Oracle Database 11g Release 2. Please also tag oracle for search purposes.

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1answer
59 views

Oracle Patch Level Differences (Oracle Enterprise Manager and DBA_REGISTRY_HISTORY)

There is a difference in the patch level that I am seeing on my Oracle database. On the Oracle Enterprise Manager, it shows that it is patched up to .7 but on DBA_REGISTRY_HISTORY it does not show any ...
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2answers
109 views

In Oracle what is the difference between STDEV and STDEV_SAMP functions?

We have a query that should return NULL when doing standard deviations in groups that have only 1 row. The normal STDDEV function returns zero. However I found another function called STDDEV_SAMP ...
2
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1answer
54 views

Tkprof in critical environments [closed]

Why tkprof utility is not adviced to be used in production setups? What concerns does it have?
2
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1answer
604 views

How to download Oracle Database 11g release 2 for Mac OS

I have been trying to download Oracle Database 11g release 2 for mac os but in the given link by oracle I can only see Linux x86 and Linux x86-64. Is this ok to use this Linux file for installing ...
2
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1answer
651 views

How can I list Oracle editions granted?

In using Oracle Edition Based redefinition, I am receiving the error: ORA-38802: edition does not exist when issuing the call: DBMS_SESSION.SET_EDITION_DEFERRED("my_edition") I know the edition ...
2
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1answer
9k views

How to grant permissions for User defined type in Oracle

This is probably easy but i can't seem to figure it out. I created my user-defined type as CO_ADMIN. However, the application using the type runs using GS_USER database account. I have granted ...
2
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1answer
118 views

Is it possible to copy mounted database without RMAN?

I need to make a copy of production database for development. For some reason I can't use RMAN. My question is: can I copy standby database while its in mounted state and recovery is canceled? Of ...
2
votes
1answer
113 views

What is this view being used in my query?

I'm running EXPLAIN PLAN on this query: SELECT DISTINCT l.item_num, l.repl_code FROM item_w l JOIN item i ON l.item_num = i.item_num LEFT JOIN item_w r ON l.item_num = r.item_num AND l.repl_code = r....
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2answers
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ORA-12899 when creating varchar virtual column based on numeric column

I have a table with numeric column: create table test (a number(2,0)); Next I want to create a virtual column based on column a: alter table test add (b varchar2(3) as ('A:'||to_char(a))); This ...
2
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1answer
686 views

Altering the location of Oracle-Suggested Backup

On one database, the Oracle-Suggested Backup scheduled from Enterprise Manager always ends up in the recovery area, despite RMAN configuration showing that device type disk format points elsewhere. ...
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2answers
2k views

Create Oracle ASM Disks Without Installing Oracle

I have been asked to setup workstations (VMs) for an instructor's Oracle 11g R2 Workshop. I am finding the documentation that was downloaded from the Oracle Academy site extremely underwhelming. I am ...
2
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1answer
3k views

Specify Server for DBMS_Scheduler Job in Policy Managed RAC

A unit test requires a dbms_scheduler job to run on the same RAC node as the unit test is being run from. I know that with an Admin managed database this could be done by creating a service that ...
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1answer
820 views

Blocking incoming database links

Let's say there is an Oracle database A and another Oracle database B. Our database is A. Is there a way to block database links from B to A?
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2answers
5k views

Oracle 11g R2 - same query sometimes fast, sometimes slow

I have a simple update query on a table with about 100 rows in it: UPDATE RESULTS_DATA SET IMAGE_BLOB=:myBlob WHERE MEASUREMENT_INDEX=:mIndex AND BATCH_ID=:batchId AND SYSTEM_ID=:sysId ...
2
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1answer
469 views

Error creating linked database to oracle

CREATE DATABASE LINK myLINK CONNECT TO username IDENTIFIED BY password USING 'PROD'; OPT= (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.6.1.5)(PORT = 1521)) ) ...
2
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1answer
1k views

