Loose Coupling Among Objects Within Oracle Schema?
Sep 30, 2010
I am building an information service that manages Suppliers. The suppliers are used by our billing system, tender system and sales system. Though 60% of the attributes of supplier are unique to each system, there are still 40% attributes of Supplier that are shared across the systems.
My objective is to build a flexible system, so that change to one individual system's data, should not impact other systems. For example, if i need to make certain tables offline for upgrading them, it should not impact rest of the systems that need supplier information. What is the best way of achieving this? Should all the different context specific attributes live in one schema, but deployed on different table spaces? Also, the read and update may happen more for one set of attributes than the other. How should i logically represent them via one model, but deploy them in such a fashion that they can evolve independently?
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Jul 13, 2010
I was wondering whether we all think of disadvantages or is it we always love the concept and use them..so recently i started out to think what may be the disadvantages of schema objects.
For example Packages has lot of advantages like Information hiding, Scope of varaibles declared in spec, dependency crisis etc, then i read somewhere that if a package is referenced then the entire package will be downloaded in the memory.
So my question is what if the package is very large would it accomdate in the memory without any leaks , i am assuming that its like LEAST RECENTLY USED mechanism. i have a question for you about disadvantages
1. Packages
2. Cursors
3. Collections, includes Associative arrays, VARRAY, nested table
4. materialized views
5. views
6. indexes
7. having more than 100 columns in a table need to spilt it or to keep in the same table.
any object can have its own disadvantages.
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Apr 8, 2010
I got the below error while executing the procedure. What the procedure doing is recreate the objects of one schema into another. After recreating some objects it throws the error.
code is...
1 CREATE OR REPLACE PROCEDURE SCHEMA_IMPORT6
2 AUTHID CURRENT_USER
3 AS
4 V_Objid NUMBER;
5 V_Xml XMLTYPE;
6 V_Xml_Ind XMLTYPE;
[code]....
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Sep 6, 2011
I wanted to move all db objects from one schema to another schema.
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Jul 19, 2012
Recently I migrated our Oracle to new machine using exp/imp on schema basis. After import finished I had tons of invalid objects in database. I ran utlrp.sql script and lots of them got validated. Than I recompiled manually in EM those are left but two invalid objects (MGMT_JOB_UI description and body) in SYSMAN schema gave error while recompiling.
Now when I click on any scheduled jobs to edit it or view its schedule, EM throw following error:
X Error
jobType - jobType page property expected
I think its related to that invalid package. The errors while compiling the specification are as follow:
Line # = 50 Column # = 1 Error Text = PL/SQL: Declaration ignored
Line # = 65 Column # = 9 Error Text = PLS-00201: identifier 'JOBRUNTABLETYPE' must be declared
Line # = 88 Column # = 1 Error Text = PL/SQL: Declaration ignored
Line # = 107 Column # = 9 Error Text = PLS-00201: identifier 'JOBEXECTABLETYPE' must be declared
The Package specification is as below,
AS---------------------------------------------------------------------------------- type definitionTYPE CURSOR_TYPE IS REF CURSOR;-- Get the targets for this step, if any-- if p_return_display_names is false, return the target's internal nameFUNCTION get_step_targets ( p_step_id NUMBER, p_return_display_names BOOLEAN DEFAULT true ) RETURN SMP_EMD_STRING_ARRAY;-- Get the targets for this step, if any, as a comma separated string-- if p_return_display_names is false, return the target's internal nameFUNCTION get_step_targets_str ( p_step_id NUMBER, p_return_display_names BOOLEAN DEFAULT true ) RETURN VARCHAR2;-- Get the parameters for this job, filter as specified for this jobtypePROCEDURE get_visible_params ( p_job_id RAW, p_exec_id RAW, p_params_out OUT CURSOR_TYPE);-- Get the URI for this uri_use-- see emSDK/job/dtd/UriSource.java for uri_use constantsFUNCTION get_display_uri ( p_job_type IN VARCHAR2, p_uri_use IN
[code]....
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May 19, 2013
i have schema A and i want to check who(which schemas) can access schema A's objects and what privileges other schemas have on objects of schema A.
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Mar 30, 2011
I told about Oracle multi master replication below.
