Regarding CLOB datatype handling in forms6i

hi everybody,
i created a table with two fields 1.sno number datatype
2.pic BLOB datatype.
i created a datablock based on the above table.At the same time i placed one button for file open dialog box and i am selecting jpg files and placing that into image item.
what my doubt is if the table contains no data for the pic column, then i have to display the display image which shows the "NO PICTURE IS AVAILABLE".
So for that i have to check when execute_query i want to check whether the pic column contains the data or not,
HOW CAN I DO THAT..
PLZ DO HELP ME IN THIS REGARD
THANKS IN ADVANCE.
BHASKAR

Similar Messages

Regarding CLOB datatype

Hi,
I have two databases with sids' R2SRVR5.WORLD and R2SRVR3.WORLD
Now I have executed the follwoing in r2srvr5 database.
create table kou_test_1
roll integer,
clob_data clob
begin
insert into kou_test_1(roll,clob_data) values (2,empty_clob());
insert into kou_test_1(roll,clob_data) values (3,empty_clob());
commit;
end;
declare
v_clob clob := 'dfhgfjudhgjfhjdhgdhjghdjrjgjgjhfhjjgfyugfygfjgfjgfjgjygjyfgwfg
gfjygfjygfjuyuiryugyubgryuwbgrjyubgrjgrjywgerjgrgw
eukwgfuweyjyegfjgfjhrjujuhwruihri';
begin
update kou_test_1 set clob_data=v_clob where roll=3;
commit;
end;
Now I have created a table in r2srvr3 database.
create table kou_test_2
roll integer,
clob_data clob
and also created a database link from r2srvr3 to r2srvr5.
now when I am executing the following code it gives the error "ORA-22992: cannot use LOB locators selected from remote tables
ORA-06512: at line 2"
begin
insert into kou_test_2(roll,clob_data)
select roll,decode(roll,3,clob_data,empty_clob())
from [email protected];
commit;
end;
Now can any body provide me any solution of it except two separate inserts like
begin
insert into kou_test_2(roll,clob_data)
select roll,clob_data
from [email protected]
where roll=3;
commit;
end;
insert into kou_test_2(roll,clob_data)
select roll,null
from [email protected]
where roll<>3;
commit;
end;
Waiting for reply,
Regards,
Koushik

Hi,
I have two databases with sids' R2SRVR5.WORLD and R2SRVR3.WORLD
Now I have executed the follwoing in r2srvr5 database.
create table kou_test_1
roll integer,
clob_data clob
begin
insert into kou_test_1(roll,clob_data) values (2,empty_clob());
insert into kou_test_1(roll,clob_data) values (3,empty_clob());
commit;
end;
declare
v_clob clob := 'dfhgfjudhgjfhjdhgdhjghdjrjgjgjhfhjjgfyugfygfjgfjgfjgjygjyfgwfg
gfjygfjygfjuyuiryugyubgryuwbgrjyubgrjgrjywgerjgrgw
eukwgfuweyjyegfjgfjhrjujuhwruihri';
begin
update kou_test_1 set clob_data=v_clob where roll=3;
commit;
end;
Now I have created a table in r2srvr3 database.
create table kou_test_2
roll integer,
clob_data clob
and also created a database link from r2srvr3 to r2srvr5.
now when I am executing the following code it gives the error "ORA-22992: cannot use LOB locators selected from remote tables
ORA-06512: at line 2"
begin
insert into kou_test_2(roll,clob_data)
select roll,decode(roll,3,clob_data,empty_clob())
from [email protected];
commit;
end;
Now can any body provide me any solution of it except two separate inserts like
begin
insert into kou_test_2(roll,clob_data)
select roll,clob_data
from [email protected]
where roll=3;
commit;
end;
insert into kou_test_2(roll,clob_data)
select roll,null
from [email protected]
where roll<>3;
commit;
end;
Waiting for reply,
Regards,
Koushik

