Truncate / Drop Partitions In Table Having Nested Table Columns
Sep 7, 2012
I have a table that has 2 columns of type nested table. Now in the purge process, when I try to truncate or drop a partition from this table, I get error that I can't do this (because table has nested tables). how I will be able to truncate/drop partition from this table? IF I change column types from nested table to varray type, will it work?
Also, is there any short method of moving existing data from a nested table column to a varray column (having same fields as nested table)?
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Aug 9, 2013
I couldn't either DROP or TRUNCATE the table partitions that were created. Here are the DDLs and DMLs I'm using.
Create table student(no number(2),name varchar(2)) partition by range(no) (partition
p1 values less than(10), partition p2 values less than(20), partition p3 values less
than(30),partition p4 values less than(40));
Insert into student values(1,'a');
Insert into student values(11,'b');
Insert into student values(21,'c');
Insert into student values(31,'d');
When I do the following query, it returns data.
SELECT * FROM STUDENT PARTITION(p1);
But, when I try to perform any of the following queries, it says invalid partition name.
ALTER TABLE STUDENT DROP PARTITION p4;
ALTER TABLE STUDENT TRUNCATE PARTITION p3;
I am using Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit
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May 13, 2011
I am trying to Truncate the table but it doesnt get truncated. When I issue the command it even doesnt throw the error. I also tried to drop the table but cant even able to drop the table. I thought table might be locked. But it allows me delete a row from the table.
I am using Oracle 11g Release 11.1.0.7.0
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Jul 8, 2011
I have to drop some partitions in table on production environment (to get free space). The environment have to be continuously available. I was considering of use ALTER TABLE ... DROP PARTITION ... UPDATE INDEXES but it is slow, because of use clause UPDATE INDEXES. Is there another possibility to remove these data?
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Apr 24, 2013
I ran into an issue in a project where a function is recreating an index-organized table by doing:Table Structure:
CREATE TABLE table_iot(
...)
ORGANIZATION INDEX
OVERFLOW ...;
Recreate Steps:
1) Populate global temporary staging table (gtt) with data
-- where gtt is staging for target index-organized table (iot)
2) Lock the target index-organized table (iot)
3) Copy old iot data to gtt
-- gtt now contains old and new data
4) Create new index-organized table (iot2) from gtt
-- iot2 now contains old and new data
[code]...
Because index-organized tables are primarily stored in a B-tree index, you can encounter fragmentation as a consequence of incremental updates. However, you can use the ALTER TABLE...MOVE statement to rebuild the index and reduce this fragmentation.The following statement rebuilds the index-organized table admin_docindex:
ALTER TABLE admin_docindex MOVE;
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Nov 26, 2012
We have a table with interval partition. This table is accessed very frequently. We are suppose to exchange partitions between this actual table from it's corresponding staging table.
In order to keep the newly created partitions empty, is there a way to restrict other applications from using it before we push data from staging table to it's actual table.
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Sep 26, 2011
Query to drop partitions on a table who have no.of rows as zero.
select 'ALTER' || '' || 'TABLE' || TABLE_NAME || 'DROP' || 'PARTITION' || PARTITION_NAME from dba_tab_partitions where TABLE_OWNER='xyz' ;
select count(*) from table_name partition (partition_name);
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Aug 2, 2012
I have table t1 and t1 , I want a procedure that will insert all records from t1 into table t2 and after successfull insert table t1 should be truncated .
If their is any problem in insert in to table t2 , the truncate command should not work .
Truncate command should work only after successfully insert command .
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Sep 29, 2011
writing a trigger to drop partitions with zero rows which are older than 6months and drop the local indexes and rebuild the global indexes for any schema in a databaase ?
I have tried the below code :
declare
v_statement varchar2(600);
v_rows number;
begin
for x in (select *
from dba_tab_partitions
[code]........
I want to avoid using row number and also want to dynamically select a schema when executing the script.
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Nov 12, 2012
In my database,stale_percent is set to 10. and i have table which has partition. i have dropped table partition dropped which has 10% of data. I would like to know whether oracle will consider only insert,update,delete as stale percent or will it include the dropping paritition data also. Because my stats gather is not running. When i include drop partition data it exceed 10% of stale_percent,But excluding dropped partition it is not exceeds 10% of stale.
