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0
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2answers
3k views

Possible career paths for Oracle Certified Associate (OCA) [closed]

In order to be confident in databases as a entry level job candidate, I completed the OCA certification. Now I want to know what career paths follow this. Can one go into data-mining, BI, or R&...
2
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2answers
1k views

Piplelined Result Set over Database Link Alternatives

Since a pipelined result set cannot be returned over a database link (see MOS note 560743.1), what workarounds/alternatives are there. I can think of a few, but I'd rather not lead the question. I ...
2
votes
2answers
2k views

Error updating a master table of a materialized view

I've created several materialized views, and all but one are working correctly. The specific error I'm getting (via a Java job) is this: error loading from table 'STG_INTERACTION_RESOURCE_FACT' to ...
2
votes
2answers
2k views

Oracle Restore and recover Database on the same host?

I have DB1 database on Server1 . I have taken backup. After that I have created table TEST. Inserted some values in the TEST table. Truncated table. And want to return my TEST table to its previous ...
2
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1answer
2k views

How to find out CPU utilization per Oracle Database on Linux?

For capacity planning on existing RedHat servers hosting Oracle Databases, I was asked how to find out the CPU utilization per database. Thought it would be as simple as ps -eo pcpu,comm |grep -i ...
6
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1answer
2k views

What's the difference between a v$ view and its dba_ equivalent?

What's the general difference between a v$ view and its dba_ equivalent? Take, for example, v$tablespace and dba_tablespaces.
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2answers
968 views

Can I implement a 'gapless' identity column in Oracle?

In SQL Server it is so easy to write: create table #tmp ( id integer identity(1,1) primary key, message varchar(256) ); When I try to migrate this to Oracle, I end up with: CREATE ...
1
vote
1answer
1k views

How do I verify the uninstall of Grid Control and WebLogic?

I installed Weblogic, the required patch and then Grid Control on a Linux (RHEL 5.5) server. Unfortunately, my instructions did not have the -d64 tag to allow for 64 bit installation and I have to ...
5
votes
3answers
1k views

Alternative for OPTIMIZER_FEATURES_ENABLE

I've installed a PHP driven application in a client's 9i server (Oracle9i Release 9.2.0.1.0 - 64bit Production). Certain queries are having an awful performance (it can use from 15 minutes to hours ...
1
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2answers
839 views

Oracle XE Fedora 15 Installation problem

I got a problem installing Oracle XE on Fedora 15. Hope you can help me. I used this tutorial(that worked great for F14) but didn't got lucky with F15. The problem is that during installation goes ...
1
vote
1answer
144 views

how to write pl/sql named programme for this [closed]

I have a table M_PARAMETER which has a column MMRUN. When this MMRUN='Y' then the User can not modify any transaction in the app's front end. When MMRUN='N' then the User can do the modification. ...
0
votes
1answer
5k views

What is the JDBC URL for Oracle's Data Guard Fast-Start Failover?

Currently I have... url= " jdbc:oracle:thin:@ ( DESCRIPTION= ( ADDRESS_LIST= (LOAD_BALANCE=OFF) (FAILOVER=ON) ( ADDRESS= (PROTOCOL=TCP) ...
5
votes
1answer
72 views

What is Utility_DSN?

I'm not exactly sure when it happened, but I've started noticing that some of the hosts in my Enterprise Manager grid have a target named UTILITY_DSN. Does anyone know what this is? The one I noticed ...
2
votes
2answers
2k views

Question about 'user process' in the context of Oracle

The following is an except from oracle documentation. Overview of User Processes When a user runs an application program (such as a Pro*C program) or an Oracle tool (such as Enterprise ...
12
votes
2answers
59k views

How do I declare and use variables in Oracle?

My main skills are with SQL Server, but I have been asked to do some tuning of an Oracle query. I have written the following SQL: declare @startDate int select @startDate = 20110501 And I get this ...
6
votes
3answers
1k views

For Oracle, we mount the instance to the database or mount the database to the instance?

The following text is extract from oracle documentation. Start the instance, and mount and open the database. This can be done in unrestricted mode, allowing access to all users, or in ...
4
votes
1answer
3k views

What does WE8DEC mean?