CLOB datatype question

Hi,
I have a question regarding CLOB datatypes.
The scenario is as follows:
In our existing oracle 8i database, we have a tables say "inquiry" and another table "inq_details". The details table has a LONG field where we create a new record every time details for a specific inquiry is logged. The length of details can be any where from few characters to the field length.
We are planning to move the DB to oracle 9i and I heard it is better to move from LONG to CLOB datatype.
The question is If we log a new record (as it is today) for every detail record, should we be concerned with the data field size and retrieval performance?
Am I better of appending the details to the same column instead of creating new record? (Only diff between two diff records is the details section nothing more than that). When we display the record, we always get all the details in the order in which they are logged.
thank you

A quick look in the manual would have shown you that LPAD returns the same datatype as its first argument : LPAD
The string returned is of VARCHAR2 data type if expr1 is a character data type, NVARCHAR2 if expr1 is a national character data type, and a LOB if expr1 is a LOB data type.
So, this works :
SQL> declare
2 r clob;
3 begin
4 r := lpad(to_clob('0'), 32768, '0');
5 end;
6 /
PL/SQL procedure successfully completed

Clob DataType, NULL and ADO

Hello,
First, I'm french so my english isn't very good
I have a problem with Oracle Clob DataType. When I try to put NULL value to
CLOB DataType with ADO, changes aren't not made.
rs.open "SELECT ....", adocn, adOpenKeyset, adLockOptimistic
rs.Fields("ClobField") = Null ' In this case, the Update doesn't work
rs.update
rs.Close
This code works if I try to write a value which is different than Null but
not if is equal to Null. Instead of having Null, I have the old value
(before changes), the update of the field doesn't work.

I experience the same, did you find a solution to your problem?
Kind regards,
Roel de Bruyn

LogMiner puzzle - CLOB datatype

Hello, everybody!
Sorry for the cross-post here and in "Database\SQL and PL/SQL" forum, but the problem I am trying to dig is somewhere between those two areas.
I need a bit of an advice whether the following behavior is wrong an requires SR to be initiated – or I am just missing something.
Setting:
-     Oracle 11.2.0.3 Enterprise Edition 64-bit on Win 2008.
-     Database is running in ARCHIVELOG mode with supplemental logging enabled
- DB_SECUREFILE=PERMITTED (so, by default LOBs will be created as BasicFiles - but I didn't notice any behavior difference comparing to SecureFile implementation)
Test #1. Initial discovery of a problem
1. Setup:
<li> I created a table MISHA_TEST that contains CLOB column
create table misha_test (a number primary key, b_cl CLOB)<li> I run anonymous block that would insert into this table WITHOUT referencing CLOB column
begin
     insert into misha_test (a) values (1);
     commit;
end;2. I looked at generated logs via the LogMiner and found the following entries in V$LOGMNG_CONTENTS:
SQL_REDO
set transaction read write;
insert into "MISHA_TEST"("A","B_CL") values ('1',EMPTY_CLOB());
set transaction read write;
commit;
update "MISHA_TEST" set "B_CL" = NULL where "A" = '1' and ROWID = 'AAAj90AAKAACfqnAAA';
commit;And here I am puzzled: why do we have two operations for a single insert – first write EMPTY_CLOB into B_CL and then update it to NULL? But I didn’t even touch the column B_CL! Seems very strange – why can’t we write NULL to B_CL from the very beginning instead of first creating a pointer and than destroying it.
Key question:
- why NULL value in CLOB column should be handled differently than NULL value in VARCHAR2 column?
Test #2. Quantification
Question:
-     having LOB column in the table seems to cause an overhead of generating more logs. But could it be quantified?
Assumption:
-     My understanding is that CLOBs defined with “storage in row enabled = true” (default) up to ~ 4k of size behave like Varchar2(4000) and only when the size goes above 4k we start using real LOB mechanisms.
Basic test:
1.     Two tables:
<li> With CLOB:
create table misha_test_clob2 (a_nr number primary key, b_tx varchar2(4000), c_dt date, d_cl CLOB)<li>With VARCHAR2:
create table misha_test_clob   (a_nr number primary key, b_tx varchar2(4000), c_dt date, d_cl VARCHAR2(4000))2.     Switch logfile/Insert 1000 rows and populate only A_NR/Switch logfile
insert into misha_test_clob (a_nr)
select level
from dual
connect by level < 10013.     Check sizes of generated logs:
<li>With CLOB – 689,664 bytes
<li>With Varchar2 – 509.440 (<b>or about 26% reduction</b>)
Summary:
<li>the overhead is real. It means that table with VARCHAR2 column is cheaper to maintain, even if you are not using that column. So adding LOB columns to a table "just in case" is a really bad idea.
<li>Having LOB columns in the table that has tons of INSERT operations is expensive.
Just to clarify a real business case - I have a table with some number of attributes, one attribute has CLOB datatype. Frequency of inserts in this table is pretty high, frequency of using CLOB column is pretty low (NOT NULL ~0.1%). But because of that CLOB column I generate a lot more LOG data than I need (about 30% extra). Seems like a real waste of time! For now I requested development team to split the table into two, but that's still a bandage.
So, does anybody care? Comments/suggestions are very welcome!
Thanks a lot!
Michael Rosenblum

