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

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1answer
106 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
100 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 = ...
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2answers
1k views

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
15k views

Completely uninstall Oracle server on Linux

I have searched lot in Google for how to uninstall Oracle on Linux, but I can't figure it out. I think that I need to reinstall the server because I get a lot of errors when I try to startup the ...
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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 ...
2
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1answer
777 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
455 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.
2
votes
2answers
218 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 ...
2
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1answer
4k 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 ...
2
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1answer
981 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?
2
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1answer
423 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 ...
2
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1answer
561 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
20k 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
116 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
76 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 ...
2
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1answer
129 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
89 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
515 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
97 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
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1answer
200 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
665 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). ...
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1answer
617 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 ...
2
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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, ...
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2answers
709 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 ...
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2answers
3k views

Oracle 11g installation stuck at installation

I'm trying to install oracle 11g on fedora by following this tutorial but it stuck after I click Next in step 8. The screen does not go away even after several hours. There's no log file in ...
2
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1answer
262 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
7k 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
2
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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
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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 ...
2
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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
545 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
168 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 ...
2
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1answer
2k 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
votes
1answer
721 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 ...
2
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1answer
368 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
votes
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 ...
2
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1answer
205 views

May I Convert Non RAC db to an RAC DB and add on a Node?

Currently my work env as 1 node none RAC database 11gR2, we are getting another machine (Linux), so I need to add on this node to our currently env and becoming a RAC db. What is the best way/route to ...
2
votes
1answer
6k views

Oracle Wallet Setup ORA-12578

I am having trouble setting up the Oracle Wallet on a new box connecting to a new database. I have added the following lines to my SQLNET.ORA: SQLNET.WALLET_OVERRIDE = TRUE WALLET_LOCATION = ...
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1answer
4k views

Best methods for ingesting XML into Oracle 11gR2

I have a large Oracle 11g Instance. I now have a requirement to convert large amounts of XML into records in several related tables. The xml will arrive frequently at irregular intervals. The ...
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1answer
817 views

How to configure so the Oracle wallet password can be authenticated with a web based Oracle application?

Does anyone know how to configure it so that the Oracle wallet password can be authenticated with a web based Oracle application? I’m trying to make secure LDAP connections with an Oracle web based ...
2
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1answer
203 views

SQL query to identify missing hinted indexes

We have a fairly large number of queries using index hints in our 11.2.0.4 database. I recently uncovered some performance issues and found that some of the indexes referenced by the query hints were ...
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0answers
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SELECT stuck giving results from the query result cache, though table has changed

A process that runs every two minutes or so started to misbehave. We noticed it was because the cursor fetched repeatedly 0 rows, even if indeed there were new rows satisfying the conditions in the ...
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0answers
129 views

Should an SCN obtained from one RAC node be immediately usable on other RAC nodes?

I'm seeing ORA-08181: specified number is not a valid system change number and don't understand why. The error happens around once a month from a process that runs every few minutes - so very rarely. ...