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

learn more… | top users | synonyms

2
votes
1answer
949 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
votes
1answer
408 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 ...
2
votes
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. ...
2
votes
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
1answer
552 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 ...
2
votes
2answers
18k 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
votes
1answer
77 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 ...
2
votes
2answers
87 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, ...
2
votes
2answers
309 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 ...
2
votes
1answer
50 views

Tkprof in critical environments [closed]

Why tkprof utility is not adviced to be used in production setups? What concerns does it have?
2
votes
3answers
75 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
176 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
votes
1answer
503 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
votes
1answer
9k 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
votes
2answers
662 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
votes
1answer
2k 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
votes
1answer
243 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
votes
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 ...
2
votes
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
votes
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
4k 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
votes
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 ...
2
votes
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 ...
2
votes
1answer
533 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
votes
1answer
164 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
votes
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
706 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
votes
1answer
353 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

when to use embedded PL/SQL gateway with Oracle APEX?

Oracle Application Express (APEX) requires one of the following three options for an HTTP server: (1) Oracle HTTP Server (with mod_plsql), (2) Oracle Application Express Listener, or (3) an embedded ...
2
votes
1answer
3k 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
votes
1answer
200 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 = ...
2
votes
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 ...
2
votes
1answer
786 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
votes
1answer
150 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 ...
2
votes
0answers
145 views

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 ...
2
votes
0answers
113 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. ...
2
votes
0answers
113 views

Replacement for Pragma Restrict references

Up to Oracle 11.1 you could mark a package as only reading from the database by adding PRAGMA RESTRICT_REFERENCES( DEFAULT, WNDS); This has now been deprecated. I would like to enforce read only on ...
2
votes
2answers
881 views

Oracle Data Pump Import imports no records

When we do an Oracle Data Pump import of our database, it runs without significant errors. However, on one table Oracle reports that 0 records have been imported. Processing object type ...
2
votes
0answers
57 views

Importing data into Oracle 12

I got a set of files from a client which are, as far as I can tell, copies of a database in Oracle 11. Each folder has the following structure: - init<DB>.ora - orapw<DB> - arch - dbf ...
2
votes
0answers
851 views

Why OEM RMAN backup jobs fail after changing the preferred credentials?

In an Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production, Running on Oracle Linux 6.5, we configured full RMAN backup schedule using OEM (Oracle Enterprise Manager 11g ...
2
votes
0answers
289 views

Running materialized view refresh in parallel

I have a large materialized view that is refreshed periodically (complete refresh) and I would like to do it in parallel. I can already run the query part in parallel but the problem is (much slower) ...
2
votes
2answers
1k views

Bad bind variable in audit trail trigger in Oracle 11g R2

I have been trying to construct audit trail triggers and procedures in oracle and I am facing a problem with bind variables. Following is the code create or replace trigger trg_audit_trail for insert ...
2
votes
0answers
81 views

Attaching Existing Oracle Home to fresh Windows Install

I have a client who recently was forced to reformat and reinstall Windows Server 2008 R2. Their ORACLE_HOME (Oracle 11g) and all of the data was located on a D: drive that was not reformatted. Can I ...
2
votes
1answer
190 views

What's the most appropriate NLS_SORT parameter to cover all/most European languages?

I'm developing an Oracle 11g-based application which is likely to be used by clients in many different countries (mostly European). I want the program to change its NLS_SORT so that it's case ...
2
votes
2answers
1k 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 ...
2
votes
0answers
10k views

Oracle XE TNS Listener fails to start

I freshly installed Oracle XE 11.2.0.2.0 and found out that the TNS Listener service fails to start. At first I tried to start the Windows service by hand. After the failure this is the entry in the ...
2
votes
2answers
7k views

Run Unix command using PL/SQL

Is it possible to run a Unix command using a query in Oracle? I want to run simple commands (like df -h) using a query. Is this at all possible or am I wasting my time? I don't want to use a ...
2
votes
1answer
1k views

Oracle 10gR2 to 11gR2 upgrade - performance hit [closed]

We've recently upgraded from Oracle 10gR2 (10.2.0.4 ) to 11gR2 (11.2.0.3) and we are noticing a significant hit in performance although execution plans are the same for the offended queries before and ...
2
votes
1answer
421 views

Table Statistics Affect Index Only Query?

We have a query that was getting poor performance. The root of the problem could be reproduced using a simple query accessing only one index to retrieve one column (the indexed column) from eight ...