Is it possible to change the datatype of a column in a table online, using DBMS_REDEFINITION?
If Yes, then which of the options will be used with DBMS_REDEFINITION package?
I am trying to redefine a table as to get clear of the thousands of chained and migrated rows. The darn table contains a lob column.I am trying to complete the process with the dbms_redefinition package.
I've createad the temporary table with all option to nologging. I've started the redefinition at midnight and it not yet completed and I can't find why it is taking so long. I've done the process with a table, similar in size in a Dev environement and it took at most two hours. In production, the process has been going on for 10h30 now.
I can see my tablespace size increase from time to time and when I querry the dba_segments to find out the size of both tables my temporary table is now 4 times the size of the original table.
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.
I need to modify the column type that already has data in it, i need it change varchar to number then The datas entered have $ and , (e.g $3,200). I need the $ and , removed with column type set to numbers.
When i currently do this i get the following error:
The TABLE operation was not successful for the following reason:
ORA-01439: column to be modified must be empty to change datatype
I've tried unloading the data and loading the data using the spreadsheet, cut and past and csv file but both give me more errors, so i just want that one column modified.
I am updating a table column which is xml datatype and am getting above error.Below is the process what i did. since the xml is too large i split them into small chunks.
DECLARE
conditionXML CLOB;
ls_xml_2 Clob;
ls_xml_3 clob;
ls_xml_4 Clob;
ls_xml_5 Clob;
ls_xml_6 clob;
ls_xml_7 Clob;
[code]...
a) What if i want to find out the Datatype of a specific column in the Table.
b) How do i find the Column Datatypes?
Is it possible to replace datatype of column of one table with another table's column datatype using %type like below
SQL>create table test1 (v1 varchar2(10));
SQL>create table test2 (v1 test1.v1%type);
I have a requirement that i should list out all the table names which are all using timestamp datatype in a specified schema. Is there any way to find those table names by using any system tables.
View 1 Replies View Relatedshare what can we do to over come this issue?We are running 11.2.0.2 on IBM Aix. I am trying to do an redef and this is what i see:
Received an ORA-1555 error on a table redefinition with LOB segments.
ERROR at line 1:
ORA-12008: error in materialized view refresh path
ORA-01555: snapshot too old: rollback segment number with name "" too small
[code]...
As the ORA-01555 error does have a name we know that this is LOB related.We are using Automatic Undo mode and have RETENTION specifed on the LOB segments in both the source and target tables for the redefinion.The LOB segments in the source table are stored out-of-line (DISABLE STORAGE IN ROW) while the LOB segements in the target table are stored in-line (ENABLE STORAGE in row).There are a very large number of updates occuring on the source table. The table is quite large and the redefintion failed after 36 hours.
In oracle documentation we're finding conflicting information as to whether the UNDO_RETENTION database parameter affects the LOB storage RETENTION parameter, and therefore whether increasing our UNDO_RETENTION will be useful in this issue. The SQL manual indicates that it does affect this saying 'Oracle Database uses the value of the UNDO_RETENTION initialization parameter to determine the amount of committed undo data to retain in the database.'
Our current undo_retention is set to 21600.
How can we resolve this ORA-1555 error?
I have created an Object Type and this Type is mapped to a column datatype in a table.This Table has values inserted.
create or replace
type column_type as object (
col_name varchar2(30),
col_comment varchar2(4000)
);
[code]....
ORA-02303: cannot drop or replace a type with type or table dependents...how to resolve this issue without having to delete any column from the table?
I performed the Table Redefinition process on one of my transaction tables. I wanted to redefine the existing table to a new table with partitions. Everything worked fine until i reached the last step where we had to drop the interim table. Now in between the redefinition , we created the interim table with partition along with the constraints and indexes and then atlast ran the "dbms_redefinition.finish_redef_table" proc to finish the redefinition.
And after that when I tried to drop the interim table , I am getting the below error message
"ERROR at line 1: ORA-02449: unique/primary keys in table referenced by foreign keys"
So this means all the constraints from my actual table were swapped with the interim table and hence I am getting this error.So is this a normal case or I have missed something while performing the redefinition? If thats normal then should i Just Drop table tablename CASCADE CONSTRAINTS?
I am currently in the process of migrating our database from US7ASCII to AL32UTF8 using DMU.
I am stuck at a point where I have encrypted data that, when the conversion happens, will be destroyed. Oracle suggests to move the data which is currently stored in VARCHAR2 datatype, to a "character set safe way" like hex notation or base64 before converting.