Can I replicate some objects of "X" schema at A server to "Y" schema at B server using MM replication?
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Mar 2, 2010
A function returns the comments of all objects of the schema using metadata api. I used DATABASE_EXPORT as object_type for open function. which name (eg: base_object_name, base_object_schema...) should i use to get comments of single object. My code is..
1 CREATE OR REPLACE function f_depen_obj
2 return clob
3 as
4 a number;
5 b number;
[code].....
I got comments of all objects when i commented 11th,12th lines. Now i want the comments of EMP table of SCOTT schema. I got the following error ..
SQL> select f_depen_obj from dual;
ERROR:
ORA-31603: object "EMP" of type TABLE not found in schema "EMP"
ORA-06512: at "SYS.DBMS_METADATA", line 1546
ORA-06512: at "SYS.DBMS_METADATA", line 1583
ORA-06512: at "SYS.DBMS_METADATA", line 1901
ORA-06512: at "SYS.DBMS_METADATA", line 3806
ORA-06512: at "SYS.DBMS_METADATA", line 3784
ORA-06512: at "SCOTT.F_DEPEN_OBJ", line 17
no rows selected...i got output (comments of single object) when i use COMMENT instead of DATABASE_EXPORT in open function(line no: 9). But i need to use DATABASE_EXPORT as a object_type. Which name is suitable for set_filter procedure instead of 'NAME'?
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Sep 13, 2013
Iam having the following query, After executing schema refresh using export & import , getting count of database objects comparison to be done,
-- SELECT 'TRUNCATE TABLE '||OWNER||'.'||TABLE_NAME||' ;' FROM DBA_TABLES WHERE OWNER='PRICING' order by TABLE_NAME;
SQL> SELECT 'select count(*) from '||OWNER||'.'||TABLE_NAME||' ;' FROM DBA_TABLES WHERE OWNER='PRICING' order by TABLE_NAME;
The output expected was to display each table name in a schema following below with corresponding number of records to be displayed, but it wasn't showing correctly.
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May 25, 2011
I was importing one schema from Oracle 10g to 11g using traditional import. I imported as a SYS user, so all the objects created in SYS schema. how can I remove these objects and retain only default SYS objects
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Jan 31, 2012
I heard that USERS tablespace should not contain any other application schema objects.
If the above statements is true , why it should not contain other schema objects ?
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Sep 11, 2011
Is there a way to restore the schema and its associated objects once it is dropped?
1. The flash back database feature is not ON in the database where schema was dropped.
2. The data files/ table space has not been dropped
3. There was no export taken for the schema.
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Sep 29, 2012
I need a job to get executed for every 1hour.Like i need a query to identify invalid objects in database per schema ,invalid type and this is a job to run every hour.How to schedule it.I only know that dba_jobs have the info.
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Feb 23, 2013
I get import error while trying to import objects into schema.
Export file created by EXPORT:V11.02.00 via direct path
import done in US7ASCII character set and UTF8 NCHAR character set
import server uses UTF8 character set (possible charset conversion)
. importing DEMO's objects into TEST
. . importing table "TAB1"
IMP-00058: ORACLE error 1950 encountered
ORA-01950: no privileges on tablespace 'USERS'
i understand we need to grant the user space resource on the tablespace as below.
ALTER USER <user> QUOTA UNLIMITED on <tablespace_name>
My another question is can we grant QUOTA UNLIMITED on <tablespace_name> to user ?
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Jul 25, 2010
I imported a schema HR from export DUMP ....i can find all the objects of schema HR in the imported database... but i got an error for a plan_table which is assigned to USERS tablespace in the source database.. ...
HERE COMES THE ERROR I GOT DURING IMPORT:
[oracle@localhost mom]$ imp file=exp_schema_ref.dmp log=imp.ref.log fromuser=hr touser=hr commit=y
Import: Release 10.2.0.1.0 - Production on Mon Jul 26 00:03:57 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Username: sys/sys as sysdba
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production With the Partitioning, OLAP and Data Mining options
Export file created by EXPORT:V10.02.01 via direct path
import done in US7ASCII character set and AL16UTF16 NCHAR character set
. importing HR's objects into HR
. . importing table "COUNTRIES" 25 rows imported
. . importing table "DEPARTMENTS" 27 rows imported
. . importing table "EMPLOYEES" 107 rows imported
[code]....
