ALTER Table Add column not null, no default

Similar Questions

• Invalid procedure after alter table add < column >

  Hello Experts,

  I was faced with a situation where I add a column in a table that is used in a procedure, immediately after the addition of the new procedure associated with this table column becomes invalid.

  Can someone explain please know why this happens.

  Database version:-11.2.0.4.

  I was faced with a situation where I add a column in a table that is used in a procedure, immediately after the addition of the new procedure associated with this table column becomes invalid.

  Can someone explain please know why this happens.

  Yes - the Oracle documentation explains this. I found this doc with a simple search of "column, add the oracle 11g invalid procedure.

  http://docs.Oracle.com/CD/B28359_01/server.111/b28318/dependencies.htm#CHDJIIFC

  Table 6-2 , shows how objects are affected by changes to other objects upon which they depend.

  Table 6-2 operations affects this object status

  Operation	Where the status of dependent objects
  ALTERTABLEtableADDcolumn	INVALIDWhen: Uses of the object (except a view)-dependent SELECT * on table . Dependent object uses table %rowtype . Dependent object performs INSERT on table without specifying a list of columns. Dependent object references table in the query that contains a join in SQL. Dependent object references table in the query that refers to a PL/SQL variable. Otherwise, no change.

  Read the WHOLE ARTICLE and see if it does not have to explain your problem.

• Update on nulls in the column vs add column not null default 11 g

  Hello
  
  Let's take a scenario following 1. *
  
  We have a large partitioned table LARGE_TABLE1 (say: NUM_ROWS 5 904 977 029, size GB 326) in the Oracle 11 database.
  
  We want to add a new column NEW_COLUMN (NUMBER) and give a value of-999 to NEW_COLUMN each record in this table.
  

  ALTER TABLE LARGE_TABLE1 ADD (NEW_COLUMN NUMBER DEFAULT -999 NOT NULL);

  In Oracle 11 it would probably a second since the value of default -999 would be permanently added in metadata without updating each and every record 6 bln.
  
  Take a scenario 2 *
  
  We have another large partitioned table LARGE_TABLE2 (of similar size as LARGE_TABLE1) in the Oracle 11 database.
  
  We have an existing EXISTING_COLUMN (NUMBER) column that contains nulls 90% (90% of scores only contain null values in the field, and 10% of the scores only contain non-null values in this field)
  
  I would like to replace null values in EXISTING_COLUMN with number - 999.
  
  Update the column full Ascension not going :-) and doing so in a loop (the partition partition) would take a few days.
  
  Question:
  Do you know a way somehow write this -999 "overall" in the metadata as in scenario 1 instead of updating a null value in all the records to-999? No clever workaround solution would be appreciated...
  
  Edited by: SwPiotr 2012-04-24 07:26

  ALTER TABLE LARGE_TABLE1 ADD NEW_COLUMN NUMBER GENERATED ALWAYS AS nvl(col1, -999);
  

• How to add the not null columns to an existing table?

  I have a table with hundreds of row inside. I try to add a new column not null. It gives me the following error
  
  ALTER TABLE sys.xyz CHANGE xyz_no number 4 DEFAULT '1' NOT NULL;
  
  ORA-02296: impossible to activate (sys.) - found null values
  
  Also I tried to do the following
  
  ALTER TABLE sys.xyz CHANGE xyz_no number 4 DEFAULT '1';
  
  And then I tried to ALTER TABLE sys.xyz CHANGE xyz_NO number 4 NOT NULL; and I still gives me the same error. I took the tally for null values for the same column and has 1555.
  
  In this case how can I change my article with not null not?. Please help, I am a newbie in oracle.

  I cry out to you for creating a table as SYS. However, I'm going to fully support Sybrand making. Never, ever, create any object as SYS unless the source code received you from Oracle in a patch.

  Now to your question.

  SQL> CREATE TABLE test (
    2  col1 NUMBER,
    3  col2 NUMBER);
  
  Table created.
  
  SQL> INSERT INTO test VALUES (1,1);
  
  1 row created.
  
  SQL> INSERT INTO test VALUES (2,NULL);
  
  1 row created.
  
  SQL> ALTER TABLE test ADD (newcol NUMBER);
  
  Table altered.
  
  SQL> ALTER TABLE test
    2  MODIFY (newcol NOT NULL DISABLE);
  
  Table altered.
  
