Level lock table while truncating the partition?

Below, I use the version of oracle.

Oracle Database 11 g Enterprise Edition Release 11.2.0.2.0 - 64 bit Production
PL/SQL Release 11.2.0.2.0 - Production
CORE Production 11.2.0.2.0
AMT for Linux: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production

I have a script to truncate the partition as below. Is there a table-level lock while truncating the parition? Any input is appreicated.

ALTER TABLE TEMP_RESPONSE_TIME TRUNCATE PARTITION part1

>
Is there a table-level lock while truncating the parition?
>
No - it will lock the partition being truncated.

Is there a global index on the table? If so they will be marked UNUSABLE and must be rebuilt.

See the VLDB and partitioning Guide
http://Oracle.Su/docs/11g/server.112/e10837/part_oltp.htm
>
Impact of surgery Maintenance of Partition on a Table partitioned local index
Whenever a partition maintenance operation takes place, Oracle locks the partitions of the table concerned for any DML operation. Data in the affected partitions, except a FALL or a TRUNCATION operation, are always fully available for any operation selection. Given that clues them are logically coupled with the (data) table partitions, only the local index partitions affected table partitions must be kept as part of a partition maintenance operation, which allows the optimal treatment for the index maintenance.

For example, when you move an old score a level of high-end storage at a level of low-cost storage, data and index are always available for SELECT operations. the maintenance of the necessary index is either update the existing index partition to reflect the new physical location of the data or, more commonly, relocation and reconstruction of the index to a level of storage partition low cost as well. If you delete an older partition once you have collected it, then its local index partitions deleted, allowing a fraction of second partition maintenance operation that affects only the data dictionary.

Impact of surgery Maintenance of Partition on Global Indexes

Whenever a global index is defined on a table partitioned or not partitioned, there is no correlation between a separate partition of table and index. Therefore, any partition maintenance operation affects all global indices or index partitions. As for the tables containing indexes, the affected partitions are locked to prevent the DML operations against the scores of the affected table. However, unlike the index for the local index maintenance, no matter what overall index remains fully available for DML operations and does not affect the launch of the OLTP system. On the conceptual and technical level, the index maintenance for the overall index for a partition maintenance operation is comparable to the index maintenance which would become necessary for a semantically identical DML operation.

For example, it is semantically equivalent to the removal of documents from the old partition using the SQL DELETE statement to drop old partition. In both cases, all the deleted data set index entries must be removed to any global index as a maintenance operation of normal index that does not affect the availability of an index to SELECT and DML operations. In this scenario, a drop operation represents the optimal approach: data is deleted without the expense of a conventional DELETE operation and the indices are maintained in a non-intrusive way.

Tags: Database

Similar Questions

  • modify an existing table to selectively the partition interval range

    I'm using Oracle 11.2.0.3.

    I have an existing table that has parition interval range.

    example:
     
    create table Log( ts date, level  varchar2(20), scr varchar2(2000))PARTITION BY RANGE (TS)
    INTERVAL( NUMTODSINTERVAL(1,'DAY'))
    Currently, we have the log of the table that is the partition of the range by day and we drop old parition to a week. However, we want to change this to persist the records in the table of WHICH = LEVEL "IMPORTANT."

    What is the best way to achieve this?

    >
    Is it possible to modify the existing interval partition table to add partition in the list?
    >
    Only using the DBMS_REDEFINITION to do online. And that always involves the creation of a "provisional" table

    If you have a window of failure just to create a new partitioned table the way you want to and INSERT the data into it. You should be able to use a DEC to do if you want. You may not use swap partition since all data must be physically moved.
    >
    Can we do list-interval partition table i.e. (with partition interval as partition sup)?
    >
    No - subpartitioning of interval is not currently supported.