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Feb 29, 2012
I am looking at a performance issue at the moment and trying to replicate on a test system. I am initially looking at the impact of upto-date statistics on the main schema's objects.
For this I wanted to:
first run the batch with whatever stats were present in the database Flashback the db to before the batch . Gather stats Re-run the batch with updated stats and compare results.
However, I inadvertently ran the stats job before running the load the first time! I have the SCN from when the environment was set up like production (ie before the stats were run) so am I correct in saying that if I flashback to this point then the stats will be "old" and I can just run the batch then? I know I can verify this when I Flashback the database by looking at LAST_ANALYZED on tables etc but it would be good to know this before hand as it's a 12 hour batch.
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Apr 21, 2011
We transferred our Oracle database 11.1.0.7 from windows 2003 enterprise edition 32 bit to windows 2008 enterprise edition server 64 bit.Database is working fine but we have 53 uncompiled objects which are related to OLAPSYS and public as follows
OLAPSYSALL$OLAP2_AW_CUBE_AGG_LVLVIEW
OLAPSYSALL$OLAP2_AW_CUBE_AGG_MEASVIEW
OLAPSYSMRAC_OLAP2_AW_DIMENSIONS_VVIEW
OLAPSYSALL$OLAP2_AW_CUBE_AGG_OPVIEW
OLAPSYSALL$OLAP2_AW_CUBE_AGG_SPECSVIEW
[code]....
Our business objec is working fine and all other schema does not have any uncompiled objects.How can we validate the OLAPSYS and PUBLIC schema.
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Jan 13, 2011
How to use same oracle sequence name in Oracle Database schema as well as timesten schema?
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Aug 10, 2010
I want to import a schema from one database schema to another schema b from db STBTST to STATST and from schema CMSSTAGINGB to CMSSTAGINGA
I first want to test this to my own schema (mvanmannekes) CMSSTAGINGA is filled at the moment.
So i've created a dump from STBTST-CMSTAGINGB For importing im using this statement:
impdp mvanmannekes/password schemas=cmsstagingb remap_tablespace=cmsliveb_data:cmslivea_data
remap_tablespace=cmsliveb_index:cmslivea_index
remap_schema=cmsstagingb:mvanmannekes directory=expdp_dir dumpfile=cmstagingb.dmp
I'm getting this:
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
[code]....
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Jan 23, 2013
I`m migrating a mysql 5.0 database to Oracle 11g. I used Oracle's Sql developer and with a workaround i could convert tables, constraints, indexes, some triggers and created sequences.
My question is, what happen with stored procedures and functions, they didn't pass. I've been searching and i found here hey have to be rewritten. Is there any way to convert those objects ? I can't afford to do it manually because the mysql database has almost 400 of them and they aren't small.
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Apr 4, 2013
I'm using the below data base version
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production.
I have created a pl sql type as object with five attributes as below.Now im trying to insert only 3 attributes with the attribute names ( As like insert into statement with column names).
Create type address_test as object (
Streetno varchar2(20),
Locality varchar2(20),
City varchar2(20),
Pin varchar2(7),
Country varchar2(20))
[code]....
Is that possible to use attribute names in the insert statement of column object type ?
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Nov 25, 2012
the more customers we have for our software solution the more individual oracle objects (Tables, Packages, Functions, etc.) we have in our scheme. Right now we separate these by giving them identifying names like "X_CUSTOMER1_TABLENAME" e.g. (I know ..... )
This is not very practical when keeping our reference clean and when deploying/syncing our reference with a customer db: One customer would receive the objects of other customers on a deploy.
Is there a common solution to this problem? We were thinking about having a separate scheme for each customer. That way we would have our standard, untouched scheme with the basic functionality and the customer schemes with the individual content.
