The second and terminal release of Oracle Corporations Oracle 11g database product. 11.2 was released for Linux on September 1st, 2009. New features added include RAC One Node, Improved data compression ratios (up to 20x), Edition Based Redefinition, Recursive Subquery Factoring, Instance Caging, ...

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Force number precision in a view with Union

I am using Entity Framework and Oracle. Oracle's ODAC seems to have a known bug where data of type NUMBER is cast to Int64 by Entity Framework. I thought a view would assist me but CREATE OR REPLACE ...
5
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2answers
2k views

How to install Oracle 10g Express and 11g Enterprise on same machine

I have to continue maintaining an Oracle 8i database that receives information (about 20 Inserts and Updates a day) from a 9i database. I am upgrading the 9i database to 11g which does not support ...
2
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1answer
295 views

Oracle start database with incorrect password

I have a question regarding starting oracle database with in correct sys password. I have provided incorrect password for sys user and I am still able to start database and execute statements. So ...
2
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1answer
1k views

Oracle: Long delay opening connections

I am getting a very long delay (about 2 minutes) opening initial connections on my 11g2 development server. Sometimes I get ORA-28547: connection to server failed, probable Oracle Net admin error and ...
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2answers
9k views

How high can I set undo retention on Oracle 11gR2

Is it viable to set a very high undo retention, as to allow flashback queries several weeks back in time? Naturally, enough space must be available in the undo tablespaces to contain the amount of ...
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0answers
6k views

Could Oracle ORA-08103 'object no longer exists' error be caused by size of undo_retention parameter?

Had a once-a-day long running data warehousing procedure that I had written that was failing about 50% of the time. Logs were showing ORA-08103 'object no longer exists'. ORA-12012: error on auto ...
3
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1answer
574 views

Wait time differences in Oracle

I'm trying to track the different wait time classes for current Oracle sessions but I must be misunderstanding something. When I compare the sum(time_waited)/1000 for a given session in ...
2
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1answer
1k views

Recover database until cancel without prompt?

The statement: RECOVER DATABASE UNTIL CANCEL prompts once to select the archive log file. Is there a way to pre specify the value so as to be able to use it in a script without prompt? I have ...
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1answer
212 views

Pitfalls of creating a foreign key constraint on a system table?

I have a number of tables which hold metadata about the tables and packages in the system. This is intended to be a resource for analysts and documentation so it is not used to create data. One of ...
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1answer
4k views

Oracle Forms Runtime error

When I am running a form in Forms 11g http://rahulsingh-pc:8888/forms/frmservlet I'm getting an error: Failure of server APACHE bridge: No backend server available for connection: timed out after ...
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ORA-01460 during Data Pump Import

While migrating data from Oracle 11.2.0.1 RAC to Oracle 11.2.0.3 RAC using Data Pump, the import failed with ORA-01460: ORA-39097: Data Pump job encountered unexpected error -12801 ORA-39065: ...
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2answers
1k views

Why does my query run faster after I force full table scan?

I have a MERGE statement that took forever to execute the select as the table it is running from (SUB_DATA) is rather big (read 1.4 Tb, 700 million rows). My SELECT looks like this. SELECT ...
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2answers
749 views

Row level restore with Oracle Recovery Manager (RMAN)

We're approaching the end of 2012 and I still find myself relying on database exports to maintain the ability to do row level restore operations. While this is a proven method, it sure would be nice ...
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2answers
2k views

Why Oracle 11g installs in folder C:\app\<name_of_user>

Just curious, now Oracle 11g installs by default in folder C:\app\ Why? Before, Oracle was installed by default in folder C:\oracle... Why now is created "app" folder?
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1answer
11k views

Oracle 11gR2 archive log destinations

I want to add a second archive log destination to an Oracle 11gR2 RAC database with ASM, the idea is that I will then have some redundancy if the primary storage should fail. Archive log is already ...
3
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2answers
27k views

How to store single result in variable and reuse it in a query (Oracle)?

I have a query like SELECT id FROM xyz WHERE ...; which has a more or less complex WHERE clause and returns exactly one row with one column (ID). I need this ID for several later queries in a ...
1
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1answer
274 views

Can I recover an overwritten incident trace file?