Hello, everybody!
Sorry for the cross-post here and in "Database\SQL and PL/SQL" forum, but the problem I am trying to dig is somewhere between those two areas.
I need a bit of an advice whether the following behavior is wrong an requires SR to be initiated – or I am just missing something.
Setting:
-     Oracle 11.2.0.3 Enterprise Edition 64-bit on Win 2008.
-     Database is running in ARCHIVELOG mode with supplemental logging enabled
- DB_SECUREFILE=PERMITTED (so, by default LOBs will be created as BasicFiles - but I didn't notice any behavior difference comparing to SecureFile implementation)
Test #1. Initial discovery of a problem
1. Setup:
<li> I created a table MISHA_TEST that contains CLOB column
create table misha_test (a number primary key, b_cl CLOB)<li> I run anonymous block that would insert into this table WITHOUT referencing CLOB column
begin
     insert into misha_test (a) values (1);
     commit;
end;2. I looked at generated logs via the LogMiner and found the following entries in V$LOGMNG_CONTENTS:
SQL_REDO
set transaction read write;
insert into "MISHA_TEST"("A","B_CL") values ('1',EMPTY_CLOB());
set transaction read write;
commit;
update "MISHA_TEST" set "B_CL" = NULL where "A" = '1' and ROWID = 'AAAj90AAKAACfqnAAA';
commit;And here I am puzzled: why do we have two operations for a single insert – first write EMPTY_CLOB into B_CL and then update it to NULL? But I didn’t even touch the column B_CL! Seems very strange – why can’t we write NULL to B_CL from the very beginning instead of first creating a pointer and than destroying it.
Key question:
- why NULL value in CLOB column should be handled differently than NULL value in VARCHAR2 column?
Test #2. Quantification
Question:
-     having LOB column in the table seems to cause an overhead of generating more logs. But could it be quantified?
Assumption:
-     My understanding is that CLOBs defined with “storage in row enabled = true” (default) up to ~ 4k of size behave like Varchar2(4000) and only when the size goes above 4k we start using real LOB mechanisms.
Basic test:
1.     Two tables:
<li> With CLOB:
create table misha_test_clob2 (a_nr number primary key, b_tx varchar2(4000), c_dt date, d_cl CLOB)<li>With VARCHAR2:
create table misha_test_clob   (a_nr number primary key, b_tx varchar2(4000), c_dt date, d_cl VARCHAR2(4000))2.     Switch logfile/Insert 1000 rows and populate only A_NR/Switch logfile
insert into misha_test_clob (a_nr)
select level
from dual
connect by level < 10013.     Check sizes of generated logs:
<li>With CLOB – 689,664 bytes
<li>With Varchar2 – 509.440 (<b>or about 26% reduction</b>)
Summary:
<li>the overhead is real. It means that table with VARCHAR2 column is cheaper to maintain, even if you are not using that column. So adding LOB columns to a table "just in case" is a really bad idea.
<li>Having LOB columns in the table that has tons of INSERT operations is expensive.
Just to clarify a real business case - I have a table with some number of attributes, one attribute has CLOB datatype. Frequency of inserts in this table is pretty high, frequency of using CLOB column is pretty low (NOT NULL ~0.1%). But because of that CLOB column I generate a lot more LOG data than I need (about 30% extra). Seems like a real waste of time! For now I requested development team to split the table into two, but that's still a bandage.
So, does anybody care? Comments/suggestions are very welcome!
Thanks a lot!
Michael Rosenblum