    Here is the code example of a partitioned table by using the RANGE-interval LIST. It uses a VIRTUAL column, but you can ignore it for your use case

    DROP TABLE mytable;
    
    CREATE TABLE mytable
    (
    CREATION_DATE TIMESTAMP(6),
    LAST_MODIFIED_DATE TIMESTAMP(6),
    CREATION_DAY NUMBER(2) GENERATED ALWAYS AS (TO_NUMBER(TO_CHAR(CREATION_DATE, 'DD'))) VIRTUAL
    )
    PARTITION BY RANGE (LAST_MODIFIED_DATE) INTERVAL(NUMTOYMINTERVAL(1, 'MONTH'))
    SUBPARTITION BY LIST (CREATION_DAY)
       SUBPARTITION TEMPLATE
       ( SUBPARTITION days_1_5 VALUES (1,2,3,4,5)
       , SUBPARTITION days_6_10 VALUES (6,7,8,9,10)
       , SUBPARTITION days_11_15 VALUES (11,12,13,14,15)
       , SUBPARTITION days_16_20 VALUES (16,17,18,19,20)
       , SUBPARTITION days_21_25 VALUES (21,22,23,24,25)
       , SUBPARTITION days_26_31 VALUES (26,27,28,29,30,31)
       )
    (
       PARTITION prior_to_2013 VALUES LESS THAN (TO_DATE('2013-01-01', 'YYYY-MM-DD'))
    )
    
  • How to find level locks table

    Oracle APPS R12

    Hi all

    How to determine the table level locks in oracle Apps R12. When I run my simultaneous program its taking too much time to complete, and two or three concurrent programs are running in parallel and taking the same base table data, so how to find the locks if it is on the table. Any help is highly appricatable.


    Thanks and greetings
    Srikkanth.M

    Hello

    How to determine the table level locks in oracle Apps R12.

    Please see old similar threads.

    Table locks
    http://forums.Oracle.com/forums/search.jspa?threadID=&q=table+locks&objid=C3&DateRange=all&userid=&NumResults=15&rankBy=10001

    When I run my simultaneous program its taking too much time to complete, and two or three concurrent programs are running in parallel and to the same base table data

    Are these concurrent programs custom or seeded? You're correctly concurrent managers? Please see these documents for more details.

    A comprehensive approach to the performance of Oracle Applications systems [ID 69565.1]
    What is the size of "Cache" recommended for a Manager Standard [ID 986228.1]
    Troubleshooting problems of performance in the Oracle Applications / E-Business Suite [ID 117648.1]

    Thank you
    Hussein

  • remove the level 0 division, while retaining the level 1 totals

    I would like to eliminate any division of level 0 (from this particular tree) but would retain the totals at level 1 and level 0 would. How can I do this? for example

    Company 1
    Sub has
    Sub B
    Sub C


    I want to delete Sub A, B Sub and Sub C, but keep company 1 and all data. If I just delete the submarines, nothing will be in company 1 because they are additive. all are set apart ever.

    Are you talking about a database of ASO or OSB?

    If ASO, you need to get out somehow this data value 1 company, remove members and then load value of company 1 on itself. This is because a cube ASO does not store the data at all levels except level 0.

    If the OSB and you have aggregted the databsae, what makes you think that there will be a data value 1 company? This can often be sen as a curse, not a blessing and goes under the name of "ghost". It can be quite a pain in the you-know-what to identify these data points if a massive deletion occurred but the top-level regrouping numbers do not change.

    Kind regards

    Cameron Lackpour

  • Failed to truncate the target table while programming the interface in ODI

    Hi Expertise,

    I developed a scenario in an interface, where I planned keeping the option Truncate as false, right there the data is been going to target without any problems, but when I changed the status of truncate to TRUE, the interface is been run, but the array is not get truncated, rather the data's been loading again to target. (when running manually, the target table is been truncated perfectly) but not in programming.

    Can someone help me in this problem.

    Thank you

    Shakur.

    Have you regenerate the scenario in question since you changed the option Truncate. If you have not the regular job must still run the old code

  • How to recover the partition table (corrupt) for the partition in good health?

    Partition (drive H) was working fine, then I rebooted my system normally and the drive is now inaccessible.

    "An error occurred reading the file: the file or directory is corrupted and unreadable." (1392).

    Window CMD CHKDSK says NTFS file system and "unable to determine the State and version volume.»

    [This is a disk external drive with 2 partitions on it - H and Mr. the second partition (drive M) discs works fine.]
    [Vista Ultimate OS]

    Is there a way I can get it to work or get the data off of it?

    Try the procedure described in the article below

    http://www.ehow.com/how_7500292_recover-bad-partition-table.html

  • Restore the partition table data

    Hello


    DB 10.2.0.1

    I have a dump file in which exported the data from a table to a database. This table is based partioned. I have imported into the database B. I have truncated or tried successively to the partition of the table in database B now I want to import the data from the export dump file in the same table. I don't want to import the data again for all partitions. I want to just import only truncated how data I could do?

