SQL & PL/SQL :: Read CLOB Column?
Dec 19, 2012
I have two tables File_Master and File_Detail
File_Master Primary key FILE_ID
File_Detail Primary key FILE_ID,LINE_ID
I have a CLOB column FILE_CONTENT in table File_Master. For every FILE_ID record in File_Master, several hundreds of lines are stored in the CLOB column.
I want to read this CLOB column 'File_Content' and and break every line (1000 Characters)
piecewise to populate columns of File_Detail.
Since there will be thousands of lines to process, what would be the best approach in writing PL/SQL code for better performance?
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Jun 11, 2013
I have a small doubt on CLOB reading and not able to do it in the query because it has very large strings in it.
create table TEST
(
col1 VARCHAR2(100),
col2 VARCHAR2(100),
col3 VARCHAR2(100),
col4 DATE,
col5 CLOB,
col6 BLOB,
[code]....
This data I am inserting from front end into test table via XML but here i just giving insert statement.Now , I have below query to insert the data into different table:
This query is working for col3 ='2' as its small string but for col3 ='1' its not working and giving character string buffer too small.
with indata as
(select 1 sn, (select dbms_lob.substr(col5) from test where col3 = '1') x
from dual
union all
select 2, null x from dual),
t1 as
[code]....
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Apr 26, 2013
I have table like-
CREATE TABLE C2X_TEST(NAME VARCHAR2(100),XML_CLOB CLOB,XML_XML XMLType);
here in XML_CLOB column xml files are stored.
Now i want to update XML_XML column with corresponding XML_CLOB value .
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Jul 3, 2012
i have another problem with clob column , when i try to insert data in it through the stored procedure then it shows an
error- 'ORA-01460: unimplemented or unreasonable conversion requested clob' and this error especially arise when data to e inserted in clob column , have more than 4000 characters.
sql>exec pi_test(1,'sysdate','text of clob column'); ORA-01460: unimplemented or unreasonable conversion requested clob
where is the error.
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Feb 13, 2013
I have a requirement when I need to append and show the contents of a CLOB (rich text) column into the Open office report.
The use case is as below.
User(s) can enter the details into a CLOB column.
This data entered by each user need to be concatenated onto another CLOB column which will hold all the history of changes. Mainly i wanted to perform a concatenation of these two columns.
|
| User Entered | Stored |
| Data Stored in Clob Column 1| Data Stored in Clob Column 2 |
| v_clob_1 | v_clob_target |
-------------------------------------------------------------------------------
|"Text 1" and a image |"Text 1" and a image |
-------------------------------------------------------------------------------
Any method to achieve this case. I had tried the following method to achieve this. But no success.
v_merge clob;
v_clob_target clob;
v_clob_1 clob;
1)
DBMS_LOB.APPEND(v_merge, v_clob_target);
DBMS_LOB.APPEND(v_merge, v_clob_1);
2)
DBMS_LOB.APPEND(v_clob_target, v_clob_1);
3)
v_merge:= v_clob_target || ''|| v_clob_1;
v_clob_target := v_merge;
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Aug 30, 2010
I am encountering an error message while updating a xmltype column using dynamic sql statement. I am using dynamic sql here as the table is not placed in the same schema from where the plsql procedure is invoked. The schema name is passed to the procedure as an argument. I am using below pseudo code for this purpose.
Create procedure myproc(p_schemaname varchar2, p_id number)
is
p_clob clob;
p_str varchar2(2000);
begin
[code]...
This is throwing an error 'missing expression' at the line of 'exeute immediate'.
But it works if I run a static sql update by hard coding the schema name in the statement.
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Feb 21, 2011
How to update a CLOB column in a table, suppose the string is greater than 4000 size.
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Jun 13, 2012
i have a problem when i try to insert a large character string of nearly 1 lac characters (code of html) in a clob column of my test table, then i get an error "ORA-01704: string literal too long" , i didnot understand that why clob column is not storing this data.
