replace type split_obj as object
2    (
3      occurence_id number(10,0),
4      splitvalue varchar2(1000)
5    );
6 /
Type created.
SQL> create or replace type split_rec as table of split_obj;
2 /
Type created.
SQL> create or replace
2    FUNCTION Split_new1(
3                        p_string IN clob,
4                        p_delimiter IN VARCHAR2
5                       )
6      return split_rec pipelined
7      is
8          v_length NUMBER := length(p_string);
9          v_start NUMBER := 1;
10          v_end    NUMBER;
11          V_id     NUMBER :=0;
12          v_clob   CLOB   := p_string || p_delimiter;
13      begin
14          while(v_start <= v_length) loop
15            v_end := instr(v_clob, p_delimiter, v_start);
16            v_id := v_id + 1;
17            pipe row(split_obj(v_id,substr(p_string,v_start,v_end - v_start)));
18            v_start := v_end + length(p_delimiter);
19          end loop;
20          return;
21 end Split_new1;
22 /
Function created.
SQL> create table test_table(x clob)
2 /
Table created.
SQL> declare
2      c clob;
3 begin
4      for i in 1..26 loop
5        c := c || lpad(chr(ascii('a') + i - 1),1000,chr(ascii('a') + i - 1)) || ',';
6      end loop;
7      for i in 1..26 loop
8        c := c || lpad(chr(ascii('A') + i - 1),1000,chr(ascii('A') + i - 1)) || ',';
9      end loop;
10      for i in 1..26 loop
11        c := c || lpad(chr(ascii('a') + i - 1),1000,chr(ascii('a') + i - 1)) || ',';
12      end loop;
13      for i in 1..26 loop
14        if i > 1 then c := c || ','; end if;
15        c := c || lpad(chr(ascii('A') + i - 1),1000,chr(ascii('A') + i - 1));
16      end loop;
17      insert into test_table
18        values(c);
19 end;
20 /
PL/SQL procedure successfully completed.
SQL> select length(x)
2    from test_table
3 /
LENGTH(X)
    104103
SQL> select t.occurence_id,
2          length(splitvalue) len,
3          substr(splitvalue,1,20) first_20
4    from test_table,
5          table(Split_new1(x,',')) t
6 /
OCCURENCE_ID        LEN FIRST_20
           1       1000 aaaaaaaaaaaaaaaaaaaa
           2       1000 bbbbbbbbbbbbbbbbbbbb
           3       1000 cccccccccccccccccccc
           4       1000 dddddddddddddddddddd
           5       1000 eeeeeeeeeeeeeeeeeeee
           6       1000 ffffffffffffffffffff
           7       1000 gggggggggggggggggggg
           8       1000 hhhhhhhhhhhhhhhhhhhh
           9       1000 iiiiiiiiiiiiiiiiiiii
          10       1000 jjjjjjjjjjjjjjjjjjjj
          11       1000 kkkkkkkkkkkkkkkkkkkk
OCCURENCE_ID        LEN FIRST_20
          12       1000 llllllllllllllllllll
          13       1000 mmmmmmmmmmmmmmmmmmmm
          14       1000 nnnnnnnnnnnnnnnnnnnn
          15       1000 oooooooooooooooooooo
          16       1000 pppppppppppppppppppp
          17       1000 qqqqqqqqqqqqqqqqqqqq
          18       1000 rrrrrrrrrrrrrrrrrrrr
          19       1000 ssssssssssssssssssss
          20       1000 tttttttttttttttttttt
          21       1000 uuuuuuuuuuuuuuuuuuuu
          22       1000 vvvvvvvvvvvvvvvvvvvv
OCCURENCE_ID        LEN FIRST_20
          23       1000 wwwwwwwwwwwwwwwwwwww
          24       1000 xxxxxxxxxxxxxxxxxxxx
          25       1000 yyyyyyyyyyyyyyyyyyyy
          26       1000 zzzzzzzzzzzzzzzzzzzz
          27       1000 AAAAAAAAAAAAAAAAAAAA
          28       1000 BBBBBBBBBBBBBBBBBBBB
          29       1000 CCCCCCCCCCCCCCCCCCCC
          30       1000 DDDDDDDDDDDDDDDDDDDD
          31       1000 EEEEEEEEEEEEEEEEEEEE
          32       1000 FFFFFFFFFFFFFFFFFFFF
          33       1000 GGGGGGGGGGGGGGGGGGGG
OCCURENCE_ID        LEN FIRST_20