    Thank you

    Hello

    Even I did as you say, but we give below error.

    In fact, it is not an error message:

    Import completed successfully without warnings.

    You have SQL code contained in the "dump":

    CREATE TABLE 'TRADING_TEST' ("BRAND_DESCRIPTION' VARCHAR2 (120)...)

    For example, you may notice that importation will try to recreate the Table of TRADING_TEST with all its partitions. Of course, it will generate an error and you will not be able to import the data in the Partition. Unless you have just TRUNCATE and you use the parameter IGNORE = Y.

    So, if you TRUNCATE the Partition you do not have to recreate.

    If you DROP the Partition, it is best to recreate first (ALTER TABLE ADD PARTITION...).

    Then import you the datas like that (I just add IGNORE and LOG settings):

    imp system/password file=C:\exportTable32\table.dmp FROMUSER=dev touser=system tables=(TRADING_TEST:A15) ignore=y log=C:\exportTable32\table.log
    

    However, I hope that it is just for test purpose, because it is not recommended to create the user Tables in the SYSTEM.

    Hope this helps.
    Best regards
    Jean Valentine

  • Problem with external HARD disk - cannot mount the mac partition and can't unmount the partition windows

    Hi all

    Need your help. I have problems with my external hard drive. I worked on it yesterday when the cable is a little detached and disassembled my intestinal HARD drive.

    Here are the specs:

    1 Macbook Air 11.5 "running on El Capitan (10.11.1)

    2 Buffalo Ministation external (1 TB) HARD disk divided into two: a Mac partition (for time machine) and the other a windows on FAT32 partition.

    Before the accident yesterday, it was working OK.

    Now, when I connect the HARD drive, it turns on but the Mac partition cannot be mounted (it does not appear on the Finder. I opened disk utility... just load forever and does not work) and the Windows partition is visible... but I can't take it apart without turning my computer.

    I can assemble and disassemble a USB stick very well.

    Any help would be appreciated.

    Thank you!

    Maybe you can explain a little better.

    I would like to make some general comments before having your replay.

    It is not wise to use TM on a disk with apple unformatted or partitions, it is preferable to have a dedicated TM drive also.

    For TM, the rule is that the drive is about 3 times the size of the boot disk.

    Normally you 'survive' a good step disassemble the drive external, but in this case with a another partition formatted on this subject, I'm not sure if that do not corrupt the disk, especially since the Windows partition is bootable. I have suspct the partition GUID on the TM partition table is corrupt.

    I propose to start the disk completely: in DiskUtility select the 'higher' level (name of manufacturer) and the Partition, one OS X Extended (journaled) partition table Partition GUID. And use it only for TM, is not too big for this.

    Have another drive formatted NTFS for Windows.

  • Calculate the space used by an individual/idebtifying partition in the partitions belonging to a partition - possible?

    Hello

    Using oracle 11.2.0.3 and have a partitioned table, some of the partitions use their own tablespace for to use WHERE user_segments but many partitions share the same tablespace.

    We wish to place each partition to a tablepsace of dedicatde and seek to identify the space used by a single partition.

    What is the best way to do this?

    See user_tatb_partitions ha snum_rows + blocks.

    Can see WHERE user_segments door secondary partition names.

    Is that a query can use for secondary idnentify belonging to a partition

    Thank you

    See halfway down the page below for SQL XML util to convert a string of high_value.

    http://OraStory.WordPress.com/2013/12/12/SQL-utils-using-XML/

  • Use of the partition in select query

    Hello friends,

    I have a table in which the partitions are created on the date field, so for the month of February, I have 28 scores. Now I want to select records in more than one partition, may come from a range of partitions?

    How can I do? I want to avoid things like

    Select * from table_1 partition (p_01_feb_2014)

    Union of all the

    Select * from table_1 partition (p_02_feb_2014)

    Thank you

    As suggested by other members of the forum

    Use can use the date_column > 31 January 2014 ' and date_column< '01-mar-2014'="" in="" where="">

    You can also see this query plan to understand in detail how to find oracle table data.

    EXPLAIN PLAN FOR

    SELECT * FROM TABLE_1 WHERE DATE_COLUMN > 31 JANUARY 2014 ' AND DATE_COLUMN<>

    SELECT * FROM TABLE (DBMS_XPLAN. DISPLAY);

  • Update of the partition table and update rank with php.