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Jul 11, 2012
I had a varchar2 variable which was storing some data and I could use the LENGTH function to get the length of the data. However, If I change it to CLOB. What is the best way to get the length?
v_clob_size:= (DBMS_LOB.getlength(v_clob)) / 1024 / 1024;
DBMS_OUTPUT.put_line('CLOB Size ' || v_clob_size);
another one is
LENGTHB(TO_CHAR(SUBSTR(<clob-column>,1,4000))) But this seems restricted to first 4000 characters only.
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Jun 30, 2010
I have oracle table with a column of datatype CLOB. In the clob column having the manipulation statements (update, insert) as records.
How to execute the statements exists in a clob column as records?
my table structure and one record is
CREATE TABLE ACTN_CFG_T
(
OBJ_ID NUMBER(32) NOT NULL,
ACTN_ID NUMBER(38) NOT NULL,
ACTN_SEQ NUMBER(2) NOT NULL,
RU_DEF CLOB NOT NULL
[code]....
I want to execute the update statement when i call the obj_id. I used the follwing procedure but error.
1 DECLARE
2 V_ABC CLOB;
3 BEGIN
4 SELECT RU_DEF INTO V_ABC FROM ACTN_CFG_T WHERE OBJ_ID = 1625;
5 EXECUTE IMMEDIATE V_ABC;
6 END;
error is...
ORA-06550: line 5, column 20:
PLS-00382: expression is of wrong type
ORA-06550: line 5, column 2:
PL/SQL: Statement ignored
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Mar 17, 2011
I have a CLOB column called XML_DATA that has (not-surprisingly) xml data in it that's housed inside a table called HMS_XML_TRANSFER. It has been giving me a headache because I'm unable at this point to use the xml field as a condition to get its TRANS_SEQUENCE number. The where clause doesn't work.
SELECT TRANS_SEQUENCE, XML_DATA
FROM HMS_XML_TRANSFER
WHERE EXTRACTVALUE(XMLTYPE (XML_DATA), '/INTERFACES/INTERFACE/BODY/IFI0057[ACTIVITY_CODE = "2201-020742"]');
The only test that I have been able to get working is the one below.
SELECT TRANS_SEQUENCE, EXTRACTVALUE(XMLTYPE (XML_DATA), '/INTERFACES/INTERFACE/BODY/IFI0057/ACTIVITY_CODE')
FROM HMS_XML_TRANSFER
WHERE TRANS_SEQUENCE = '8191602';
It will give me the ACTIVITY_CODE element so I know I can pull data from the XML but I can't do the reverse in the first example which is what I need because I don't know the TRANS_SEQUENCE number, I just know the ACTIVITY_CODE.
I have over 202 error messages logged in Teradata SQL from my many and varied attempts to get this to work using every example I could find online.
As an example this has not worked either...
WHERE EXISTNODE(XML_DATA, '/INTERFACES/INTERFACE/BODY/IFI0057[ACTIVITY_CODE = "2201-020742"]') = 1;
So the question... How do I properly form my SQL statement so I can use the XML column's ACTIVITY_CODE element to get the TRANS_SEQUENCE column field? Oh and I'd like to see both columns in the result.
Below is the version of Oracle I'm using, the description of the Table HMS_XML_TRANSFER, and a sample of the XML that comes from XML_DATA. I can't seems to get tabs working.
===============
ORACLE VERSION
===============
SQL*Plus: Release 9.0.1.3.0 - Production on Thu Mar 17 08:18:15 2011
Connected to:Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
=========================
TABLE HMS_XML_TRANSFER
=========================
Name Null? Type
--------------- --------- --------------
TRANS_TYPE NOT NULL VARCHAR2(10)
DATE_IN NOT NULL DATE
DATE_PROCESSED DATE
STATUS VARCHAR2(8)
[code]....
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Apr 9, 2013
I have a query which returns nearly 20k rows, as per the requiremnet we need to append all these rows in specific format and insert into single clob column.in the below procedure test_clob.textt is clob field.
CREATE OR REPLACE PROCEDURE pro_test
v_mas_seq NUMBER (9);
v_gov_total NUMBER (20, 2);
v_emp_total NUMBER (20, 2);
v_text_exp CLOB;
v_pageaccess VARCHAR2 (15);
v_dto NUMBER (7) := 4011486;
v_batchno NUMBER (20) :=
[code]....
