Why performance degrades overtime when insert/update/delete VARBINARY?

Similar Questions

• Insert, update, delete

  If I have a cfquery with the data name and relevant source etc. then the sql will be the same for:
  
  1 insert, update, delete with mysql and mssql?
  2. trade unions and different joins for mysql and mssql?
  
  Thank you!

  When you compare two db, it is reasonable to assume that they will behave the same if you stay plain vanilla sql and that there will be at least a difference when it comes to features.

• The separate display - process success Message - for INSERT/UPDATE/DELETE

  Hello
  
  When we either Insert/update/delete records of shape of the APEX, it fires the Page - processing of automatic line (DML) process and displays the following message - process success Message
  
  -File has been processed.
  
  Is there a way for each of them, we can change this message...
  I mean, if the creation of a new record - message should be - record has been created... his way... If update... * manual has been updated *... and so on...
  
  Thank you
  Deepak

  Hello

  One way is to create a component hidden from this page and calculation value according page submit the request.
  for example if the application is updated then the item value record has been updated.

  Then put this point to the message of successful treatment of automatic line (DML) as & Px_YOUR_ITEM.

  Hope this helps

  BR, Jari

• Insert, update, delete logging

  Hi friends
  I have insert, update, delete the table from the journal as
  
  TableName, rowname, date, user, type of operation
  
  for example, user delete a line, I see in my journal but sometimes I want to deleted data in rows.
  with oracle do we find data?
  or
  We can find data another way?

  Look at this example, hope you understand the question

  SQL> create table my_tab (id number, name varchar2(20));
  
  Table created.
  
  SQL> create table log_my_tab (old_id number, new_id number, old_name varchar2(20), new_name varchar2(20));
  
  Table created.
  
  SQL> create or replace trigger trg_test
  after insert or update or delete on my_tab
  for each row
  begin
  if updating then
  insert into log_my_tab values(:old.id, :new.id, :old.name, :new.name);
  end if;
  end;
  /
  
  Trigger created.
  
  SQL> select * from my_tab;
  
  no rows selected
  
  SQL> select * from log_my_tab;
  
  no rows selected
  
  SQL> insert into my_tab values(1,'Kamran');
  
  1 row created.
  
  SQL> update my_tab set id=2,name='Agayev' where id=1;
  
  1 row updated.
  
  SQL> select * from log_my_tab;
  
      OLD_ID     NEW_ID OLD_NAME             NEW_NAME
  ---------- ---------- -------------------- --------------------
           1          2 Kamran               Agayev
  
  SQL>
  

  As see you in this example, I create two tables, a main table and another table of newspaper. But in addition I create a trigger to track updates and insert old and new values to the log table

  - - - - - - - - - - - - - - - - - - - - -
  Kamran Agayev a. (10g OCP)
  http://kamranagayev.WordPress.com

• using postings in insert/update/delete

  Hello all;
  
  I'm so confused right now... I have read several articles on this subject and I don't know who is good or bad
  
  If an update statement is written in a client front-end as asp.net, must hire us or not, or should leave us it to auto-commit
  This scenario applies with an insert as well

  If you ask from the point of view of determining what is best practice

  Autocommit is evil and should be avoided at all costs. Unless you really, really, really understand what you do, a request that autocommits will end up with data in an inconsistent state. Unless the developers are extremely cautious, a page that allows you to transfer money from one account to another, for example, eventually sending statements to withdraw money from an account and drop it into the other and autocommit will cause to commit inadvertently withdrawal when filing statement fails.

  If you ask from the point of view of what are the technical requirements

  If you are in the mode autocommit, it is useless to engage in explicitly all the instructions (of course, you also won't be able to restore all the instructions explicitly)
  If you disable auto-commit mode, you will have to validate each transaction explicitly. After all never transactionally consistent of the DML statements (INSERT, UPDATE, and DELETE), you will need to do a commit explicit or an explicit rollback. In the example of transfer of account, you would hire after that withdrawal and the filing of declarations had been executed successfully. When you close a connection, your frame can do an implicit validation or cancellation (it depends on the frame) but who should not be trusted.

  Justin

• Insert, Update, Delete on a partition table not even at a time

  Hello
  I have a non-partitioned table on which inserts, updates and deletes come at the same time due to which I am facing problem of contention.
  What would be the ideal solutions to solve my problem (deletion conflict.)
  