I have a table called cust_file, his table consists of a lot of columns (one of these columns called cus_tax) and have a lot of data,I use oracle 11g, I want to change the default value of the column cus_tax to be equal 1, I wrote
ALTER TABLE cust_file MODIFY(cus_tax DEFAULT 1); table alteredbut
after I inserted new data to test the operation, I found that the new record has a value
= null for the column cus_taxthen
I tested using the following query select
data_default from all_tab_columns where table_name='CUST_FILE' and column_name='CUS_TAX'; no rows selected...
Change the default value of the column cus_tax.
i have one table emp in this table i have the column eno,ename,hiredate and i have data also in this table.
my eno colum data type is number so now i have to change this colum data type from number to varchar2.
if yes how can when i am trying to change this colum data type i got this error
Failed to commit: ORA-01439: column to be modified must be empty to change datatype.
on this query. I need to get a particular value from a column which is a BLOB datatype. Here is the sample
data ID TESTDATA1 Best Buy
00001234 12222 30 00 2
Lowes 00001234 12222 100 00 3
Walmart 00001234 12222 129 00 4
abc 00001234 12222 5000 00 5
Toshiba 00001234 12222 21 00 6
abcdefghij 00001234 12222 49 00
Where '00001234' is the Invoice , '12222' is Netamount field and highlighted in red is the $ amount for that invoice.
The only data i need query to return 12222 (netamount)= $amount. I tried using substr select substr((TESTDATA),19,26)test from TABLEA; But this gives me the only the first row but not other amount which have different positions.
Here is the desired output
OutputID TESTDATA 1
12222 30 2 12222 100 3
12222 129 4 12222 5000 5
12222 21 6 12222 49
i am running one query which is here
INSERT INTO shiftsample (Empid, PPDate, Inpunch, outpunch)( SELECT Emp_ID, PDate, In_Punch, Out_Punch FROM ProcessDailyData WHERE PDate = to_char(2012-10-15,'yyyy-MM-dd') AND Emp_ID = '00000001' );
in this query pdate has timestamp datatype and in shift sample ppdate column has date type. so i am not able to insert value from process daily data table.
getting this error.
SQL Error: ORA-01481: invalid number format model
01481. 00000 - "invalid number format model"
*Cause: The user is attempting to either convert a number to a string
via TO_CHAR or a string to a number via TO_NUMBER and has
supplied an invalid number format model parameter.
i am having one column name pdate with date datatype
i am updating here value like this
update table1 set pdate='15-10-2012' where id=1;
but showing error: not a valid month.
how to update this.
I have two tables with BLOB datatype. I am trying to copy from one column to another column , i am getting errors
CREATE OR REPLACE PROCEDURE update_blob_lob_copy(
v_id in integer,
v_string in varchar
)
as
auditlob lobdemoaudit.theblob%type;
sourcelob lobdemo.THEBLOB%type;
[code]...
How to increase datatype of the column which already has data i.e. varchar 10 to 25 bytes
View 2 Replies View RelatedI want to decrease the size of testid column of number datatype in my "test" named table from size 20 to 15 and the data of maximum size is of 10 digits. but oracle throws an error "ORA-01440: column to be modified must be empty to decrease precision or scale". i cant understand why it is happening?
what is the reason behind it even though new size is maximum than the maximum size of existing data. but when i decrease the size of "varchar2" then oracle does not through any error.
I have a table defined where some columns are of the datatype RAW(16). In fact these are foreign keys to other tables. Our company has a policy that all primary keys are of the datatype RAW(16). Not much I can do about that.
Now I want to retrieve all columns of a certain row in that table and just visualize the foreign keys in hex format. All values are filled out nicely, except the columns with datatype RAW(16). Is there something special I have to do to retreive and display these? I defined an item as text-field for these, but this doesn't seem to be working...
I'm using APEX 4.1.1.00.23 at this moment...
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?
I am trying to load the data from .csv file into the table using SQL Loader.
The table has the following schema:
src_id : number,
dest_id : number,
range: intsys.interval_typ --- > a type containing (lower,upper)
payload : varchar2(100)
The loader.ctl file is :
load data
infile *
append
into table sb_packet
fields terminated by "," optionally enclosed by ' " '
(src_id,dest_id,range,payload)
BEGINDATA
3,32,intsys.interval_typ(10043,142703),"misc data"
When I use the following this ctl file to transfer the data, i get the following error:
SQL*Loader-418: Bad datafile datatype for column RANGE
we are facing an issue with the dbms scheduler jobs, which is not processing the synonym which is created via dblink from anthoer schema.
Let me explain the situation.