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Jun 22, 2012
I have to change the datatype of a column from CLOB to varchar2, without changing the order of the columns. The table has no data.
I could find any other way other than dropping the CLOB columns and then adding new columns with varchar2 datatype. But this changes the order of the columns in the table.
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Mar 28, 2013
I have a table that has column with BLOB datatype. I am trying read only the inputted String from the BLOB datatype column. I have used the below query,
SELECT utl_raw.cast_to_varchar2(column1) FROM TAB1
and it gives the result as
<H2><FONT color=#cc0000><EM><U>test</U></EM></FONT></H2>
However I would like to extract only the string "test" which is inputted. Is there any build-in function in oracle which will satisfy this requirement?
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May 8, 2013
how to convert existing table with varchar column to a clob
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Jan 31, 2012
adding some value in xml type clob column, for ex: xml_tab table has more than 100 rows, below i have created some rows
Quote:create table xml_tab(id number, ex_xml clob);
select * from xml_tab;
1 <CData CI="1111" <Dist> <value desc="25">25 </value> <value desc="30">30 </value> <value desc="35">35 </value> <value desc="40">40 </value> </Dist> <Year IsReadOnly="Y"> <value descr="Old"><1995 </value> <value>1995 </value> <value>1996 </value> <value>1997 </value> <value>1998 </value> <value>1999 </value> <value>2000 </value> <value>2001 </value> <value>2002 </value> <value>2003 </value> <value>2004 </value> <value>2005 </value> <value>2006 </value> <value>2007 </value> <value>2008 </value> <value>2009 </value> <value>2010 </value> </Year> </CData>
[Code]....
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Sep 10, 2012
I'm trying to get size of CLOB column but not getting any output.
SQL> desc TABLE_STEP_INST234
Name Null? Type
----------------------------------------- -------- ----------------------------
NUM_PENDING_PREREQS NOT NULL NUMBER(10)
OBJID NOT NULL VARCHAR2(31)
OUTFLOW_BITS NUMBER(19)
PARAMS CLOB
PARENT2PROC_INST NOT NULL VARCHAR2(31)
ROOT2PROC_INST NOT NULL VARCHAR2(31)
START_TIME DATE
STATUS NOT NULL NUMBER(2)
[code]...
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Oct 26, 2011
I am doing a simple test and need to populate a small table with some data.
My table looks like this:
SQL> desc clob_test
Name Null? Type
----------------------------------------- -------- ----------------------------
ID NUMBER(20)
C1 CLOB
I have a pipe delimited data file ID range 1-50000 and random characters with a length of 100-4000 bytes for the clob field.
My control file looks like this but I am guessing it is wrong:
LOAD DATA
INFILE 'clob_test.dat'
INTO TABLE CLOB_TEST
FIELDS TERMINATED BY '|'
TRAILING NULLCOLS
(
ID INTEGER EXTERNAL NULLIF (ID=BLANKS)
, C1
)
Let me know what I need to do to my .ctl file in order to load this data?
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Feb 25, 2012
I need to create a composite unique index on varchar2, number and CLOB column. I haven't used such index before that have the CLOB column indexing. I found the below link related to CLOB indexing...
[URL]......
Links from where I can get related info. Also I would like to know the impact of such index on performance. I have to store and process around 50 million records in such a way, will it be beneficial to use this index?
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Dec 14, 2012
My ORACLE DB version is:
('Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production');
('PL/SQL Release 11.2.0.2.0 - Production');
('CORE 11.2.0.2.0 Production');
('TNS for Linux: Version 11.2.0.2.0 - Production');
('NLSRTL Version 11.2.0.2.0 - Production');
I have this XML data stored in a CLOB column:
<Activity>
<Changes>
</Changes>
<Inserts>
</Inserts>
<Definition>
[code]....
I need creating an update that will insert another <Activity>SomeGUID</Activity> into the <Spawned> parent.
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Oct 6, 2009
I am having problem in inserting a long file (80000 B) into CLOB cloumn in oracle database 10g.