QUERYING CLOB DATATYPE

Hello Everyone,
Before I go to my question let me give you the context. I wanted to upload the description of a set of products with their IDs into my database. Hence I created a table 'demo' with two columns of INT and CLOB datatypes using the following script. *create table demo ( id int primary key, theclob Clob );*
Then I create a directory using the following script, *Create Or Replace Directory MY_FILES as 'C:\path of the folder.......\';*
In the above mentioned directory I create one .txt file for each product with the description of the product. Using the below script I created a procedure to load the contents of the .txt files into my 'demo' table.
*CREATE OR REPLACE*
*PROCEDURE LOAD_A_FILE( P_ID IN NUMBER, P_FILENAME IN VARCHAR2 ) AS*
*L_CLOB CLOB;*
*L_BFILE BFILE;*
*BEGIN*
*INSERT INTO DEMO VALUES ( P_ID, EMPTY_CLOB() )*
*RETURNING THECLOB INTO L_CLOB;*
*L_BFILE := BFILENAME( 'MY_FILES', P_FILENAME );*
*DBMS_LOB.FILEOPEN( L_BFILE );*
*DBMS_LOB.LOADFROMFILE( L_CLOB, L_BFILE,*
*DBMS_LOB.GETLENGTH( L_BFILE ) );*
*DBMS_LOB.FILECLOSE( L_BFILE );*
*END;*
After which I called the procedure using, *exec load_a_file(1, 'filename.txt' );*
When I queried the table like, select * from demo; I am getting the following output..... which is all fine.
ID THECLOB
1 "product x is an excellent way to improve your production process and enhance your turnaround time....."
_*QUESTION*_
When I did the exact same thing in my friend's machine and query the demo table, I get garbage value in the 'theclob' column (as shown below). The only difference is that mine is an enterprise edition of Oracle 11.2.0.1 and my friends is an Express edition of Oracle 11.2.0.2. Does this has anything to do with the problem?
