CLOB data issue while select

Hi All,
I have a clob colum below
select dbms_lob.substr(my_columnname,4000,1) from my_table
it gives below error
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at line 1
whats the solution ?
Rgds
s

Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
NLS_CHARACTERSET = 'EE8MSWIN1250'
NLS_NCHAR_CHARACTERSET = 'AL16UTF16'
insert into clob_gtt
select lpad('@',4000,'@') from dual
update clob_gtt
   set clob_column = clob_column || lpad('#',4000,'#')
select dbms_lob.substr(clob_column,10,3996) junction
      ,dbms_lob.getlength(clob_column) len_0
      ,length(dbms_lob.substr(clob_column,3998,1)) len_1
      ,length(dbms_lob.substr(clob_column,3999,1)) len_2
      ,length(dbms_lob.substr(clob_column,4000,1)) len_3
--      ,length(dbms_lob.substr(clob_column,4001,1)) len_4 /* ORA-06502: PL/SQL: numeric or value error: character string buffer too small */
from clob_gtt
JUNCTION     LEN_0   LEN_1   LEN_2   LEN_3
@@@@@#####    8000    3998    3999    4000Regards
Etbin

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select job_Name, target_name, status, start_time, end_time, to_char(substr(output,1,4000)) output
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In an APEX Interactive Report:
select * from test_job_step_history@GCDB
Granted, the output looks aweful right now but I am only looking for a very particular output (failed, denied, ORA-, RMAN-, etc) so the formatting isn't the most important thing to me right now.
If anyone can improve -- and I'm sure you can -- on this I'd love to hear about it.
Thanks,
Rich

Issue while insert and update data to DB tables

Hello all,
i am having an issue while insert the data to DB table.
my scenario is DB1 to DB2. i had a sender channel with select query which fetches data from DB1 and inserts to DB2.
so the select query will fetch the records that were INSERTED to DB1 and records that were UPDATED to DB1 and needs to insert/update to DB2 table.
Now the issue is i am able to insert the records but not able toupdate the records to DB2 table due to primary key issue.
im message mapping
sender message type is as follows:
<src_message1>
----<row>
-------<fieldA>
-------<filedB>
-------<filedC>
Receiver message type as follows:
<trgt_message1>
----<STATEMENT_1>
----<TABLE_NAME>
----<ACTION> INSERT
----<TABLE>
----<ACCESS>
----<field1> primary key
----<field2>
----<field3>
----<field4>
----<KEY>
----<field1>
----<field2>
----<field3>
----<field4>
my query in sender channel is : select filedA, filedB, filedC from test_table where createdate=sysdate or updatedate=sysdate
so it feteches the data from DB1 and inserting to DB2 but not updating the records to DB2 due to primarykey issue.
please suggest how to solve ....will it solve by using UPDATE_INSERT for action?
Best Regards,SARAN

Hi Nagarjuna,
i have done the following changes to target mapping structure;
1. action as UPDATE_INSERT
2. in access tab, i had mapped fieldDate to field4.
3. in Key tab, i assigned the sysdate to field4.
but issue still exist. could you please check my above changes are correct or not. if wrong please provide me the details that needs to be done.
thanks in advance.
i'm providing the error details again:
my query in sender channel is : select filedA, filedB, filedC, FiledDate from TEST_TABLE where fieldDate=sysdate or updatedate=sysdate
it returns 4 records as follows:
fieldA--fieldB-fieldC---fieldDate
1001----EU---- 1----
    2011-11-10
1002----CN---- 0----
     2011-11-10
1003----AP---- 1----
      2008-03-15 (already exist in DB2)
1004----JP---- 1----
    2007-04-12 (already exist in DB2)
the first two records are created today and remaining 2 records are updated the fieldC from 0 to 1 ( in DB1 )
while inserting these 4 records to DB2, we get the following error "java.sql.SQLException: ORA-00001: unique constraint (data.TEST_TABLE_PK) violated" .
Best Regards,SARAN

How to select CLOB data

Hi,
I am using PHP4.4 and Oracle 10g for my research work. I defined 'protein_seq' field as CLOB in a table. I uploaded data into it using sqlloader.
Now, I want to display the value of that field based on user requirements. When i did like this, I am getting 'Object' as value instead of original value.
$s4 = OCIParse($conn, "select * from protein_uniprot where uniprot_id LIKE '$protein%'");
OCIExecute($s4, OCI_DEFAULT);
while (OCIFetch($s4)) {
$proteinseq = OCIResult($s4, "PROTEIN_SEQ");
echo $proteinseq;
Could you please help me how to fetch CLOB data from oracle table using PHP.
Thanks,
Rani.

convert the lob column to varchar2. Use [dbms_lob |http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_lob.htm#BABEEAAH] package to convert
select dbms_lob.SUBSTR(column,2000,1) from table- - - - - - - - - - - - - - - - - - - - -
Kamran Agayev A. (10g OCP)
http://kamranagayev.wordpress.com

CLOB data issue while select

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