It is one of the commonly used character sets. What does it stand for? Is it an acronym for something?
6
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2answers
13k views

Oracle - Automate Export/Unload of Data

Oracle SQL Developer has an option to export the contents of a query result to various formats (CSV/fixed width/Excel/XML). Is there any way to automate it? If not, what free tools are available ...
4
votes
2answers
8k views

Oracle 10g dump file push into Oracle 11g database

Currently when executing the imp command with the following parameters: file=my.dmp log=my.log fromuser=myuser touser=myuser The following errors occur: IMP-00058: ORACLE error 12560 ...
6
votes
3answers
733 views

What are the top 5 design decisions which need to be made when implementing a database?

I am implementing an Oracle System to store event alerts from an application so I guess all the schema, database design will be handled by the application through a sript. I am new to Database design,...
3
votes
2answers
8k views

Why can't we specify group functions in Oracle in the where clause?

SQL> desc tab1 Name Null? Type ----------------------------------------- -------- ---------------------------- ID ...
5
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2answers
11k views

Multiple copies (cp) with Oracle ASM asmcmd tool?

In order to import a transportable tablespace into an Oracle 11 database with ASM, we use the cp command of the asmcmd tool. How can we copy more than one file at a time? Wildcards are not supported,...
3
votes
3answers
13k views

Clone / Copy Oracle 10g & 11g

Hi I am absolute begginer in Oracle domain. I would like to learn way how to clone copy oracle database to som backup, use this backup on another server. Oracle is installed on Windows server 2003. ...
5
votes
2answers
3k views

Determine Index Compression Candidates Online

By doing the following I can determine if an index will benefit from compression and how many columns should be included in the compression: ANALYZE INDEX Owner.IndexName VALIDATE STRUCTURE OFFLINE; ...
10
votes
1answer
30k views

How can I Estimate Table Sizes within Schema (Oracle)

I'm trying to estimate the table sizes within my schema (in MB). This is what I have so far: SELECT table_name, owner, last_analyzed FROM all_tables I'm fairly new to SQL so I have no idea how I ...
3
votes
2answers
318 views

Is there a setting to suppress C-Style comments appearing as DOC in Oracle Output?

Just again looking at some log from an oracle script, where the developer intended to comment out some part not to add documentation. I don't want that a script containing code like this /* select ...
2
votes
2answers
2k views

null check and string concatenation

Can I do better than this query? select func_returns_str('key1') || nvl2( func_returns_str('key2'), ',' || func_returns_str('key2'), null) from dual; I ...
3
votes
2answers
7k views

How to debug “IO Error: End of TNS data channel” errors?

I am seeing sporadic reports of an application failing certain queries with an "End of TNS data channel" error from the Oracle (10g) server. Are there any queries I can run (e.g., with SQL*Plus or ...
3
votes
2answers
538 views

How to query status changes in time series?

Given create table rating ( ID int identity(1,1) primary key, PersonID int, Ratingdate date, rating varchar(2) ); insert into rating values ( 1, '2010-08-04' , 'A3'); insert ...
2
votes
1answer
163 views

Problem connecting to the Database

This is my Oracle DB : Server : hp805 Listener : 7633 SID : idopd ServiceName : serv01 Login : ikr_adm Passwd : ikr_adm_01 How do you connect to this DB ?
4
votes
4answers
518 views

How to get a column A which has the smaller column B grouping by column C?

I'd like to get the ID of a dataset for each category (my grouping column) which has the smallest "order" column. Here a set of data to explain my thoughts: CREATE TABLE DATAS ( ID INT(2) , ...
8
votes
2answers
3k views

Limit redo for materialized view complete refresh or manual equivalent

A materialized view(MV) log can be used to allow a MV to do a fast refresh which only modifies the data that has changed. However, various conditions prevent the MV from using the log and therefore ...
6
votes
1answer
1k views

Oracle Grid Control Notification for Data Guard failures

Grid Control 10.2.0.5. Does anyone know a way to configure a Grid Control notification rule for a failure of the SQL APPLY process on a logical standby database? I'd really like an email notification ...
5
votes
3answers
4k views

How to handle multiple Oracle homes?

