SQL & PL/SQL :: Refreshing Schema From One Database To Another
Jul 10, 2012
I am often tasked with refreshing schema's from one DB to another.The first thing I need to check is the space the objects take up in the source DB. SQL statement that prints the size of the following objects
I have a list of materialized views in schema A. I want to create a refresh group and then refresh it from Schema B (Dynamically-run time based on some criteria). What Grants are necessary on schema B in order for it to be able to create and refresh the groups on Materialized views in Schema A.
I know that one of the Options is to, GRANT ALTER ANY MATERIALIZED VIEW as a SYS user. But I do not have any SYS privileges.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options Master table "MVANMANNEKES"."SYS_IMPORT_SCHEMA_01" successfully loaded/unloaded Starting "MVANMANNEKES"."SYS_IMPORT_SCHEMA_01": mvanmannekes/******** schemas=cmsstagingb remap_tablespace=cmsliveb_data:cmslivea_data
move the tables with data present in the user scott(full) to another schema named test. In my case scott is in user tablespace and for test schema i have created different tablespace named test_tbs.
I have a mview based on the database link. Mview created without the error and first time refrehment has been done properly in time, but after the first time it is not refreshing.
Error:- ORA-02448: constraint does not exist ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2254 ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2460 ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2429 ORA-06512: at line 1
The Primary Key Constraint on the base table/MV is deferrable, the base table and the MV are in different schemas and the user trying to refresh the MV has an explicit grant on "ALTER ANY MATERILIZED VIEW" and "SELECT ANY TABLE" through a role.
Its refreshing successfully when I make the PK constraint (Base Table, MV) NOT DEFERRABLE (or) when I explicitly grant "SELECT ANY TABLE" to the user trying to refresh the MV.
Simplifying the data structure that my problem concern, let's say there are two materialized views between whose data there's a one-to-many relationship [the relationship can be logical without a need of creating any foreing keys].
The data should be as actual as possible respecting the content of the master tables, let's say it shoul be refreshed every 5 minutes.
As far as I know, the jobs related to each snapshot, even if they have a START WITH and NEXT parameter set to the same value, work independently...So: what would be the best manner to synchronize the jobs so as to make sure the data of both snapshots are coherent?
I have a database schema with a Materialized View (MV) that updates a products table shown on a website. This schema was recently imported to an 11g database from 8i, but since this import I have been unable to refresh my schema's Materialized View.
The MV_PRODUCT_MASTER Materialized View attaches price data to product data that is stored in a normal WEB_PRODUCT table, and create an MV table as a result. The output MV table is what the website pulls data from to display to the site users. Since it is an MV table, this table cannot be edited directly. In order to change, say, a product description, I need to alter the description field in WEB_PRODUCT and manually refresh the MV_PRODUCT_MASTER table. Only through the refresh will the upstream edits appear in the MV_PRODUCT_MASTER table and be visible on the website.
In my old 7.6.0.11 copy of TOAD, I could manually refresh these MVs easily, by opening the "Snapshots" tab, right clicking on the MV I wanted to refresh and selecting the "Refresh" option. Since the schema was imported to 11g, I have been using the Oracle SQLDeveloper tool to manage the schema. SQLDeveloper doesn't have a clear method for manually refreshing an MV, or else the method I am using isn't working.
If I right click on the MV_PRODUCT_MASTER Materialized View object, and choose "Other Actions", I see the following choices:
I assumed that -Force Materialized View Refresh- was the right choice, and chose that. This option displays the SQL:
alter materialized view "WEBADMIN"."MV_PRODUCT_MASTER" consider fresh
When I apply this, I get the message: Materialized view - MV_PRODUCT_MASTER - has been set torefreshed. However, no changes appear in the MV output table. i.e. if I make a specific change to a row in the WEB_PRODUCT table, the change is not being carried into the MV_PRODUCT_MASTER table, so that indicated that the refresh is not actually happening. The MV table appears to believe it is being refreshed:
REWRITE_CAPABILITY GENERAL REFRESH_MODE DEMAND REFRESH_METHOD COMPLETE BUILD_MODE IMMEDIATE FAST_REFRESHABLE NO LAST_REFRESH_TYPE COMPLETE LAST_REFRESH_DATE 06-APR-10 STALENESS UNKNOWN
But it isn't showing any changes.What am I doing wrong? Is there a plain SQL statement I can run in order to run these refreshes, instead of using the SQLDeveloper GUI?
I support an APEX app that has one workspace for Development and one for the live Production application. When I originally created the Dev instance I was able to copy tables and data by granting select privileges between the two workspaces (I did this one table at a time).
The development workspace data needs to be refreshed from production since it's been a long time since the initial refresh and is very out of date. I would like to do a couple things:
1) execute SQL to compare the tables in the two workspaces to ensure they're structurally identical 2) execute SQL to truncate Dev tables and refresh from Prod Is there a way to do this?
