Migration of the apex of one schema to another in the same database

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• Need some ideas on the copy of the data from one schema to another.

  Dear all,
  
  I would like to know the best method and possible by copying data from one schema to another. (I won't use EXP / IMP).
  Example:
  
  
  I have a scheme of production on which I have hundreds of tables. I copy the data of the TEST environment after comparing data, I should copy the data incrementally.
  Maybe this copy of data may occur once a month, or on request.
  
  I want to have this done by a procedure.
  I was thinking about the logic below, using a procedure I will compare the tables and the structures between the two schemas.
  Then I willl use the primary key in both tables column and compare the data first. If the data if it does not exist then I only inserts these records in the target.
  The above said logic could be as similar as the synchronization of data or records, but the table does not all columns to track records archived / copied from the source.
  Suggest me so if you can give me the best logic or solution.
  
  Thanks in advance...
  
  Concerning
  Suresh

  GSKumar wrote:
  Dear all,

  I would like to know the best method and possible by copying data from one schema to another. (I won't use EXP / IMP).
  Example:
  I have a scheme of production on which I have hundreds of tables. I copy the data of the TEST environment after comparing data, I should copy the data incrementally.
  Maybe this copy of data may occur once a month, or on request.

  I want to have this done by a procedure.
  I was thinking about the logic below, using a procedure I will compare the tables and the structures between the two schemas.
  Then I willl use the primary key in both tables column and compare the data first. If the data if it does not exist then I only inserts these records in the target.
  The above said logic could be as similar as the synchronization of data or records, but the table does not all columns to track records archived / copied from the source.
  Suggest me so if you can give me the best logic or solution.

  I don't know why you don't want to opt for EXP/IMP.
  As an alternative, if you have a link DB between Production and Test pattern (which I seriously doubt), you can use the MERGER to a copy of data from Production to Test Delta.
  a. INTRODUCE IN test_schema.table_name SELECT sequence_columns, column_list FROM (SELECT column_list FROM prod_schema.table_name LESS SELECT column_list from test_schema.table_name)
  Column_list must not contain columns that contain sequence values because they may differ and result in an incorrect result; Therefore, this is taken into account in the outer query rather than Inline mode.
  b. MERGE STATEMENT
  c. FALL of test_schema.table_name. CREATE test_schema.table_name as SELECT column_list from prod_schema.table_name; -A way very neat to copy all the data, provided you do not keep any changes to test the tables in the schema.

  However, you mentioned to find existing records based on the primary key; IMO, primary key is normally a sequence (may be alphanumeric) and its value on env Production and Test may defer or even can have different attributes, therefore, I find it incorrect to match only the primary keys. I would say to match the key attributes.

  If you want to follow the last update/insert for a record, you can add a column that puts the time of last modification. In this way, you can track the changes of a column. Another alternative would be to use a check to the table.

  Let us know your thoughts or concerns, so that help can be provided.

  I suggest that you read and follow {message identifier: = 9360002}.
  If you will be useful if you can provide all the information required in advance to help us provide you with a quick resolution.

• Copy data from one schema to another. Reopen the Question

  Hello
  
  I had asked this question earlier to copy data from tables of one schema to another in the same database using the database link. In my previous post have mentioned below.
  

  Re: copy data from one schema to another.

  Now I am faced with the question for the remote copy of database
  
  I have created a DB connection between my local system and the remote database. with the chain of connection as shown below
  

  CREATE THE DATABASE PUBLIC LINK "MERU_DEV_LOCAL_DEV".
  CONNECT TO MERUDEV IDENTIFIED BY MERUDEV WITH THE HELP OF "MERUPROD";

  In the above script
  

  LOCAL DEVELOPMENT scheme IS
  REMOTE schema is MERUDEV

  I try to copy remote database to my local database tables using the script below.
  

  network_link DEVELOPMENT impdp = schema MERU_DEV_LOCAL_DEV = MERUDEV remap_schema = MERUDEV:DEVELOPMENT TABLE_EXISTS_ACTION = REPLACE

  But the copy of the table does not occur. What could be the problem? Please suggest me or do I need to modify the script
  
  Thank you
  Sudhir

  You can:
  -monitor the BONE with ps - ef
  -monitor data pump: jobs are dba_datapump_jobs and dba_datapump_sessions
  -monitor with logops: v$ session_longops

• The fastest way to copy one schema to another.

  Hi guys
  
  Oracle11gr2
  OEL 5
  
  I have a requirement to copy one schema to another. I don't have access to linux for the server hosting the database. So I guess that the datapump cannot be used. exp/imp conventional takes too long. Another way I can achieve the goal? What is the best way. is it possible to copy all the object using a dblink (triggers to tables, views, procedures etc.)
  
  PS: Both the schema are in the same database.
  
  Thank you
  Ankurk

  They are in the same database, so no db connection is necessary; Fatest? It depends on my factors;
  Why no loop all the sources of the tables in the schema and do;

  insert into target_schema.target_table
  select * from source_schema.source_table;
  

  You are 11 GR 2, datapump could be a solution...

  Directory user/pwd Impdp = DMP_DIR dumpfile = source_schema_dmp.dmp logfile = impdp.log remap_schema = source_schema:target_schema

• LKM to move data from one schema to another in the same DB

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  I created a mapping to move data from a table in Figure 1 to another table in Figure 2 (the two schemas in the same Oracle DB.

  What is the best LKM Oracle for performance to use in this case? Most of the LKMs using DB link... but is it really necessary that the two schemas are in the same DB?

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  Published by: Sven w. on June 28, 2012 15:04 - typo correction

  Sven wrote:
  Assuming that we have two processes on the same page, which are performed one after the other. Can we depend on that they are running within the same database session?

  For example it is possible to define a database (sys_context) context in the first process, and refer to this context within a second (e.g. process DML).

  Or asking in other words: is the session DB from the pool of connections apex reused or returned to the connection pool after the first process?

  The same session of database is used for the duration of 'see the page' or 'accept the page' request. If a 'direct branch' (direction of the page without using the redirect) takes place after "accept page" the same session of treatment, is used to display the new page. See the use attributes initialization PL/SQL/cleaning of Code PL/SQL Code .

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