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To make sure that the .txt files are accessible in the directory I executed the following script, Host Echo Hello World > C:\...path...\1.Txt
After which I found the contents of the file changed to "Hello World". Later I loaded the .txt file with "Hello World" and queried the table. Still I am getting some garbage value. However since the string "Hello World" is much smaller than the previous contents, the garbage size is also smaller for ID 1. I don't get any errors, but you can see the output as follows.
1      䠀攀氀氀漀圀漀爀氀搀 ഀ਀
2     ≁否吠潦晥牳摶慮捥搠睩牥汥獳⁦潲浳慰慢楬楴礠睩瑨⁃潭整⁅娠䍯浥琬⁔牡捫敲湤⁃潭整⁍潢楬攠坯牫敲ਊ䍯浥琠䕚㨠周攠浯獴⁲潢畳琬潳琠敦晥捴楶攠睥戠扡獥搠䵒䴠慰灬楣慴楯渠楮⁴桥⁩湤畳瑲礮⁃慰慢楬楴楥猠楮捬畤攠䝐匠汯捡瑩潮⁴牡捫楮本⁷楲敬敳猠瑩浥汯捫Ⱐ来漭晥湣楮朠睩瑨汥牴猬⁳灥敤湤⁳瑯瀠瑩浥汥牴猬湤渭摥浡湤爠獣桥摵汥搠牥灯牴楮朮ਊ䍯浥琠呲慣步爺⁁⁰潷敲晵氠捬楥湴ⵢ慳敤⁰污瑦潲洠瑨慴晦敲猠慬氠瑨攠晥慴畲敳映䍯浥琠䕚⁰汵猺⁁摶慮捥搠摡瑡潬汥捴楯渠捡灡扩汩瑩敳㨠扡牣潤攠獣慮湩湧Ⱐ灡湩挠慬敲琬⁷潲欠潲摥爠浡湡来浥湴Ⱐ睩牥汥獳⁦潲浳湤⁳異敲癩獯爠瑩浥⁥湴特⸊੃潭整⁍潢楬攠坯牫敲㨠周攠浯獴⁲潢畳琠灡捫慧攮⁐牯癩摥猠扵獩湥獳敳⁷楴栠愠捯浰汥瑥汹⁷楲敬敳猠潰敲慴楯湡氠浡湡来浥湴⁳祳瑥洮⁉湣汵摥猠慬氠潦⁃潭整⁔牡捫敲❳⁦敡瑵牥猠灬畳㨠䍡汥湤慲猬畴潭慴敤畳瑯浥爠捯浭畮楣慴楯湳Ⱐ睯牫牤敲⽩湶潩捥⁵灤慴楮朠晲潭⁴桥⁦楥汤Ⱐ睯牫牤敲⁳敱略湣楮本⁥硣敳獩癥⁳瑯瀠瑩浥汥牴猬⁷楲敬敳猠景牭猬⁴畲渭批⵴畲渠癯楣攠湡癩条瑩潮Ⱐ慮搠浯牥⸊ੁ摶慮捥搠坩牥汥獳⁆潲浳㨠呵牮湹⁰慰敲⁦潲洠楮瑯⁷楲敬敳猠捬潮攠潦⁴桥⁳慭攠楮景牭慴楯渠ⴠ湯慴瑥爠桯眠捯浰汩捡瑥搮⁓慶攠瑩浥礠瑲慮獦敲物湧⁩湦潲浡瑩潮慣欠瑯⁴桥晦楣攠睩瑨⁷楲敬敳猠獰敥搮⁓慶攠灡灥爠慮搠敬業楮慴攠摵慬•ഊ
3     ≁䥒呉䵅⁍慮慧敲⁦牯洠䅔♔⁰牯癩摥猠愠浯扩汥灰汩捡瑩潮猠摥獩杮敤⁴漠瑲慣欠扩汬慢汥⁨潵牳⸠⁔桥⁁㑐⁳潬畴楯湳畴潭慴楣慬汹潧⁷楲敬敳猠敭慩氬慬汳Ⱐ慮搠扩汬慢汥⁥癥湴猬獳潣楡瑥猠瑨敭⁷楴栠捬楥湴爠灲潪散琠捯摥猠慮搠摩牥捴猠扩汬慢汥⁲散潲摳⁴漠扩汬楮朠獹獴敭献†周攠呩浥乯瑥⁳潬畴楯湳⁰牯癩摥⁳汩浭敤潷渠數灥物敮捥Ⱐ慬汯睩湧⁦潲牥慴楯渠潦慮畡氠扩汬慢汥⁥癥湴献†周敲攠慲攠瑷漠癥牳楯渠潦⁁㑐湤⁔業敎潴攮ਊ䭥礠䙥慴畲敳㨊⨠䥮捬畤攠捡灴畲攠慤⵨潣楬污扬攠敶敮瑳ਪ⁃慰瑵牥潢楬攠灨潮攠捡汬湤⁥浡楬†慳楬污扬攠敶敮瑳Ⱐਪ⁁扩汩瑹⁴漠慳獩杮楬污扬攠敶敮琠瑯汩敮琠慮搠灲潪散琊⨠䅢楬楴礠瑯⁳敡牣栠慮搠獣牯汬⁴桲潵杨楬污扬攠敶敮瑳Ⱐ潰瑩潮⁴漠楮瑥杲慴攠睩瑨楬汩湧⁳祳瑥浳 ⨠偯瑥湴楡氠扥湥晩瑳⁩湣汵摥⁩湣牥慳敤⁰牯摵捴楶楴礠慮搠牥摵捥搠慤浩湩獴牡瑩癥癥牨敡搠湤⁩湣牥慳敤⁲敶敮略略⁴漠浯牥捣畲慴攠捡灴畲楮朠潦楬污扬攠敶敮瑳•ഊ
4     ≁灲楶慐慹⁁乄⁁灲楶慐慹⁐牯晥獳楯湡氠晲潭⁁否吠瑵牮⁹潵爠浯扩汥敶楣攠楮瑯⁰潲瑡扬攠捲敤楴慲搠瑥牭楮慬⸠坩瑨潭灡瑩扬攠䅔♔⁳浡牴灨潮攬⁁灲楶慐慹爠䅰物癡偡礠偲潦敳獩潮慬⁳潦瑷慲攬湤敲捨慮琠慣捯畮琬⁹潵爠浯扩汥⁷潲武潲捥慮⁰牯捥獳牥摩琠潲敢楴慲搠灡祭敮瑳⁦牯洠瑨攠晩敬搮ਊ䭥礠䙥慴畲敳㨠 ⨠卭慲瑰桯湥ⵢ慳敤⁳潬畴楯渠⁴漠灲潣敳猠捲敤楴慲搠灡祭敮瑳 ⨠䙵汬ⵦ敡瑵牥搠灯楮琭潦⵳慬攠獯汵瑩潮⁳異灯牴楮朠慬氠浡橯爠瑲慮獡捴楯渠瑹灥ਠ⨠卵灰潲瑳牥摩琠慮搠摥扩琠瑲慮獡捴楯湳 ਊ∍
Edited by: Arunkumar Gunasekaran on Jan 3, 2013 11:38 AM