  SQL> SELECT * FROM test;
  
        COL1       COL2     NEWCOL
  ---------- ---------- ----------
           1          1
           2
  
  SQL> UPDATE test SET newcol = 3;
  
  2 rows updated.
  
  SQL> SELECT * FROM test;
  
        COL1       COL2     NEWCOL
  ---------- ---------- ----------
           1          1          3
           2                     3
  
  SQL> SELECT constraint_name
    2  FROM user_constraints
    3  WHERE table_name = 'TEST';
  
  CONSTRAINT_NAME
  ------------------------------
  SYS_C0036620
  
  ALTER TABLE test ENABLE CONSTRAINT SYS_C0036620;
  

• ADD A NEW COLUMN NOT NULL

  Hello
  I try to add a new column not null in the emp default table exist. Initially, I created the column (like BONUS) and then I try to apply the constraint in this amended by order. But it does not happen I mean forced is not added to the column as already the column will have NULL values for records existing (or lines). Can someone help me how to solve the problem?
  
  Thank you and best regards,
  Vishnu.

  first disable constraint...

  ALTER table dept change the ur_constraint_name disable constraint;

  then insert the data can

  ALTER table dept change the ur_constraint_name novalidate constraint;

  then

  ALTER table dept change enable NOVALIDATE constraint ur_constraint_name;

  Try this we can help

• Adding column not null in the existing table.

  How to add a column not null in the existing table?
  explain.
  Thank you

  create table abc_ex(a number);
  
  alter table abc_ex add(b number not null);
  
  desc abc_ex
  

  If for use then change to ALTER column extising

  Published by: nkvkashyap on May 27, 2013 21:49

• Change the default value of column NOT NULL to NULL

  Hi all
  How can I change the default value of column not NULL to NULL?
  Suppose I have run the following commands:

  SQL> alter table hr.test modify temp_num2 default null;
  
  Table altered.
  
  SQL> desc hr.test;
   Name                            Null?    Type
   ----------------------------------------- -------- ----------------------------
   TEMP_NUM                             NUMBER
   TEMP_NUM2                       NOT NULL NUMBER

  Why forced temp_num2 has not changed with the NULL value? I'm under 11.g rel2
  
  Best regards
  Valerie

  You can NOT change the column constraint NULL to contain NULL values by:

  alter table table_name modify column_name null; 
  

  After this change, the column can contain null values. In Oracle, not null constraints are created automatically when not null is specified for a column. Similarly, they are deleted automatically when the column is changed to allow NULL values.

• Columns not null showing that nullable in the table grid

  I use 2.1.0.63 sql developer.
  I ran the following in my diagram
  

    CREATE TABLE EXCLUDE_DATA 
     (OWNER       VARCHAR2(30), 
      TABLE_NAME  VARCHAR2(30), 
         COLUMN_NAME VARCHAR2(30), 
         CONSTRAINT CK_OWNER CHECK (owner IS NOT NULL) ENABLE, 
         CONSTRAINT CK_TABLE_NAME CHECK (table_name IS NOT NULL) ENABLE
     );
   
   COMMENT ON TABLE EXCLUDE_DATA IS 'Tables and Columns to exclude from the column checker';
   COMMENT ON COLUMN EXCLUDE_DATA.OWNER IS 'The schema that contains the table';
   COMMENT ON COLUMN EXCLUDE_DATA.TABLE_NAME IS 'The table name to be excluded from the column checker';
   COMMENT ON COLUMN EXCLUDE_DATA.COLUMN_NAME IS 'The column on the table to be excluded.  If null then the whole table is excluded';
  
    CREATE UNIQUE INDEX UK_EXCLUDE_DATA ON EXCLUDE_DATA (OWNER, TABLE_NAME, COLUMN_NAME);

  When the name of the table is selected, and the tab for the column that is selected in the main window it's showng columns as nullable (see below)

  OWNER     VARCHAR2(30 BYTE)     Yes          1     The schema that contains the table
  TABLE_NAME     VARCHAR2(30 BYTE)     Yes          2     The table name to be excluded from the column checker
  COLUMN_NAME     VARCHAR2(30 BYTE)     Yes          3     The column on the table to be excluded.  If null then the whole table is excluded

  The constraints are there however, it looks like a potential problem with just this window.

  CeeJay

  Adding a not null to a column check constraint does not have the non-nullable column.