          34       1000 HHHHHHHHHHHHHHHHHHHH
          35       1000 IIIIIIIIIIIIIIIIIIII
          36       1000 JJJJJJJJJJJJJJJJJJJJ
          37       1000 KKKKKKKKKKKKKKKKKKKK
          38       1000 LLLLLLLLLLLLLLLLLLLL
          39       1000 MMMMMMMMMMMMMMMMMMMM
          40       1000 NNNNNNNNNNNNNNNNNNNN
          41       1000 OOOOOOOOOOOOOOOOOOOO
          42       1000 PPPPPPPPPPPPPPPPPPPP
          43       1000 QQQQQQQQQQQQQQQQQQQQ
          44       1000 RRRRRRRRRRRRRRRRRRRR
OCCURENCE_ID        LEN FIRST_20
          45       1000 SSSSSSSSSSSSSSSSSSSS
          46       1000 TTTTTTTTTTTTTTTTTTTT
          47       1000 UUUUUUUUUUUUUUUUUUUU
          48       1000 VVVVVVVVVVVVVVVVVVVV
          49       1000 WWWWWWWWWWWWWWWWWWWW
          50       1000 XXXXXXXXXXXXXXXXXXXX
          51       1000 YYYYYYYYYYYYYYYYYYYY
          52       1000 ZZZZZZZZZZZZZZZZZZZZ
          53       1000 aaaaaaaaaaaaaaaaaaaa
          54       1000 bbbbbbbbbbbbbbbbbbbb
          55       1000 cccccccccccccccccccc
OCCURENCE_ID        LEN FIRST_20
          56       1000 dddddddddddddddddddd
          57       1000 eeeeeeeeeeeeeeeeeeee
          58       1000 ffffffffffffffffffff
          59       1000 gggggggggggggggggggg
          60       1000 hhhhhhhhhhhhhhhhhhhh
          61       1000 iiiiiiiiiiiiiiiiiiii
          62       1000 jjjjjjjjjjjjjjjjjjjj
          63       1000 kkkkkkkkkkkkkkkkkkkk
          64       1000 llllllllllllllllllll
          65       1000 mmmmmmmmmmmmmmmmmmmm
          66       1000 nnnnnnnnnnnnnnnnnnnn
OCCURENCE_ID        LEN FIRST_20
          67       1000 oooooooooooooooooooo
          68       1000 pppppppppppppppppppp
          69       1000 qqqqqqqqqqqqqqqqqqqq
          70       1000 rrrrrrrrrrrrrrrrrrrr
          71       1000 ssssssssssssssssssss
          72       1000 tttttttttttttttttttt
          73       1000 uuuuuuuuuuuuuuuuuuuu
          74       1000 vvvvvvvvvvvvvvvvvvvv
          75       1000 wwwwwwwwwwwwwwwwwwww
          76       1000 xxxxxxxxxxxxxxxxxxxx
          77       1000 yyyyyyyyyyyyyyyyyyyy
OCCURENCE_ID        LEN FIRST_20
          78       1000 zzzzzzzzzzzzzzzzzzzz
          79       1000 AAAAAAAAAAAAAAAAAAAA
          80       1000 BBBBBBBBBBBBBBBBBBBB
          81       1000 CCCCCCCCCCCCCCCCCCCC
          82       1000 DDDDDDDDDDDDDDDDDDDD
          83       1000 EEEEEEEEEEEEEEEEEEEE
          84       1000 FFFFFFFFFFFFFFFFFFFF
          85       1000 GGGGGGGGGGGGGGGGGGGG
          86       1000 HHHHHHHHHHHHHHHHHHHH
          87       1000 IIIIIIIIIIIIIIIIIIII
          88       1000 JJJJJJJJJJJJJJJJJJJJ
OCCURENCE_ID        LEN FIRST_20
          89       1000 KKKKKKKKKKKKKKKKKKKK
          90       1000 LLLLLLLLLLLLLLLLLLLL
          91       1000 MMMMMMMMMMMMMMMMMMMM
          92       1000 NNNNNNNNNNNNNNNNNNNN
          93       1000 OOOOOOOOOOOOOOOOOOOO
          94       1000 PPPPPPPPPPPPPPPPPPPP
          95       1000 QQQQQQQQQQQQQQQQQQQQ
          96       1000 RRRRRRRRRRRRRRRRRRRR
          97       1000 SSSSSSSSSSSSSSSSSSSS
          98       1000 TTTTTTTTTTTTTTTTTTTT
          99       1000 UUUUUUUUUUUUUUUUUUUU
OCCURENCE_ID        LEN FIRST_20
         100       1000 VVVVVVVVVVVVVVVVVVVV
         101       1000 WWWWWWWWWWWWWWWWWWWW
         102       1000 XXXXXXXXXXXXXXXXXXXX
         103       1000 YYYYYYYYYYYYYYYYYYYY
         104       1000 ZZZZZZZZZZZZZZZZZZZZ
104 rows selected.
SQL> As you can see, function works OK without DBMS_LOB on CLOB of 104103 bytes.
SY.

How do I concatenate CLOB datatypes ?

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