>
To make sure that the .txt files are accessible in the directory I executed the following script, Host Echo Hello World > C:\...path...\1.Txt
After which I found the contents of the file changed to "Hello World". Later I loaded the .txt file with "Hello World" and queried the table. Still I am getting some garbage value. However since the string "Hello World" is much smaller than the previous contents, the garbage size is also smaller for ID 1. I don't get any errors, but you can see the output as follows.
>
The most common problem I have seen using BFILEs is the character set; BFILEs do NOT handle character set conversion.
That is the main reason I don't recommend using BFILEs for loading data like this. Either SQL*Loader or external tables can do the job and they both handle character set conversions properly.
See the LOADFROMFILE Procedure of DBMS_LOB package in the PL/SQL Language doc
http://docs.oracle.com/cd/B28359_01/appdev.111/b28419/d_lob.htm#i998778
>
Note:
The input BFILE must have been opened prior to using this procedure. No character set conversions are performed implicitly when binary BFILE data is loaded into a CLOB. The BFILE data must already be in the same character set as the CLOB in the database. No error checking is performed to verify this.
Note:
If the character set is varying width, UTF-8 for example, the LOB value is stored in the fixed-width UCS2 format. Therefore, if you are using DBMS_LOB.LOADFROMFILE, the data in the BFILE should be in the UCS2 character set instead of the UTF-8 character set. However, you should use sql*loader instead of LOADFROMFILE to load data into a CLOB or NCLOB because sql*loader will provide the necessary character set conversions.
>
I suggest you use an external table definition to do this load. You can do an ALTER to change the file name for each load.
See External Tables Concepts in the Utilities doc for the basics
http://docs.oracle.com/cd/B28359_01/server.111/b28319/et_concepts.htm
See Altering External Tables in the DBA doc for detailed information
http://docs.oracle.com/cd/B28359_01/server.111/b28310/tables013.htm
>
DEFAULT DIRECTORY
Changes the default directory specification
ALTER TABLE admin_ext_employees
DEFAULT DIRECTORY admin_dat2_dir;
LOCATION
Allows data sources to be changed without dropping and re-creating the external table metadata
ALTER TABLE admin_ext_employees
LOCATION ('empxt3.txt',
'empxt4.txt');
>
You can also load in parallel if you have licensed that option.

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();
}

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

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

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:
- I would like to have a one-script solution for this problem (meaning execute one script on one machine)
- I am not able to make an SSH connection from the target DB to the local one (although the otherway it works fine) which means I cannot copy the dump file from target server to local one.
- with export/import I need to have an SSH connection on the target DB in order to issue the exp command...
Therefore, I am looking for a solution (or a workaround) which will work over a DBLINK.
Regards,
Pawel.