On my desktop I have an Oracle client and and Oracle ODAC installed in different homes. I need ODAC because there ADO components off the Client installation don't work correct with CLOB data. I think ...
6
votes
1answer
2k views

Oracle concatenation of queries and function index usage

I have a problem with something I can't understand about indexes in Oracle 11g. We can create test data with: create table test2(field1 varchar2(100),field2 varchar2(100),field3 number,field4 ...
5
votes
4answers
11k views

Sqlplus parameterized query via file

I would like to issue a parameterized to Oracle via sqlplus with all the the parameters provided in a text file. Is there a way to do this? The query has more parameters than is reasonable for a ...
5
votes
2answers
3k views

SELECT statement with an explicit list of columns and then an asterisk (*)

SQL Server allows to use SELECT statements similar to: SELECT FirstName, LastName, City, * FROM dbo.Customers When I try to execute such a query on Oracle database, I get the following error: ...
18
votes
5answers
189k views

How to update a table from a another table

I have one table A has column (id, field_1,field_2), and another table B has column (id,field_2) Now I want to merge table B to A, that means i want to update field_2 in table A to value of table B. ...
5
votes
1answer
2k views

Do I need to enumerate the columns used in a materialized view when creating the MV log?

I'm currently creating materialized view logs on a whole bunch of tables in order to support materialized views with FAST REFRESH. The materialized views we're creating contain approx 30 columns from ...
5
votes
3answers
1k views

What could be the reason for disallowing a sub query in the values clause?

For example SQL> create table dates(d date); Table created. SQL> insert into dates select sysdate from dual; 1 row created. SQL> select * from dates; D --------- 28-MAY-11 SQL> ...
3
votes
2answers
1k views

Mapping SQL Server integer to Oracle Datatype

Well I know, that an SQL Server integer is best represented by NUMBER(10). But sometimes I have migrate some maintenance scripts to Oracle and I wonder if I must carefully map integer to NUMBER(10) ...
20
votes
7answers
19k views

Oracle - Any way to view uncommited changes to a particular table?

I'm debugging through a batch process currently that does a lot of DML statements, but doesn't do a commit right away. It would be nice to be able to view the "pending" changes from another session ...
10
votes
5answers
25k views

In Oracle how do I save a sequence.nextval in a variable to be reused in multiple inserts?

I'm writing a script to populate some tables with data for testing. I would like to write something like the following but I don't know how to do it (I'm Oracle 11g) SET ENABLED_USER_ID = SEQ....
5
votes
3answers
974 views

Database replication and consistency check

I got a question about 2 databases (oracle 10g) that I have, let's call them A and B. A have some information(in various tables) and I want B to get a partial copy of some tables from A, and ...
2
votes
1answer
2k views

Oracle Create Materialized View Script - Takes 12 minutes in DEV Schema, 5+ days in QA Schema

I have a materialized view in my Oracle 10g database that I need to rebuild. So I'm doing something like this... drop materialized view ViewName; CREATE MATERIALIZED VIEW ViewName NOCACHE LOGGING ...
2
votes
0answers
369 views

Reconfigure the registry for new Oracle installation

I have the following oracle homes installed on my Windows machine Oracle Developer Suite Oracle Discoverer Oracle 10G Client I installed Oracle 10G database manually by following the following ...
6
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3answers
5k views

Add Oracle Label Security to an existing Oracle installation

We are using Amazon EC2 to host some Oracle database instances while we are evaluating and prototyping some software. We are using the AMIs provided by Oracle - specifically, Oracle Database 11g ...
1
vote
3answers
438 views

Insert to particular location in Oracle DB table?

Suppose I have a table containing the following data: Name | Things ------------- Foo | 5 Bar | 3 Baz | 8 If I want to insert a row, so that the final state of the table is: Name | Things ...
7
votes
2answers
6k views

How to extract Procedure, Function, etc. Source Code from an Oracle Export

I have generated an EXPDAT.DMP file of an Oracle database with the command: exp userid=usr/pass@db owner=own rows=n compress=n I then ran the following command to generate a file containing the '...
8
votes
4answers
307 views

What would I need to do to make sure my DB policies have to pass a security audit?

I have an audit coming up, and I was wondering what physical, electronic, and logical access controls an auditor would look for when auditing a database for an ERP system. I'm really new to this ...