I would like to create a process that allows me to move from record to record without refreshing a whole page. Specifically, I'd like to use a tree object that allows the user to select items and then have the details for that item show up on the right side of the page. Is there a way to do this without doing a complete page refresh?
So far I've tried two different on-demand processes:
- first I created an "Automatic Row Fetch", but I read on the board that this actually won't work as an on-demand process;
- I also tried a PL/SQL process that sets the various variables (e.g. ":P7_NAME") based on a query. This updated the session state, but it didn't refresh the fields on the page. Is there a way to trigger this refresh?
I have two same DB schema (same structure, same data) and I need to provide update in one of them when data in the other one is updated. It is singe direction only (we change data in DB Schema A and synchronize data in the DB Schema B; there is not opposite direction). Only small portion of data (compared to the size of DB Schema) might be changed or added this way.
Im in the midst of installing a patch on my UIM. However, in the planning phase, the Oracle guide recommends that I backup my database schema and database domain for UIM in case the patching fails and might affect the whole UIM app. May I know how to do this?
We have some materialized views in our environment which refreshes after every 1 hour. In the same environment, we have some big processes and we do not want the performance of these big processes to get affected because of refreshing these materialized views.
if there is a way to pause the refreshing of materialized views before running the big processes and later after the big processes are completed, then resume the refreshing of the materialized views?
One way I can think of is to drop the materialized views and create the materialized views back.
I need to insert data from one schema table to other schema's table in same database.The thing is columns are not equal.so when I am trying to use insert statement it is throwing error as not enough values. The situation is explained clearly below.The insert stmt is implemented in second schema whose table name is b.
Table created. SQL> ALTER TABLE B ADD 2 CONSTRAINT B_PK1 3 PRIMARY KEY 4 (ID);
Table altered. SQL> create sequence b_seg start with 1;
Sequence created. SQL> insert into b select b_seg.nextval,lexcom.a.* from lexcom.a,dual; insert into b select b_seg.nextval,lexcom.a.* from lexcom.a,dual * ERROR at line 1: ORA-00947: not enough values
So,for table b in ID column sequence needed to be inserted and other columns need to be taken from table a.I can understand the error is because two tables are not having equal columns.So,the insert stmt is throwing error.
I can manually write by taking columns from a and b and write insert stmt as follows,but this is tedious process.
SQL> insert into b(ID,Name,rollno,address)select b_seg.nextval,lexcom.a.Name,lex com.a.rollno,lexcom.a.address from lexcom.a,dual;
3 rows created.
But this is time taking and I had tables which has many columns to be inserted.So is there any other way to solve it and implement insert stmt.
I have a Multi layer Mviews and Views which i use to load a table. There are three base level Mview which is accessed by 4 views ... which are in turn accessed by a view which is used to load a table.
Before the insert called for the table .. the base mviews are refreshed.
I get the "ORA-01410 Invalid Rowid" error while inserting in to the table and while refreshing the mviews. They don't occur every time and not together as well.
The Mviews contains table joins and the top level views which accessing these mviews does aggregation. Below is the mview query for one of the mview.
I have create a mview using a dblink with the refresh difference of every 10min. Suddenly I check the mview refresh date and time it was not getting refreshed automatically at the time interval specified.
drop MATERIALIZED view log on afccv.tbl_voicechat; drop MATERIALIZED VIEW SMSCHAT.TBL_VOICECHAT_NEW1 ; CREATE MATERIALIZED VIEW SMSCHAT.TBL_VOICECHAT_NEW1 ORGANIZATION HEAP PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS NOLOGGING STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
[code]....
I am trying to find out what is the cause of not refreshing and also googled for the same. got some link also either not linked to same problem or not cleared.. Where should i checked regarding the error cause.
I have identified the problematic part. I have a multi-select select list and my query goes like this:
select o.order_id, s.salesrep_name from ml_orders o, ml_order_salesrep_mapping m where m.order_id(+) = o.order_Id and case when :P22_SALESREP is null then 1
is it possible to remap the database schema during export?
Our developers have their databases stored within individual schemas and i want to provide a dumpfile that each developer is possible to easily import to his schema. But when i want to impdp the dumpfile i have to know the schema name within the dumpfile to do a remap to the individual developers schema -> so providing a specific schema name for within the dumpfile would be great.
At the moment i'm getting the ORA-39146, schema does not exist on importing the database..
How can i import whole schema from other database. i have a database WHO2 WHERE I HAVE A schema called stg_cupid_rp2 i want to import into data WH0T in stg_cupid_rp2 using DBlink EXP_SAT.
I have created trigger on database level in system schema. While i am creating new tables in system schema, trigger logged the entry but when i am creating table in scott schema it is not working for that.
CREATE OR REPLACE TRIGGER ddltrigger AFTER DDL ON DATABASE BEGIN INSERT INTO aud_log (user_name, ddl_date, ddl_type, object_type, owner, object_name ) VALUES (ora_login_user, SYSDATE, ora_sysevent, ora_dict_obj_type, ora_dict_obj_owner, ora_dict_obj_name ); END;