I was looking at incident trace file in oracle database but some how that file got overwritten. As of now I have ecrep_ora_26467_i49966.trm but trhe corresponding .trc file is lost. is it possible to ...
2
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1answer
507 views

Upgrading from 10.2g to 11g by incrementals

I know it's possible to generate a full rman backup in a 10.2g database, move it to another server containing 11g, restore it there and finally do an upgrade. Since I have to do this to a large ...
2
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2answers
711 views

Oracle symmetrical one-way replication for cheap HA: unfashionable or technically unfeasible?

We have two smallish unrelated databases on two big Oracle Enterprise servers. Instead of buying more licenses and servers for high-availability replicas, can we replicate database B to server A and ...
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1answer
2k views

Error when installing Oracle 11.2.0.3 in Windows Server 2008 R2 64 bits

I downloaded Oracle 11.2.0.3 installer: p10404530_112030_MSWIN-x86-64_1of7.zip p10404530_112030_MSWIN-x86-64_2of7.zip p10404530_112030_MSWIN-x86-64_3of7.zip p10404530_112030_MSWIN-x86-64_4of7.zip ...
3
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1answer
5k views

Add an additional listener to Oracle Database Appliance

After deployment of Oracle Database Appliance with OAK 2.3.0 the standard listeners are configured for the public network on bond0. That includes SCAN listeners and one VIP listener per node. This ...
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2answers
19k views

Simple query with date type requires explicit conversion to_date of date

My question is, I have a table which contains a column called myDateColumn (for example) which is of the type date: I can confirm desc myTable contains this line: myDateColumn NOT NULL DATE ...
3
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1answer
2k views

Network design considerations for Oracle Database Appliance

With the introduction of Oracle Engineered Systems the DBA is moved somewhat closer to infrastructure design decisions, and expected to at least have some opinions of the network design requirements ...
3
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0answers
832 views

Where can I find a syntax reference for Oracle SQL Developer's “Generate DB Doc” function?

Oracle SQL Developer (I'm using v3.2) has a feature called "DB Doc", which generates documentation for database objects. I mostly want to use it to generate documentation for my stored procedures, ...
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1answer
162 views

Does Oracle server installation include client components?

I installed Oracle personal edition on a Windows Server 2008 virtual machine for testing purposes. My intention is to test Linked server functionality with SQL Server. Does Oracle Server installation ...
3
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2answers
688 views

Pivoting data for stacked charts (grouping and creating new columns for each distinct value)?

I have something that looks like this (SQL Fiddle here): Date Location Value 1/1/2012 Baltimore 36 1/1/2012 Houston 36 1/1/2012 Chicago 55 2/1/2012 Baltimore 49 ...
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0answers
580 views

Restoring Oracle prod backup to test server with new database name

I need to restore an Oracle production database (aaprod) to a test server that already is home to a test database (aatest) under a new name (bbtest). I have a cold backup of the production database ...
3
votes
3answers
483 views

Why does the query cost change so much and how to prevent it

The query causing me the issue is too big, but the piece that seems to be the core is quite simple, I will try to go with that: The query has an structure like: SELECT ... a lot of stuff ... ...
12
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1answer
2k views

Commit vs Fast Commit vs Commit Cleanout in Oracle Database

I was wondering whether someone could verify my understanding regarding the differences between those 3 terms as pertaining to Oracle Databases. Many sources confuse these terms and do not explain ...
4
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2answers
826 views

Multicolumn extended statistiscs, NLS_SORT and NLS_COMP, CHAR columns, and the bane of my existance

This is as a result of this question. So I'm working with a query that looks like this: select count(*) from table1 where col1 = 123 and col2 = '1'; The problem is this: col2 is defined as a ...
7
votes
1answer
161 views

Cardinality is so far off from reality

I've got a table where the cardinality for plans just seems waaaaaay too high - despite updating stats and even trying dynamic sampling for Oracle 11gR2. select count(*) from table1 where col1 = ...
3
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1answer
112 views

Using Inteval Datatype to store result of calculation

I want to create a table which has hiredate and Interval of hiredate and sysdate. How to create a column that automaticlaly stores the calculation.
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2answers
5k views

Help to understand explain plan in Oracle

I am running a query in some big tables, and although it runs fine even tough is a lot of data, I'd like to understand what part of it weighs on the execution. Unfortunately I am not too good with ...
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votes
1answer
427 views