SQL on Mac OS X

I'm looking for something like "Oracle database express" to be used on a mac. I hope this question won't offend anyone though. I'm absolute beginner on sql. Your suggestions are most welcome.
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2answers
221 views

Overhead of DBMS_Profiler

If I use DBMS_Profiler to profile a long running (5 hour) PL/SQL script, how much longer should I expect the script to run with profiling? I realize this will be dependent on what the script is doing,...
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1answer
5k views

RMAN & Archivelog Deletion Policy confusion

Never been able to fully grasp the notion of delete input/delete input all when backup up Archivelog with rman. Tied to the same issue is the configure Archivelog deletion policy to backed up X times ...
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1answer
1k views

Oracle Active Session Pool Questions

what is oracle active session pool? is it activated by default? what is the default maximum active session that there is per user?
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1answer
443 views

Oracle Stopping - Can't Login All Of A Sudden -

I'm having a problem with Oracle, it happens randomly around once in three weeks or once a month. The instance that i'm using suddenly hangs, and no logins can be established to it.It won't accept ...
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2answers
2k views

Materialized views use older dbms_job instead of scheduler?

Very new to this topic - using 11g. When I create a materialized view, a matching job (not a scheduler job) is created. But it's my understanding that dbms_job is being replaced by dbms_scheduler. ...
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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 ...
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1answer
566 views

Recover Oracle database after drive loss Interview Question

How would you answer this as an interview question? The database crashed and you lost a drive containing one of your control files and another drive containing an entire redo log group. You ...
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2answers
22k views

Where all can the /*+ PARALLEL */ hint be used?

It works with SELECT and UPDATE statements. Are there some more statements with which it works? I was able to use it with create, but am not sure if the hint was actually considered. SQL> create ...
2
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1answer
156 views

LGWR is switching frequently in every 3,4,7 minutes. what should i do

I am running Oracle 11g R2 single instance on Linux 6.7. Data guard is also configured. In a database I have 4 groups of redologs, each group has 2 members and each logfile size is 200mb. The ...
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2answers
79 views

Performance improvement after table analyze

I used a function that contains 3 tables a,b, and c. Table a has an index ind1 on two columns. I call a stored procedure that contains code and gets data using the above function. I analyzed my ...
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1answer
257 views

Unable to turn off automatic memory management (AMM)

i am running oracle 11.2.0.4 SE RAC on Red Hat linux 6, the database is using ASM for datafile management i have been experimenting with turning on AMM and set the following parameters alter system ...
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2answers
92 views

Select Count of one table into another

I have one SQL statement as: SELECT ARTICLES.NEWS_ARTCL_ID, ARTICLES.NEWS_ARTCL_TTL_DES, ARTICLES.NEWS_ARTCL_CNTNT_T, ARTICLES.NEWS_ARTCL_PUB_DT, ARTICLES.NEWS_ARTCL_AUTH_NM, ...
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2answers
812 views

What will happen if I drop SYSAUX tablespace from Oracle 11G

As there are two mandatory tablespaces in Oracle SYSTEM and SYSAUX. They have mention on docs 1 " You cannot drop the SYSTEM tablespace. You can drop the SYSAUX tablespace only if you have the SYSDBA ...
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3answers
163 views

Calculating overlap between groups

I have a table with two columns of interest, item_id and bucket_id. There are a fixed number of values for bucket_id and I'm okay with listing them out if I need to. Each item_id can appear multiple ...
2
votes
1answer
220 views

Oracle 11g connect overhead

Currently one of our new applications is connecting to an Oracle 11g instance over 30,000 daily (at every user request) via their application server, using the same account. (it will be significantly ...
2
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1answer
751 views

SQLDeveloper.exe itself is getting access denied

Installed Oracle 11g and the 11g client. Everytime I start SQLDeveloper it prompts for the java.exe and again which files to associate. It must be trying to save this in registry (or maybe disk). I'...
2
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1answer
755 views

transactions and Oracle dblink

I have 2 dbs, let's call them writedb and readdb. Readdb has a dblink to writedb and a view to a table over that dblink. I do an update on writedb to that table which view points to and then read ...
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1answer
10k views