Table in Schema :APP_COMMON DB: APPL
-------------------------------------
CREATE TABLE TEST_LOG (A VARCHAR2(10));
INSERT TEST_LOG VALUES ('TESTED');
GRANT SELECT ON TEST_LOG to APP_GEN ;
Table in Schema :APP_GEN DB: APPL
-------------------------------------
CREATE SYNONYM TEST_LOG FOR APP_COMMON.TEST_LOG;
SELECT * from TEST_LOG;
-- it returns the value
Table in Schema :APP_GEN DB: REPORT
-------------------------------------
This is the different DB (we have 2 DB's, one for report db and one for application DB). here we create the DB link (connected DB menthod) . Since we have the password sync between the databases, we create the DBLINK without user id and password.
CREATE DATABASE LINK "APPL_LINK"
USING 'APPL' ;
CREATE SYNONYM TEST_LOG FOR TEST_LOG@APPL_LINK;
SELECT * from TEST_LOG;
--it returns the value.
Now in the same DB, we have a scheduler which will run for every min.
Now Scheduler is not selecting this table. Rather not processing the synonym(TEST_LOG). Not able to capture the exception also.
I would need to convert the column datatype from BLOB to CLOB. currently in the table, the BLOB column has the data. the requirement is to convert this column from BLOB to CLOB datatype.
How to convert from BLOB datatype to CLOB datatype ?
I need redefine a Materialized View (add some columns). I try it with:
drop materialized view TCPIP preserve table;
ALTER TABLE TCPIP ADD (SUM_IP_OUT_OF_SEQ NUMBER)
/
ALTER TABLE TCPIP ADD (SUM_IP_OUT_OF_SEQ NUMBER)
/
and than create a new MV:
CREATE MATERIALIZED VIEW TCPIP
ON PREBUILT TABLE USING NO INDEX NEVER REFRESH ENABLE QUERY REWRITE as
SELECT ...
But with Oracle error: ORA-12060: shape of prebuilt table does not match definition query
I check the new MV definition, it is contain the 2 added columns.
I have a problem with DBMS_DATAPUMP.metadata_filter.Let's suppose that I need to export a huge list of tables (a,b,c,d,e,f,g,h,i...). Let's suppose that the list is dynamic do NOT want to use
DBMS_DATAPUMP.metadata_filter (handle => h1,
NAME => 'NAME_EXPR',
VALUE => 'IN (''a'', ''b'', ...)',
object_type => NULL);
In my_export_table there is the list:
CREATE TABLE my_export_table
(
EXPORT_OBJECT_NAME VARCHAR2(50 BYTE)
)
Now I'm trying to use this form:
DBMS_DATAPUMP.metadata_filter (handle => h1,
NAME => 'NAME_EXPR',
VALUE => 'IN (SELECT a.export_object_name FROM my_export_table a, user_objects b WHERE a.export_object_name = b.object_name AND b.object_type = ''TABLE'')',
object_type => NULL
);
but it results in error.
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
ORA-39125: Worker unexpected fatal error in KUPW$WORKER.GET_TABLE_DATA_OBJECTS while calling DBMS_METADATA.FETCH_XML_CLOB []
ORA-00942: table or view does not exist
[code]...
I have question related to LONG datatype. Actually from google and get to know that one table can have only one LONG datatype when i searched for reason . i got these resons:-
With 9i (I believe) and later versions, Oracle deprecates using the long datatype in favor of the lob (clob, nclob and blog) datatypes. It is only supported for backward compatibility.
Restriction:- It can not be used in create type as an attribute of the defined type.
It can not be used in where conditions.
There can be no indexes on long columns.
Regular Expression are not possible.
long can not be returned from a stored function.
SQL can not call functions that have an attribute of type long.
And even more restrictions.
So I want to know that is only reason because of that Oracle doesn't allow us to make two Column or is there any strong reason which make it more logical Like storing of data in Row blocks or some thing else.
I'm trying to create a table 'a' with column name as 'flag' and datatype as 'boolean' ie. create table a(flag boolean);
is it possible in sql or pl/sql in oracle?
If its possible to create a table and also let me now inserting row and what boolean should return.
Below is my requirement.
Need to change the precision of a column in a existing table. Statistics about the table
* has over 130 columns
* More than 300 million records
* Column to modify is #121 which has data
* No primary key defined
Since the column has data, it is not possible to modify with a simple Alter.
Second option - create temp column in same table, update from original, put null in original, alter, update back from temp, drop the temp column. This approach is very expensive and time consuming.
Also the Column ID needs to preserved as #121.