To make it a bit more concrete: We have around 100 basic tables that make the most of the content/functionality of the software. Each customer might have between 1 -5 additional tables with "custom" data that is used in conjunction with the standard objects in individual packages, functions etc. The installations will be made on our customers systems. So I have in mind to have schemes 0001, 0002, etc for each customer IN OUR REFERENCE. But we would then deploy only the scheme for that certain user when installing on their system. So for example for customer 0001 I would deploy the STANDARD and 0001 scheme
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Jul 30, 2012
On our production servers we have simple function with result_cache, like this:
create or replace function f_rc(p_id number) return number result_cache
is
ret number;
begin
select t.val into ret from rc_table t where t.id=p_id;
return ret;
exception
when no_data_found then
return null;
end;
/And its results frequently invalidates without any changes in table or function. I found only 2 cases when oracle invalidates result_cache results without any changes in table:
1. "select for update" from this table with commit;
2. deletion of unrelated rows from parent table if there is unindexed foreign key with "on delete cascade".
I test it on 11.2.0.1, 11.2.0.3, on solaris x64 and windows. Test cases:
[URL]......
But none of them can be the cause of our situation: we have no unindexed fk, and even if i lock all rows with "select for update", it still does not stop invalidating. In what other cases this happens? Am I right that the oracle does not track any changes, but the captures of the locks and "commits"?
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Jun 6, 2011
it is possible to create Oracle objects(Views) using Conditional compilation?
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Oct 8, 2010
I'm converting a SQL Server db to Oracle 10g. So far it's going pretty well. However, I've hit a significant performance snag trying to run queries against the converted view whose SQL is below. In SQL Server it runs pretty quickly, 10-15 secs. This query presently returns about 1.7 million records. code below, and assuming I've done nothing to optimize the database or the objects involved,
BS
------------------
CREATE VIEW DST_TMP_VIEW_ACCT_XACTN_CRN AS
SELECT CUSTACCNUM,
FUNDID,
[code]...
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Jun 26, 2013
How to Pick / Extract the java class files from the database.? We have not maintained the latest codes in the oracle application server where java class code is residing.
All the Java Classes are available only in database. So we need to pick the latest java class code from production environment. In TOAD we tried but all class objects are listing at the left side but we are unable to take the code. So how can we take the latest codes(java classes) from the Production Database as a backup.
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Nov 17, 2011
I have created two types and a list of the first type:
create type type1;
/
create type type1_list as table of ref type1;
/
create type type2;
/
I have now just created the two types as follows:
create type type1 as object(
id# number
);
/
create type type2 as object(
attribute1 type1_list,
MEMBER FUNCTION function1 RETURN NUMBER
);
/
Ok, I've created the tables (I don't know if it's necessary to point out my problem)
CREATE TABLE type1_table OF type1;
/
CREATE TABLE type2_table OF type2
NESTED TABLE attribute1 STORE AS nested_type1_list_table;
/
And what I wanted to do now is to implement the member function1 and check something of the attributes of type1 in the list of attribute1... And that's where my question occurs, how does it work, I can't figure it out. I tried something like this:
Quote:
create or replace
TYPE BODY type2 AS
MEMBER FUNCTION function1 RETURN NUMBER AS
[Code]....
But I don't get the right way, it doesn't work
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May 16, 2011
A single master schema where many developers are accessing. all share same password.
now i would like to trace all the changes made by each users. so i create a individual users for all and grant permission to access that schema.do i have a possibility of auditing the changes did by each user for that particular schema
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Jul 24, 2011
We have an application with many separate databases (one per customer). Given they share the same business requirements (service hours, change mgmt etc), we're interested in potentially consolidating the separate DBs (which are relatively small) into separate schemas within a fewer no of databases to reduce the overhead.
Our issue is that the application is hard-coded to use a specific administrator and application connection user name. Changing this is unfortunately not an option.
Given this limitation, is there any possibility to map a generic user into a customer-specific schema based on the database service that they connect to? Each customer connects to different database services but may use the same user name. We considered using private synonyms but this seems to acheive the opposite (i.e. many different users could connect and map to a single users schema). One thing to point out is that where there is a single user name, it is acceptable for a single password to be used across the different customer DBs as they will be a single admin/user.
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Apr 26, 2010
I would like to create a table in another schema(CBF) as already exist in my schema(TLC) without data but related indexes,synonyms and grants should be include.
How could I do this without using export import. I am using TOAD 9.0.1.
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