TABLE_NAME PARTITION_NAME SUBPARTITION_NAME INSERTS UPDATES DELETES TIMESTAMP TRU DROP_SEGMENTS
------------------------------ ------------------------------ ------------------------------ ---------- ---------- ---------- ----------- --- -------------
sample_DATA_DATA 235825577 0 0 11-NOV-2012 NO 3
test_DATA_DATA 811618472 0 0 11-NOV-2012 NO 12
sample_DATA_DATA SYS_P2665099 3005966 0 0 11-NOV-2012 NO 0
sample_DATA_DATA SYS_P2665119 3873671 0 0 11-NOV-2012 NO 0
[code].....
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Jul 17, 2013
11.2.0.3 This is for a build. We are still in development. No risk of data loss. As part of the build, I drop the user,re-create it, re-create the objects. Allows us to test the build all the way through. Its our process. This user has some tables with several 1000 partitions. I ran a 10046 trace and oracle is using pl/sql to do loops to do DML against the data dictionary. Anyway to speed this up? I am going to turn off the recyclebin during the build and turn it back on. anything else I can do? Right now I just issue 'drop user cascade'. Part of is the weak hardware we have in the development/environment. Takes about 20 minutes just to run through this part of the script (the script has alot more pieces than this) and we do fairly frequent builds. I can't change the build process. My only option is to try to make this run a little faster.
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Aug 29, 2012
Is Oracle will support Multi value storage ? In what way we can use Nested table? In real time application where we can use nested table . What is the usage of nested table in real time application.
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Jan 8, 2011
If I try create table from the following syntax
create table a as select * from table b;
Then I could get only base table structure alone, I would like to get partition syntax as well.
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Sep 13, 2012
My developer came with a requirement of creating partitions on a table which has 40 million records. His exact requirement is to create as many as partitions in such a way that 1 partition should not exceed 5k-10k records and these records should be inserted/updated on the same date (i.e. using a column as source_timestamp field). How to accomplish this?
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May 17, 2013
The Scenario is that we have Master and detail table (With Foreign key enabled), we want to TRUNCATE Master table.
1) Is there any option which can Truncate the table without disabling the constraints for child tables...we want to Truncate the table forcefully..
2) What will be best method to truncate a Table having Master detail relation (Foreign key enabled) and we need to truncate the table without disabling the constraint ( if there are records in child table)
3) What will be best method to truncate a Table having Master detail relation (Foreign key enabled) and we need to truncate the table without disabling the constraint ( if there are NO records in child table
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Aug 16, 2012
i need to import into table A. Before that i will do a truncate.
I will disable the constraint.
DO i need to disable any triggers on the table before importing?
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Nov 10, 2010
I have tables in production which has got huge no of partitions(say more than 100), but I would like to extract table definiation along with mentioned few partitions(say 10 partitions) alone. How to do that, which way is the best to extract DDL with right format.
because when I use metadata package the format for the extraction is not good, is there a way to extract table definition with mentioned partition names.
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Mar 9, 2010
How can we partition the existed table.
The table is like this
CREATE TABLE my_table (
id NUMBER,
description VARCHAR2(50)
);
[Code]...
I want to partition this table into 3 partitions.
The first partition should contain the values less than 3.
The Second partition should contain the values less than 5.
The third partition should contain the values less than 6.
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Sep 28, 2012
We are using partition exchnage to swap individual partitions into table which then backed up.
This being done one partition at a time.
Is it possible to swap several partitions of a tabel in one go.
using Oracle 11.2.0.3
partioned by date, one partition of reach day.
Is it possible say to move the last 7 days partitions into the other table for backup using partition exchange?
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Jan 30, 2013
on 11G R2,
We want to grant truncate any table to a user.
How ?
We should create the following procedure ?
1. Create the procedure to truncate the table.
create or replace procedure truncate_table (
table_name varchar2,
storage_type varchar2)
[Code]....
grant execute on <procedure_name> to <user>Is it for only one table ? If yes how to do that for all tables ? Or the tables of a schema ?