  Try instead this statement

  CREATE TABLE EXCLUDE_DATA
  (THE VARCHAR2 (30) IN OWNER NOT NULL,)
  TABLE-NAME VARCHAR2 (30) NOT NULL,
  COLUMN_NAME VARCHAR2 (30)
  );

  COMMENT on TABLE EXCLUDE_DATA IS "Tables and columns to exclude from the audit of the column;
  COMMENT ON THE EXCLUDE_DATA COLUMN. OWNER IS 'of the schema that contains the table.
  COMMENT ON THE EXCLUDE_DATA COLUMN. Table_name IS "the name of table to be excluded from the audit of the column;
  COMMENT ON THE EXCLUDE_DATA COLUMN. Column_name IS ' column on the table to be excluded. If set to null, then the entire table is excluded. "

  CREATE A UNIQUE UK_EXCLUDE_DATA ON EXCLUDE_DATA (OWNER, TABLE_NAME, COLUMN_NAME) INDEX;

  The database AUTOMATICALLY adds check for columns NOT NULL constraints.

  Hope this helps

  Concerning
  Chris

• What is the solution to add is not null to an existing table that has the data

  I have an employee table that contains the data that I want to change the column NOT NULL .i get error saying e-mail
  table cannot be changed when the data is there... any other solution for this?

  I have an employee table that contains the data that I want to change the column not NULL.
  I get error message saying table cannot be changed when the data is there... any other solution for this?

  Create a new column that can contain NULL.
  New column UPDATED with the old data
  remove the old column
  Rename new old column_name column

• ALTER table add constraint vs alter table change

  Hello

  could someone explain why we have two different statements when you add a constraint on an existing table?

  If I need to add a primary key constraint to a column from an existing table that I use:

  ALTER table tab1 add the key primary constraint tab1_id_cst (id)

  But if I want to add a NOT NULL constraint, the same syntax does not work, I need to use alter table change instead

  Why?

  Thank you!

  Hello

  The constraint not null is a constraint inline, average, it applies to the column level. So in order to change anything at the column level you must use "ALTER TABLE CHANGE" only.

  Remaining constraint is forced to outline, which are part of the table definition. The table definition can be modified by "ALTER TABLE... ADD '.

  In the framework of the above mentioned constraints, those are the two columns level constraints and table except constraint NOT NULL value. Change column level, you must use the syntax

  and for the level of the table, you need to use the respective syntax.

  Kind regards

  Bigot

• How to add constraints not null

  Data modeling Version 4.1.1.888 SQL

  How to add constraints not null in sql modeling data and rename the default constraint name that is getting generated when marking column as required.

  You can edit the template for the names of constraint not Null under properties-> setting->-> models naming standards. Change one marked 'not forced Null. Then, under preferences-> Data Modeler-> DDL, you must uncheck "generate short form constraint NOT NULL".

  

• alter table drop column

  Hi all

  I create a simple table like this:

  create table x (a number, b varchar2 (20));

  ALTER table x modify a primary key constraint a_pk;

  insert into x values (1, 'first row');

  insert into x values (2, 'second row');

  commit;

  Then:

  SQL > select * from x;

  A AND B

  ---------- --------------------

  1 first row

  2 second row

  Then I run these commands:

  SQL > alter table drop column x.

  Modified table.

  SQL > select * from x;

  B

  --------------------

  first row

  second row

  Question: Why am I able to remove this column when a PRIMARY KEY for the table? I do not use the key words of CONSTRAINT CASCADE with the DROP COLUMN clause...

  I have Mr. Steve O'Hearn here saying this in his book 'Certified Expert Guide exam 1Z0-047:

  CREATE TABLE ORDER_RETURNS

  (NUMBER OF ORDER_RETURN_ID,

  NUMBER OF CRUISE_ORDER_ID

  DATE OF CRUISE_ORDER_DATE,

  CONSTRAINT PK_OR PRIMARY KEY (ORDER_RETURN_ID));

  .. We can not remove the column the table ORDER_RETURNS that

  is subject to the constraint PRIMARY KEY (ORDER_RETURN_ID)... The reasons are:

  ORDER_RETURN_ID is the PRIMARY KEY of this table...

  Isn't this correct?

  No - it's NOT correct - the book is bad.