Connected to an idle instance; trouble creating DB

I tried to connect to my database and got Connected to an idle instance: C:\>sqlplus / as sysdba SQL*Plus: Release 11.2.0.2.0 Production on Mon Sep 22 19:07:34 2014 Copyright (c) 1982, 2010, ...
2
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2answers
756 views

SQL query for next occurrence of specific date

I am working on a function for our database that contains contract data. Each contract expires on a certain date, and then each contract has an expiration type that determines what happens after that ...
2
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1answer
7k views

Truncating Table Partitions Containing Data and Global Indexes

I have to truncate a partition (392,000 records) of a table with 20.000.000 records. At the moment, I'm making a truncate table and rebuilding indexes. But the table has 37 indexes and it takes 20 ...
2
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1answer
282 views

Backing up Oracle home directory while instances are running

Can I take a backup of Oracle home directory (with cp -r) before upgrade while the instances using the home are running or is it required to shutdown instances first? Trace files/alert logs are in ...
2
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1answer
2k views

Is there a way to explicitely have a not-null column in a view

If I create a view in Oracle, the column definition's not null characteristic is inherited from the base table: create table tq84_t ( col_1 number, col_2 varchar2(15) not null ); create view ...
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1answer
8k views

SP2-0750: You may need to set ORACLE_HOME

I am getting following error message when i write sqlplus on command prompt SP2-0750: You may need to set ORACLE_HOME to your Oracle software directory Here are the path details
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1answer
4k views

where is oracle session timezone set?

I have a logging table CREATE TABLE EMAIL_LOGGING ( ID NUMBER(9) NOT NULL, SEND_DATE TIMESTAMP(6) DEFAULT LOCALTIMESTAMP NOT NULL, ...
2
votes
1answer
5k views

Data Migration from Oracle to SQL Server [duplicate]

If you need to do a data migration from an Oracle database to SQL server, what approaches and technical solutions are the best practice? Our database has about 100 million rows and a total of 52 ...
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2answers
2k views

Unable to start Oracle Database Server : Get an error as I try to start it

I just installed Oracle Database Express Edition 11g Release 2 for windows.It created a short cut icon on the desktop : but as I click this icon I see this dialog box : What is it ? How do I ...
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1answer
1k views

oracle streams - how to get last successfully applied scn for crashed apply?

I have a downstream Streams replication set up between Oracle 9i (source) and Oracle 11g (destination). The process is still in developlment stage, so the whole setup is not stable yet. Sometimes my ...
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1answer
2k 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 ...
2
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1answer
555 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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1answer
172 views

Use of hash functions in group by?

I'd use a listagg() to generate a list of components a certain customer has and compare it to another list generated the same way somewhere else to detect inconsistencies. The problem is that ...
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1answer
3k views

Can RMAN duplicate be used to “replace” an existing database?

I have an unused database B, not valuable. I'd like to make a copy of database A, but do not want to go through all the manual steps RMAN requires to set up the auxiliary database. Can I use RMAN ...
2
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1answer
733 views

Reverse engineer Oracle database in visio

Trying to reverse engineer tables added into a database but when i connect, I get strange Chinese symbols with a lot of apex stuff. I dont see anywhere the tables that i added, what am i doing ...
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1answer
376 views

Rman not replacing logs with same name on networked drive

Historically, rman saved logs by replacing files of the same name so that the most recent set was always there, and logs from backup of older than the most recent set simply went away. Rman is ...
2
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1answer
4k views

Oracle DB hanging after upgrade to 11.2.0.3

The database is hanging randomly (with some leniency I would say almost each hour). Top session is: select privilege# from sysauth$ where (grantee#=:1 or grantee#=1) and privilege#>0 or select /*...