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Mar 7, 2013
Our DB is 11g and approximately, how much time it takes and do we need to rebuild indexes after truncate?
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Feb 11, 2013
What is the limit on number of partitions on a table.on many forums , 1024k-1 is given the maximum limit.But Exactly , I am not able to understand this 1024k-1.
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May 24, 2012
Our client has this scenario:May 23th 4:00 PM a user truncate a critical table. The customer need to recover the data before truncate.
The recover materials list like this:
1. A cold backup of this database at May 1th.
2. The archive log except May 1th ~ May 15th.
3. Every day exp at 00:30 and 12:00.
Is there any way to recover the data before truncate table with these material?
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Nov 20, 2009
Are there redo generate during truncate operation even my primary database is in FORCE LOGGGING mode? How this will effect on physical standby database.
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Oct 21, 2012
Any impact is there if is do the following:
ALTER TABLE MY_TABLE TRUNCATE PARTITION P1 UPDATE GLOBAL INDEXES;
will there be any lock on the table during this operation? DML operations will work without any issue or not?
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Jul 17, 2010
My requirement is to to truncate the table and load it with the data present in file. In the control file, I used the "TRUNCATE" command as well.In case, if the file has some invalid data and sqlldr fails, my existing data will be lost. Is there any option in which the sqlldr does not TRUNCATE the table in case of a failure.
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Jan 9, 2013
a material related to collections with Examples and also how to declare table type values.
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Aug 13, 2012
We have a table in the client database that has two columns - column parent and column child. The whole hierarchy of DB table dependencies is held in this table.If Report 1 is dependent on Table A and Table A in turn is dependent on two tables Table M and Table N. Table N is dependent on table Z it will appear in the db table as,
Hierarchy Table
Parent Child
Report1Table A
Table ATable M
Table ATable N
Table NTable Z
Requirement :
From the above structure, we need to build a table which will hold the complete hierarchy by breaking it into multiple columns.The o/p should look like this
-ParentChild 1Child 2 Child 3
-Report1Table ATable M
-Report1Table ATable N Table Z
Child 1, Child 2, Child 3 ....and so on are columns.The number of tables and the no of hierarchical relationships are dynamic.
SQL Statements to create hierarchy table:
create table hierarchy (parent varchar2(20), child varchar2(20));
insert into hierarchy values ('Report1','Table A');
insert into hierarchy values ('Report1','Table B');
insert into hierarchy values ('Table A','Table M');
insert into hierarchy values ('Table B','Table N');
insert into hierarchy values ('Report2','Table P');
insert into hierarchy values ('Table M','Table X');
insert into hierarchy values ('Table N','Table Y');
insert into hierarchy values ('Report X','Table Z');
Approached already tried :
1) Using indentation : select lpad(' ',20*(level-1)) || to_char(child) P from hierarchy connect_by start with parent='Report1' connect by prior child=parent;
2)Using connect by path function :
select *
from (select parent,child,level,connect_by_isleaf as leaf, sys_connect_by_path(child,'/') as path
from hierarchy start with parent='Report1'
connect by prior child =parent) a where Leaf not in (0);
Both the approaches give the information but the hierarchy data appears in a single column.Ideally we would like data at each level to appear in a different column.
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Mar 31, 2010
I want to do an import of a table from my old dump file.The same table is already there in the development box but few more columns are added to that table while testing so in the dump those columns are not available.
TABLE_EXISTS_ACTION=TRUNCATE
The new table
SQL> desc "TESTINVENTORY"."TTRANSACTION"
Name Null? Type
----------------------------------------------------------------------------------- -------- --------------------------------------------------------
TRANSACTIONIDNOT NULL CHAR(26)
BRANCHCODE NOT NULL CHAR(3)
EXTERNALSYSTEM NOT NULL CHAR(3)
EXTRACTSYSTEM NOT NULL CHAR(3)
OWNERBRANCHCODE NOT NULL CHAR(3)
TRADEREFERENCE NOT NULL CHAR(20)
[code]...
It giving error while doing an import.
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May 17, 2011
what is the advantage of Nested table ?
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