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

Using CLOB datatypes in WHERE clause

Hi All,
I have a table with two columns as CLOB datatype. I'm using Oracle 8i Enterprise Edition. I can do a query, insert, update and even delete the data in the CLOB field using Oracle's SQL Plus.
What I want is to do a search on those fields.. that is include that field in a WHERE clause. I'm using this datatype to store large number of data.
I'd like to see this query working...
SELECT * FROM MyTable WHERE CLOBFLD LIKE 'Something...';
Now this query doesn't work. It returns: 'Inconsistent datatype' near the word CLOBFLD.
Please Help me out.
Regards,
Gopi
null

I presume you want to query based on the contents of the CLOB, right ? If that is true, then you have to create a text index, using Oracle Context and then use "Contains" in the where clause to query. Hope this helps.

Can we strore .CSV file into CLOB datatype

hi
can we strore .CSV file into CLOB datatype
its giving me error ot hexa coonversion?
can anyone provide sample code...
when i m sending mail from oracle database when i send as blob object then nope but when i send attachment stored in table with clob column it gives me hex to raw conversion error
folllowing is my code--
CREATE OR REPLACE PROCEDURE com_maildata_prc1( pi_sender IN com_batch_contact_dtl.strreceivername%TYPE,
pi_recipients IN com_batch_contact_dtl.stremailaddr%TYPE,
pi_subject IN VARCHAR2 ,
pi_text IN VARCHAR2 ,
pi_filename IN VARCHAR2 ,
pi_blob IN cLOB
IS
conn utl_smtp.connection;
i NUMBER;
len NUMBER;
BEGIN
('com_send_email_prc',Vn_Process_Id);
conn := demo_mail.begin_mail( sender => pi_sender,
recipients => pi_recipients,
subject => pi_subject,
mime_type => demo_mail.MULTIPART_MIME_TYPE
demo_mail.begin_attachment(conn => conn,
mime_type => 'application/csv',
inline => TRUE,
filename => pi_filename,
transfer_enc => 'base64'
-- split the Base64 encoded attachment into multiple lines
i := 1;
len := DBMS_LOB.getLength(pi_blob);
WHILE (i < len) LOOP
IF(i + demo_mail.MAX_BASE64_LINE_WIDTH < len)THEN
UTL_SMTP.Write_raw_Data (conn
, UTL_ENCODE.Base64_Encode(
DBMS_LOB.Substr(pi_blob, demo_mail.MAX_BASE64_LINE_WIDTH, i)));
ELSE
UTL_SMTP.Write_raw_Data (conn
, UTL_ENCODE.Base64_Encode(
DBMS_LOB.Substr(pi_blob, (len - i)+1, i)));
END IF;
UTL_SMTP.Write_Data(conn, UTL_TCP.CRLF);
i := i + demo_mail.MAX_BASE64_LINE_WIDTH;
END LOOP;
demo_mail.end_attachment(conn => conn);
demo_mail.attach_text(
conn => conn,
data => pi_text,
mime_type => 'text/csv');
demo_mail.end_mail( conn => conn );
END;
Thanx in advance...
Message was edited by:
user549162
Message was edited by:
user549162

Hi
Ignore "SQL*Loader-292: ROWS parameter ignored when an XML, LOB or VARRAY column is loaded" error
after importing your csv file just change length CHAR(100000).
ex: your column col1 CHAR(1000) to change CHAR(100000).
and deploy your mapping and execute
Regards,
Venkat

Error in CLOB datatype for transfering data from Excel to Oracle database

Am using excel sheet as source and Oracle as target Database.
For all tables the operations works smoothly except for tables containing CLOB datatype.
Initially i have used SQL Developer to transfer some data into excell sheets, now i want to transfer those file's data into another Oracle Database.
What other options do i have?
Is excel not the right tool to transfer CLOB datatypes?

well,
I couldn't suggest an excel to do it...
You can go from Oracle to Oracle with the PL/SQL IKM. It works fine.
Does it help you?

Regarding CLOB datatype handling in forms6i

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