  Thank you
  Badin

  Can you give us more details on the "problem of contention"? This could mean a very large number of different things.

  You have different sessions simultaneously update the same row in the table, for example? If so, you probably need to look at the architecture of the application to avoid multiple sessions to the same line at the same time setting, or you would need to look at the data model to avoid multiple sessions to update the same line at the same time setting.

  But there could be dozens of other kinds of claim that you could talk.

  Justin

• Restrict the insert, update, delete the other user table

  I created a new database user. I have granted the privileges system into a TOAD.

  • Select any table
  • alter any table
  • delete a table

  I found that account can select, alter, drop table arrays of other schema. So how I can limit the which account to modify, remove only its tables belonging and select table of all the schema?

  Is there the ALTER table, ALTER view, ALTER procedure, ALTER synonym, DROP table, DROP view, DROP procedure, DROP synonym system privileges? How can I grant it without ANY system privileges?

• Someone he wrote routines for insert/update/delete for records of MySQL?

  I prefer not to use Spry or other methods of third parties.  I'm comfortable with coding, so this isn't a problem.  Thank you!

  => is used to assign a value to a key of the associative array, like this:

  $fruit = array ("apple"-online "braeburn", "pear"-online "bartlet");

  -> is used in OO to take an action on an object. That's my definition of on-the-fly. On the left is the name of the object and on the right is what to do. For example, you can set of a property or a method running.

  In the login script, there is no need even to understand what is happening. Just set the variables in the first three lines... then, your queries must always refer to the connection object. Since I use $dbh under the name of connection object, a query would be like this:

  $sql = $dbh-> prepare ("SELECT * FROM fruits WHERE fruit_type =: fruit_type");
  $sql-> bindValue ("fruit_type", "apples");
  $sql-> execute();

• Component ODI OWB 11 GR 2 How to connect lines inserted/updated to update / delete

  Hi experts,
  I developed an ICT KM which will insert into a target table data line-by-line, I used the ICT_SQL_INCR_UPD_ROW_BY_ROW KM of base provided by oracle, what I noticed, is that this newspaper does not work lines that are inserted as other KMs, after that a little research on the internet discovered that ODI has a function for this , oidRef.setNbInsert, but this doesn't work in OWB KM, it gives this error:
  --------------
  Traceback (innermost last):
  "< String >" file, line 305, inside?
  AttributeError: setNbInsert
  [12: 02:05] Szabo Adorian: org.python.core.Py.AttributeError (Py.java)
  org.python.core.PyInstance.invoke (PyInstance.java)
  org. $0 Python.pycode._pyx64.f (< string >: 305)
  org. Python.pycode._pyx64.call_function (< string >)
  org.python.core.PyTableCode.call (PyTableCode.java)
  org.python.core.PyCode.call (PyCode.java)
  org.python.core.Py.runCode (Py.java)
  org.python.core.Py.exec (Py.java)
  --------------
  
  Dose - anyone have an ideea how can I connect the inserted, updated, deleted in interface OWB lines (we have a customer who would like tho have this feature)?
  
  Enjoy a quick response,
  CIPI

  Hi CIPI

  Unfortunately, it is not included, the only possible audit for lines is via JDBC and properties explanations in KM.

  So not every API of ODI is supported, a large common subset is available, you can see the doc for more details (these audit would be useful);
  http://download.Oracle.com/docs/CD/E11882_01/OWB.112/e10935/code_tempates.htm#CIHIIJDI

  See you soon
  David

• user who has the rights to select/insert/update

  I want to know what user has select, insert, update, delete, run, rights on the tables of the ERP.
  
  concerning

  oracleRaj wrote:
  I want to know what user has select, insert, update, delete, run, rights on the tables of the ERP.

  concerning

  Mark from dba_tab_privs according to the table of ERP

• Why sites keep telling me to update my browser when it is already updated? Example - what happens when I try to access my e-mail and other sites.

  Why sites keep telling me to update my browser when it is already updated? I already updated my browser and even tried to reinstall. Example - what happens when I try to access my e-mail and other trusted sites.

  Hello

  Some Firefox problems can be solved by performing a clean reinstall. This means that you remove Firefox program files, and then reinstall Firefox. Please follow these steps:

  Note: You can print these steps or consult them in another browser.