    Hello

    I have a partition table on my site which is

    Scores: id - userid - ranking - points-

    Get points for doing things while using the site users. Points are updated, but I don't know how

    to update this user's position by comparing everyone elses points and rank numbers update

    based on the users with most points in php.

    Hope you can help. Thank you

    Weird, the link I provided is not what I wanted; It seems very different and is difficult to read. Anyway, you don't mention what goes wrong with the code you provided. I also don't think that you want to prepend rank alias with the table name 'notes' because it is not a table column. I do not use MySQL, but I think you want to use ' @' for your SQL local variables, so something like:

    $sqlgo = mysql_query ("SET @rank = 0; SELECT @rank: = @ row + 1 rank Users.id, Users.username, Users.profilepic, Scores.scoreid, Scores.userid, Scores.level, Scores.points, rank, Scores.badges OF Scores INNER JOIN users ON Scores.userid = Users.id ORDER BY invoking DESC LIMIT 30 ");

  • Problem with the compatible version of line lock tables

    I tested the effect of locking in the tables in activated version to assess restrictions workspace manager to update the records in different workspaces and I met a locking issue where I can't seem to update different registers of the same table in different sessions if these same records have already been updated and committed in a different workspace.

    I run the tests on 11.2.0.3.  I have ROW_LEVEL_LOCKING worth IT.

    Here's a simple test case (I have many other test cases that are not as well, but understand why it is a problem of blocking will help me understand the results of others my test case):

    -Alter tablespace names in accordance with the requirements

    create table t1 (id varchar2 (36) not null, name varchar2 (50) not null) tablespace XXX;

    ALTER table t1 add the key primary t1_pk (id) of constraint using index tablespace XXX;

    exec ('LIVE') dbms_wm.gotoworkspace;

    insert into t1 values ('1 ', 'name1');

    insert into t1 values ('2 ', 'name2');

    insert into t1 values ('3 ', 'name3');

    commit;

    exec dbms_wm.enableversioning ('t1');

    exec ('LIVE') dbms_wm.gotoworkspace;

    exec dbms_wm.createworkspace ('TESTWSM1');

    exec dbms_wm.gotoworkspace ('TESTWSM1');

    -Update 2 files in a workspace not LIVING for the update later in different workspaces

    Update t1 set name = name | ' changed ' where id in ('1 ', ' 2');

    commit;

    quit smoking;

    -Now in a separate session (called session 1 for this example), run the following without commit the changes:

    exec ('LIVE') dbms_wm.gotoworkspace;

    Update t1 set name = 'modified' where id = '1';

    -Now in another session (session 2) update a different record in the same table.  The update below is blocked waiting on the transaction in the session 1 to perform (by commit / rollback):

    exec ('LIVE') dbms_wm.gotoworkspace;

    Update t1 set name = 'modified' where id = '2';

    I am surprised, recordings of the different IDS cannot be updated in different sessions which is why is session 1 blocking the update of the 2 folder that is not being updated anywhere else.  I tried this using different workspaces not LIVING with similar results.  I tried to change the properties of the table for example, initrans with and always get a lock.  Changes made to the properties of the table are correctly propagated to _LT tables but not all tables in handler related workspace created for table T1 that precedes.  I don't know if that's the problem.

    Note an example of the query Manager space background likely to create the lock is something like:

    UPDATE TESTWSM. T1_LT SET LTLOCK = WMSYS.LT_CTX_PKG. CHECKNGETLOCK (: B6, LTLOCK, NEXTVER,: B3, 0, 'UPDATE', VERSION, DELSTATUS,: B5), NEXTVER = WMSYS.LT_CTX_PKG. GETNEXTVER (NEXTVER,: B4, VERSION,: B3: B2, 683) WHERE ROWID =: B1

    Any help with this will be appreciated.  Thanks in advance.

    Hello

    The reason for the block is actually the same as above.  The splits is registered at the level of the version/savepoint, not necessarily just the workspace.  In your example, workspaces TESTWSM1 and TESTWSM2 have a single version and the LIVE workspace has 3 versions.  A new version is always implicitly created during a CreateWorkspace operation if the most RECENT/current version has modified data.  The lines for the id = "1" and id = "2" are changed in each workspace to the child and before creating a workspace.  However, since the id = "3" LIVE online has changed after the creation of TESTWSM1, it is in a different version of those other 2 rows.  So when the updates for the id = "1" and id = "2" are executed, the line is attempted to be divided between TESTWSM1, TESTWSM2 and the latest version of LIVE.  No other line has been updated with this combination so we try to introduce a set of lines in the metadata table.  As this happens multiple sessions at the same time, one of them is obliged to block until the other transaction issues a commit or rollback.