Import an Oracle dump file using a second server

I want to import a dump file into an Oracle server, SRV1. Due to space constraints on SRV1, I cannot copy the dump to the server and then import it. I copied the dump to another Oracle server, SRV2 ...
1
vote
1answer
9k views

How to make stored procedure with outputs OUT sys_refcursor, OUT varchar2, and OUT number, then use in c#.net app

What is the syntax for a stored procedure that outputs a refcursor, a varchar2, and a number? I would like to output all three in the result, for the purpose of displaying count, and a message which ...
5
votes
1answer
164 views

how do I configure a new Oracle 11g instance to match the configuration of the old Oracle 10g server

How can I compare two Oracle database servers which are on two different machines? We need to ensure that the new server is setup correctly. For example, one machine is running Oracle 10g on ...
1
vote
1answer
239 views

INDEX Creation Advice Oracle

I have a table that has time data of 2 billion records obtained from the clients. The data has two main columns, date and entity_id. The attributes date, and entity_id would make a unique pair. ...
4
votes
2answers
2k views

Updating rows conditionally with a gapless ascending value

A user has a table they would like to update. Depending on the data in other columns they want a particular column to be updated with an ascending value starting from 1 that is gap-less. The rows ...
4
votes
1answer
6k views

How can I view what NLS settings are active for other session?

I've got another session that I suspect isn't running with the 'proper' NLS settings for us in Oracle 11gR2. What can I query to show the NLS settings for a different active session - all of the ...
6
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4answers
714 views

Can this business logic be enforced by a conditional database constraint?

I am trying to duplicate the business logic embodied an intranet C# web application in the database so that other databases can access it and work under the same rules. This "rule" seems difficult to ...
2
votes
1answer
3k views

Why Is oracle ignoring my index?

This query is not too complex: select trunc(created_date, 'MONTH') as created_date, al.op_name, al.region, al.alarm_type, COUNT(1) as total_new, SUM( (SELECT ...
2
votes
1answer
6k views

How to convert postgresql dump files to oracle dump files? [closed]

How can I convert postgresql dump files to oracle dump files? If anyone has experience in this, or knows of an open source tool I can use, please share it with me.
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3answers
2k views

How can I ensure that only one copy of a procedure is running in Oracle?

We have the need to ensure that only one copy of a particular procedure is running in Oracle. If it is already running and a user tries to open another, then it should error. Whats the best method ...
0
votes
2answers
3k views

Oracle database link to MySQL database on RedHat Linux

I have an Oracle 11g database on a RedHat server and also have MySQL database on another RedHat server. I want to create a link to the MySQL server from the Oracle which allows me to execute queries ...
4
votes
1answer
544 views

How to I interleave logs from two different Oracle tables?

I have two log tables, which are populated from two different PL/SQL packages. It's often useful to keep the data separate, but sometimes I'd like to "interleave" the two tables so I can see what's ...
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0answers
831 views

ora-07202 when creating standby database

I am pretty new to Oracle database, and I am trying to set up a high availability between two PCs. The first PC runs Windows server 2008 R2, and the second is on Fedora. As far as I have read, with ...
2
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2answers
15k views

Oracle11.2g post-installation problem on Oracle Linux kernel

[question copied from stackoverflow] After installation of Oracle 11.2g in silent mode on the Oracle Linux kernel, I have the following error: [u01/app/oracle/product/11/bin] $ sqlplus sqlplus ...
2
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2answers
20k views

Comparing date and timestamp variables in a where clause in a procedure

I have a variable in an Oracle stored procedure of DATE type (from user interface), and another of TIMESTAMP type (database is more precise than what the user would enter in the code that is executing ...
3
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1answer
136 views

Thoughts about Oracle backup procedure for 11.2 (beginner question)

Two days ago we "found out" that our old, not taken care of, horribly neglected, Oracle DB server was extremely important to our business. The only person who knew anything about this server was ...
3
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1answer
59 views

INDEX on a table where I'm only filtering on a row_number()

I've got the following table (scaled down to a MWE): Fiddle here. CREATE TABLE weekly ( yearnum int, weeknum int, location varchar2(5), weekly_count int, weekly_sum int); INSERT INTO weekly ...