  You could have just tested the FULL example in the book to verify that the statement is wrong.

  http://weirdoootamee.yolasite.com/resources/Oracle%20sql%20expert.PDF

  See page 432

  CREATE TABLE CRUISE_ORDERS
  (NUMBER OF CRUISE_ORDER_ID,
  ORDER_DATE DATE,
  PK_CO (CRUISE_ORDER_ID, ORDER_DATE) PRIMARY KEY CONSTRAINT);

  CREATE TABLE ORDER_RETURNS
  (NUMBER OF ORDER_RETURN_ID,
  NUMBER OF CRUISE_ORDER_ID
  DATE OF CRUISE_ORDER_DATE,
  CONSTRAINT PK_OR PRIMARY KEY (ORDER_RETURN_ID).
  FOREIGN KEY CONSTRAINT FK_OR_CO
  (CRUISE_ORDER_ID, CRUISE_ORDER_DATE)
  REFERENCES CRUISE_ORDERS (CRUISE_ORDER_ID, ORDER_DATE));

  create two tables - add data, if you want.

  Then try to delete the primary key column and see what happends

  ALTER table drop column order_return_id order_returns;

  The best way to learn is to actuall TRY of THINGS.

  Try it with your own table, but the FIRST thing that you should try was the real example of the book.

• force a view column not null

  I can't create a view with a column not null. Using this script, you can see that the resulting table is a constraint not null for the first column, even if the two columns of the source of this line are not null. Is anyway to force the view on the occasion of this first column as not null? (I need to ODP.NET if I get an error here)
  
  DROP TABLE MYTABLE;
  
  CREATE the table MYTABLE
  (COL1 NUMBER (2) NOT NULL,)
  col2 number (2));
  
  drop table mytable2;
  
  CREATE the MYTABLE2 table
  (THE NUMBER (2) COLA NOT NULL,)
  colB number (2));
  
  create or replace view MYVIEW as select col1, col2 from mytable union select cola, colb from mytable2;
  
  Bird DESC;

  >
  Is anyway to force the view on the occasion of this first column as not null?
  >
  No--and there's a related problem if you create a table with a view. For example, the table emp has empno as NOT NULL. I have a copy of the named emp1 emp where empno is also NOT NULL.

  create or replace view v_emp as select empno from emp
  

  A view on the highest describe statement shows empno as NOT NULL. But, as you've discovered if you ask another Union column will become NULLABLE in the view described.

  The question is that if I use the view (on the single table of emp - no union or the second query) to create a table

  create table t_emp as select * from v_emp
  

  A describe on this table statement will show empno as NULLABLE.

• Estimating redo size of alter table DROP COLUMNS CONTINUE checkpoint of 10000

  Hello
  in my 10.2.0.3, I've got table size 90 GB suffering:
  ORA-12986: columns in partially suspended state. Propose to ALTER TABLE DROP COLUMNS CONTINUE
  I need to know how to estimate the size of redo of the:
  change the control of MORE of COLUMNS DROP table 10000 point.
  Is 2 x good estimate of table size?
  Kind regards.
  Greg

  GregG says:
  Please clarify for me how are distinguished between nitrifiants delay block trial and lower real column continue the process.
  Looks like DBC process will increment statistics such as:

  drain plug - number of calls ktugct
  gullies only - consistent read gets

  It's a good indicator, even if I think the specific statistics could be:

      commit txn count during cleanout
  

  I think it's one that tells you that you have made a change of "validation of transaction" to a block.

  I don't know why the CBD process is such redo intensive, is not on the update of ITL bit in db blocks only?

  It updates the inputs ITL and lock bytes, and it takes only entry of redo block; the overload of the roll forward database is in the tens of bytes is small compared to the 240 bytes per row of the column to fall - but if you have a large number of blocks to go before continue it really starts to have an effect, you might be fooled.

  WARNING - I haven't checked to see if delay block drain plug behaves (or even happens) on Delete column in the way that it would perform a simple update in bulk.

  Concerning
  Jonathan Lewis

• Quick question: alter table, alter column NOT NULL...

  Hey all,.
  
  If I change 3 populated (they have data) columns in a table with about 300 million of NULL lines that is NOT NULL:
  
  alter table blah
  change (col1, col2, col3 NOT NULL NOT NULL, NOT NULL);
  
  ... about cela "will take a long time?
  
  I know that it is a question REALLY of high level, but I wonder how long it should consume (a few minutes or several minutes - looking for an approximate answer as well). The table has 10 columns, if that helps.
  
  Hardware specifications are not relevant... I am looking for a basic response.

  Hello

  Plug material is relevant here.
  It depends on the material/Oracle parameters/IO etc..
  You can also view v$ session_longops to track progress.

  Concerning
  Anurag Tibrewal