    It is not a way to avoid these LMD.  The lock is acquired in this case is a short-lived transaction lock and they are required for the correct rows be returned for a particular workspace.

    Kind regards

    Ben

  • Index rebuild required after truncate the table and load data

    Hello


    I have a situation that we truncate tables bit and then we loaded data [only content] on these tables. What you need to rebuild the index online is necessary or not?


    And another question is if we drop a few clues is the total amount of space is released or not. And re-create indexes will use the same amount of space. As I don't have disk space more? In this situation, rebuild the index online will be a better idea...

    Can you please on this...


    truncate the table some the few loading tables + reconstruction markings online is the best (or) droping little tables, a few tables loading + re-create the index is better

    Can you suggest the best way... We have a time that it currently we don't have enough space on the disk... [Option should not effect the space]

    user13095767 wrote:
    Ok. I have it...

    u want to say if we disbale the index while loading... Next, we need to spend the time to build.

    If the indexes are enabled, then rebuild again is not necessary after loading tables...

    Please answer if my understanding is correct...

    above is correct

    >

    If so, how abt the differences in the space occupied by the spaces of storage during the index rebuild and re-create... T he acquires more space if recreate us [deletion and creation] or rebuild online is preferable to an index...?

    space used is the same for all options.

  • Problem with trunacating the partitions of a table.

    Hi all

    I have a table partitioned, called temp1_list_cmpgn_hist_dtl, and it is partitioned by month (campaign_start_date).

    I tried, queries
    TRUNCATE TABLE temp1_list_cmpgn_hist_dtl PARTITION t_list_cmpgn_201006
    TRUNCATE TABLE temp1_list_cmpgn_hist_dtl PARTITION t_list_cmpgn_201006 REUSE STORAGE

    but it throws me the following error message:
    SQL error: ORA-03291: Invalid truncate option - missing keyword STORAGE
    03291 00000 - "invalid truncate option - missing keyword STORAGE"
    * Cause: Keyword STORAGE planned
    * Action: Specify DROP STORAGE or reuse STORAGE

    Also, I'll try to find the nom_partition for the 'temp1_list_cmpgn_hist_dtl' table, but it shows not all partitions, although there are partitions.
    I tried the query,
    SELECT Nom_partition from user_tab_partitions WHERE table_name = 'temp1_list_cmpgn_hist_dtl '.

    THX,
    Rod.

    You cannot truncate individual partitions of a table. The closest you could come would be to do a swap partition with an empty table created to match your partition.

    Also, I'll try to find the nom_partition for the 'temp1_list_cmpgn_hist_dtl' table, but it shows not all partitions, although there are partitions.
    I tried the query,
    SELECT Nom_partition from user_tab_partitions WHERE table_name = 'temp1_list_cmpgn_hist_dtl '.

    All the names of objects in the Oracle database, by default, are stored in uppercase letters, so make sure the upper case of the table name.

    John

  • Numbers: How lock the table without blocking the ability to edit what is inside?

    everything in the title

    Thank you

    Hi Berendirih,

    Is not possible. The lock table prevents changes to the table and its contents.

    Whenever possible, you should separate entry and calculations on their own tables. Lock tables calculation in order to protect the formulas. Leave unlocked data input tables to allow data entry.

    Kind regards

    Barry

Maybe you are looking for

  • Disc SSD on Qosmio F60

    Is there room on the drive, an SSD drive in my laptop, Qosimo F60 Thank you

  • Addition of new global variables

    I change code that uses one or more global variables in a global folder of vi. I would like to add a few variables more and potentially change what exists and ask them to be in the same globals vi. I can easily add a variable of the same type by copy

  • Unable to add music files to WMP 11 rocket?

    When I try to add my music files to 'Add to library' in WMP 11, I get this message "the my 8G\Internal folder to Fuze Memory\Music ' is not found. It can be located on an unavailable volume or protected with a password. Change the folder and try agai

  • How to restore the LH of options box in the paint

    LH showing options in the paint box is not visible. How can I restore it

  • Can't install updates - error 800700c code

    original title: 800700c error code trying to update my computer.  I get windows error code 800700C and it will not be updated.