  1. Download the latest version of Firefox from http://www.mozilla.org office and save the installer to your computer.
  2. Once the download is complete, close all Firefox Windows (click on quit in the file menu or Firefox).
  3. Remove the Firefox installation folder, which is located in one of these locations, by default:
     • Windows:
       • C:\Program Files\Mozilla Firefox
       • C:\Program Files (x 86) \Mozilla Firefox
     • Mac: Delete Firefox in the Applications folder.
     • Linux: If you have installed Firefox with the distribution-based package manager, you must use the same way to uninstall: see Install Firefox on Linux. If you have downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
  4. Now, go ahead and reinstall Firefox:
     1. Double-click on the downloaded Setup file and go through the steps in the installation wizard.
     2. Once the wizard is completed, click to open Firefox directly after clicking the Finish button.

  Please report back to see if this helped you!

  Thank you.

• With the help of Merge for Update, Insert, Update and also to delete outdated records

  Hi all!!!
  
  Suppose that a credit memo the following table called Orders:
  

  ORDERID        STATUS      PRICE 
  ---------- ---------- ---------- 
           1          0        100 
           2          0        200 
           3          0        300 
           4          0        350 
           5          0        390

  In addition, there are a procedure that will generate data on a global temporary table, called Orders_Temp. This temporary table will be used to update the Orders table. + commands + have a trigger that will perform different operations when an Insert, Update, or Delete command is executed.
  
  Consider the table of Orders_Temp to have the following data after you run a procedure that is responsible for the update of order data:
  

  ORDERID        STATUS      PRICE 
  ---------- ---------- ---------- 
           1          1        100 
           2          2        200 
           3          0        300 
           5          0        390 
           6          0        350

  As you can see, orders 1 and 2 have been updated. Order 3 and 5 were intact, order 4 has been deleted and command 6 inserted. Fusion will take care of properly manage orders 1, 2, 3, 5 and 6, although producing an update of order 3 and 5, which have not changed.
  
  So, here are the questions:
  (1) how could remove the 4 arrestedorder, as this order was not present on Orders_Temp? Is it possible to use the merge command to do this?
  (2) is it possible to generates not a update operation for orders of 3 and 5, which have not changed?
  
  I m using Oracle 10.2 SE.
  
  Thank you very much!
  Regis

  Hello

  Please try this. Not tested! with 9i. I think you can do this by using the union all.

  MERGE INTO orders tgt
   USING (SELECT A.*, 1 mask
            FROM orders_temp A
          UNION ALL
          SELECT A.*, 0
            FROM orders A
           WHERE NOT EXISTS
                   (SELECT 1
                      FROM orders_temp b
                     WHERE A.order_id = b.order_id)) src
      ON (tgt.order_id = src.order_id)
  WHEN MATCHED
  THEN
    UPDATE SET tgt.status = src.status, tgt.price = src.price
       WHERE src.mask = 1
         AND tgt.status != src.status
         AND tgt.price != src.price
    DELETE
       WHERE src.mask = 0
  WHEN NOT MATCHED
  THEN
    INSERT VALUES (src.order_id, src.status, src.price)
  

  or you could try to use a full outer join and treat NULL values.
  G.

  Edited by: g. March 8, 2011 11:17

  changed to the Union all the

• What happens when you insert/modify/delete a row in a table - concepts

  I am trying to understand the below concepts regarding the internal concepts (for example, undo and redo)

  (1) what is happening in the database when you insert a row in a table?

  (2) what is happening in the database when you update a row in a table?

  (3) what is happening in the database when you remove one line in the table?

  I have read the oracle documentation and mistook the redo and undo behavior. It would be great if someone explains the concept in a simple way.  I'm a novice programmer to understand database concepts. Any help would be much appreciated.

  INSERTIONS and deletions are handled the same way.  The cancellation of an INSERT is a DELETE.   The cancellation of a REMOVAL is an INSERT.

  Therefore, the generation 'Cancel' for INSERTION is less than that of a DELETION (because the cancellation of a DELETION is to reinsert the line - the value of each column in the row must be captured in the undo).

  If restore you an INSERT, then Oracle executes effectively a DELETE tablename WHERE rowid =... rowid_that_was_inserted.  A cancellation for an INSERTION is 'rapid '.