ERROR at line 23:
ORA-06550: line 23, column 1:
PLS-00172: string literal too long
I am calling the oracle stored procedure through unix shell script as fallows.
#!/bin/ksh
cd /usr/home/dfusr/backup
i=`cat pe_proxy_master_2160.Thu.log | sed "s/'/''/g"`
sqlplus username/password@db 1> temp.log <<!
DECLARE
BEGIN
Write_Text_To_CLOB(1,'$i');
COMMIT;
END;
/
The file pe_proxy_master_2160.Thu.log is about 50000 B.
My Stored Procedure is fallows
CREATE OR REPLACE PROCEDURE Write_Text_To_CLOB (
p_id IN NUMBER
, p_clob IN VARCHAR2
)
IS
[code]....
I also tried with ojdbc5.jar and ojdbc14.jar files in class path.
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Feb 9, 2011
I need to create a materialized view with a clob column based on a varchar2 column of a table.This is because in the mv the clob column data gets appended one after another.
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Jul 15, 2013
I would like to spool a clob column to a flag file, however some of the clob are greater than 32k, and I have to have the same record in a single line in the file. Is there any way to achieve this through spooling?
set heading off
set feedback off
set term off
set long 1000000
set longchunksize 500000
set line 32767
set trimspool on
set pagesize 50000
spool file.txt
@--this is my select statement.
spool off
exit
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Dec 30, 2010
I have a table with two clob columns and need to manually allocate space to the table and to its lob segment. Is the following command correct?
--to allocate extent to the table
alter table emp allocate extent;
--the table has columns named col1 and col2 which are clob
--to allocate extents to the columns
alter table emp modify lob (col1) (allocate extent (size 10m))
/
alter table emp modify lob (col2) (allocate extent (size 10m))
/
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Mar 30, 2012
I have extracted data from table and write into one text via sqlplus utility in shell scripts. i got correct output. i am having two issues on the output file
1) Outfile file size is huge high compare then table segment data.
2) last column having extra space.
The output column is clob datatype. so i have added set long 50000 and set longchunksize 50000 parameter. after adding these only i got above issues. without two options, i am not getting this isssue but lines are wrapped.
#Set the scripts Path
SCRIPTS_PATH="/usr/local/ccms/gpa/svr/scripts"
echo $SCRIPTS_PATH
[Code]....
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Jun 18, 2012
I'm loading data from text file separated by TAB and i got the error below for some lines. Event the column is CLOB data type is there a limitation of the size of a CLOB data type. The error is:
Record 74: Rejected - Error on table _TEMP, column DEST.
Field in data file exceeds maximum length
I'm using SQL Loader and the database is oracle 11g r2 on linux Red hat 5. Here are the line causing the error from my data file and my table description for test:
create table TEMP
(
CODE VARCHAR2(100),
DESC VARCHAR2(500),
RATE FLOAT,
INCREASE VARCHAR2(20),
COUNTRY VARCHAR2(500),
DEST CLOB,
[code]........
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Dec 27, 2010
my question is how to read ocr in oracle rac?
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Jun 2, 2011
how to create script/steps that makes database read only to a particular user
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Feb 12, 2012
i, I've Two database one for primary(GISC) and one for standby (GISCST) when i start open standby database i appeare erro :
ORA-16004: backup database requires recovery
ORA-01152: file 1 was not restored from a sufficiently old backup
ORA-01110: data file 1: 'D:\ORACLE\ORADATA\ORCLSB\SYSTEM01.DBF'
I take the copy the datafiles from primary database and Pase them to the Standby database and the Enviroment of two database is :
SPfile for primary(GISC) IS:
*.compatible='10.2.0.3'
*.control_files='C:\oracle\product\10.2.0\oradata\gisc\CONTROL01.CTL','C:\oracle\product\10.2.0\oradata\gisc\CONTROL02.CTL','C:\oracle\product\10.2.0\oradata\gisc\CONTROL03.CTL'
*.db_block_size=8192
[code]....
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Jun 3, 2013
What privilege needs to give the user for ready only access for OEM for limited instances not all instances.
Purpose: our application dba team just want monitor the specific databases that why they asked to create read only access account for OEM for limited databases.
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