  If restore you a DELETION, then Oracle executes effectively an INSERT tablename values (col1, col2, coln).  The cancellation of a DELETION takes more time because Oracle would have to re-enter the values.

  Remember that Oracle also captures the redo to undo it (and do it again for the price drop if you do a restore).

  Hemant K Chitae

• Can I use shrink for an asset (perform insert very-delete operations) table

  Hello guys,.
  
  I have a very simple question. According to an article (link: http://www.dba-oracle.com/t_automatic_segment_space_management.htm) the following quote is written
  

  Beware:  Using ASSM can hinder database DML performance, and most Oracle experts will use manual freelists and freelist groups.  Click here for details on automatic segment space management internals.
  
  Using automatic segment space management is great for almost all Oracle applications, with the exception being super-high update tablespaces, which would use traditional freelists with multiple freelist groups.

  I just want to use shrink my table in order to reclaim the unused space. However, I play a lot insert and delete operations on the table (not update, insert and delete). So, I wonder, if I use shrink, my table will affect seriously? Because I insert and remove thousands of rows in this table every day.
  
  
  And my second question is how can I know that my table is in SAMS (automatic segment space management) to use retractable? Because I was told that my table shoul be in SAMS to use retractable?
  

  select * from v$version;

  Oracle Database 11 g Enterprise Edition Release 11.2.0.1.0 - 64 bit Production
  PL/SQL Release 11.2.0.1.0 - Production
  "CORE 11.2.0.1.0 Production."
  AMT for 64-bit Windows: Version 11.2.0.1.0 - Production
  NLSRTL Version 11.2.0.1.0 - Production
  best regards
  Charlie

  970992 wrote:
  I just want to use shrink my table in order to reclaim the unused space.

  Ok. You are sure that there is some unused space and that Oracle will not reuse space automatically? If you are constantly inserting and removing a table, unless you remove constantly more data that you insert or you use direct-path inserts to prevent Oracle to reuse the space freed by deletions, there is no reason to believe that there is unused space in the table.

  However, I play a lot insert and delete operations on the table (not update, insert and delete). So, I wonder, if I use shrink, my table will affect seriously? Because I insert and remove thousands of rows in this table every day.

  Thousands of lines is enough little activity.

  If you want to shrink the table, you generally want to do while there is little or no activity on the table since you will need to at least briefly to acquire a lock on the table. If you do only a few thousand a day race DML operations, it shouldn't be difficult to find a window where the shrink will not be a significant impact on DML.

  But, back to my first point, I would tend to wait that you don't need to shrink the table in the first place.

  And my second question is how can I know that my table is in SAMS (automatic segment space management) to use retractable? Because I was told that my table shoul be in SAMS to use retractable?

  Assuming that you know what the table tablespace is in

  SELECT segment_space_management
    FROM dba_tablespaces
   WHERE tablespace_name = <>
  

  Justin

• Files size columns pane does not update when files are deleted

  Version of Thunderbird 38.4.0 day the "Total"-column, when files are deleted, but the column "size" in unchanged.»

  I use the 'size' as you mentioned above to remind myself to keep my records.

  When you delete a message, it is "marked as deleted" and from your point of view, it disappears from the eg: Inbox and moves to the folder "Deleted/trash".

  In reality, it's still in the Inbox, looks and "marked as deleted.

  This makes it much easier to retrieve a message deleted if made in error.

  To remove all traces of messages "marked as deleted", you need to compact your folders.
  Right click on "Inbox" and select "compact".

  Or do all the folders 'file' > 'Compact '.

  You will also notice that when you empty the "Junk" folder, it also still shows a size until you compact the fodler.

  Compaction, it's something, you should do regularly especially on the Inbox and Junk folders as they propbably make the most of the activity when it comes to deletion.
  Compaction is a way to keep your files and to create a space.

  If you were not compact, then it is advisable to create abackup first, just in case there is a hidden file corruption.

  More info on:
  How to keep your health thunderbird:

  • http://KB.mozillazine.org/Keep_it_working_%28Thunderbird%29

  Compaction - what it does and why it is important.

  • _ http://KB.mozillazine.org/Thunderbird: _Tips_:_Compacting_Folders

  Backup:

  • http://KB.mozillazine.org/Profile_backup