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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Oracle high Paging Faults

What are the reasons that lead to terrible high Paging faults. The following is the topas information and background about the Environment. OS: AIX 6.1 Softwares: Oracle 11gR2 Paging Space:30720 ...
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735 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, ...
2
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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
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0answers
1k views

ORA-01017: invalid username/password; logon denied

I've come across the abnormal situation, and can't understand what happens. I am connecting databases using PL/SQL Developer 8.0.4.1514(I've also tried v7,but same) . Sometimes(When I am trying to ...
2
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1answer
387 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 ...
2
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454 views

Isssue with Database Links converting OEM Job to DBMS_Scheduler Job

We had an OEM job that would run a PL/SQL block using a particular database users credentials. The credentials are the same for two different databases, so there was no problem for the block to use a ...
2
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4answers
1k views

Why can't I drop this Oracle datafile - even though it seems empty?

This system is Oracle 11.2.0.3.0, using ASM. We had an issue where there seemed to be a corruption issue of some kind - every time a row tried to get inserted into the table, we'd get the following: ...
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2answers
863 views

Using transactions in sqlplus

I'm coming to oracle from postgresql. In postgresql, I can use the command-line tool, psql, to execute a delete or update in a transaction: dbpool.production=> begin; BEGIN ...
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2answers
567 views

Oracle becomes too slow after system crash [closed]

I am using Oracle 11.2 as a database for my application. For this purpose I should import my data (around 100m records) to this database. For this purpose I used SQL Developer. Unfortunately at the ...
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2answers
1k views

Factoring out subselect (with clause) ends in ORA-00904

I am trying fo factor a repetitive subquery with with but getting ORA-00904 over and over again. This is my base query which works quite well: select tka.id, tka.name, txt.text as langname, ...
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3answers
1k views

How to handle big data update based on excel spreadsheet

Scenario Select-based data is exported from DB to Excel spreadsheets. Some manual work is done on the excel files (filling missing data). Changed data from excel files is updated back to DB. ...
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2answers
8k 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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1answer
216 views

Why am I not seeing any benefits of parallel execution when parallel clause is used?

I have these two methods of creating a table and populating with rows. The first one uses a parallel (degree 3) clause, so I expected the inserts to be much faster. But I timed the time taken for a) ...
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3answers
116 views

Oracle static lookup table

What is the best approach (or what options am I not aware of) to creating a static table or view where the data rarely, if ever, changes? An example use-case is a list of US states, where my ...
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2answers
334 views

What is the meaning of “sga_max_size= # internally adjusted”

I used following command to get backup of my spfile. CREATE PFILE='c:/test_init.ora' FROM MEMORY; it has following lines related to memory. memory_max_target=12G memory_target=8G ...
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1answer
992 views

Should a table be partitioned before or after an INSERT?

I have a fairly simple question that is proving hard to search for. I need to create a table that will be partitioned and into which (lots of) data will be loaded. Is it more efficient to create the ...
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1answer
9k views

How do I find out the “redo log file max size” in Oracle 11R2

I'm working with Oracle 11R2 and I want to see the max size of my redo log files (I didn't install Oracle so I'm not aware of the configuration). I have searched the Internet but all I have found ...
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2answers
4k views

Sum values from two tables ORACLE

I want to use two values, in two different tables, to be used as a total in a third table. For instance: table accommodation and flight Add value from acc_price with value from flight_price Add ...
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2answers
102 views

Can install a test machine with Oracle 11G R2, not express edition, on a VirtualBox?

Im starting like a Oracle DBA, and I want play with the database and your administration task in a test enviroment. I have a macbook pro i5, and had thought install on it oracle under virtual box ...
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2answers
93 views

Unit of COST in an Oracle execution plan

Is there a unit for cost in an Oracle execution plan? I mean if the cost of an operation is 50 then can I map this number to CPU cycles or utilisation percentage? What does this number stand for? Is ...
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1answer
64 views

Redundant transpose. Case is not enough to solve my problem

I have db problem in transposing rows to columns. I am half way through the result but getting redundant data. My table: EMP_ID EMP_NAME SAL_PAID 01 ABC JAN 01 ABC FEB 01 ...
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2answers
905 views

oracle tablespace extending

While under massive write (insert and create table as) load, when Oracle RAC needs to extend tablespace, all write activity gets blocked for however long it takes it to finish extending (tens of ...
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2answers
5k views

Granting privileges to dbms_crypto

I'm trying to grant proper privileges for using DBMS_CRYPTO. Whenever I call it from package it gives me error: PLS-00201: identifier 'DBMS_CRYPTO' must be declared User already has privileges: ...
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1answer
220 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. ...
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1answer
83 views

Verify if I can use a given directory

Admin creates an Oracle directory: CREATE OR REPLACE DIRECTORY EXAMPLE AS '\\server\share\test'; GRANT READ, WRITE ON DIRECTORY EXAMPLE TO JOHN; Admin can test whether the directory exists: SELECT ...
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1answer
873 views

Oracle Client vs Oracle Instant Client on Linux!

to have the following setup on a Linux box: SQLPlus client library (oci.dll)!!!! ORACLE_HOME is set for users is Oracle Instant Client enough or I need to have the Oracle Client installed on the ...
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2answers
56 views

Compressing partition - what about index?

To save space on disk I want to compress some partitions of my tables: alter table TEST_TAB move partition TEST_TAB_2014 compress for all operations; I have also indexes on this partition. Should I ...
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1answer
28 views

Does trigger “see” all changes done in the transaction it was fired from?

Let me elaborate on the title. Suppose we have two tables, t1 and t2. t2 has a trigger t2_trgon it. Same transaction inserts/updates data in t1, then does insert/update in t2. t2_trg is fired and ...
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1answer
327 views

Stop NLS settings in init.ora getting overridden by environment variable

We have a databases server that is used for development which has hundreds of database instances for different branches/builds of our application. And we needed an special instance that has ...
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1answer
1k views

Oracle error 12154 while importing DMP file

My Setup I'm running Windows 7 64-bit, using Oracle DB 11g R2 for Windows 64-bit. I have Oracle SQL Developer Release 3.0 (4.0.2.15.21) as the GUI for my database. Question I followed the ...
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3answers
3k views

Remove ORA-01100:DATABASE ALREADY MOUNTED

I am using Oracle 11g and there is a database create during installation name "xyz" and user "xyz".Now i created a user 'abc' and gave following permission to abc. "CREATE SESSION, ALTER SESSION, ...
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2answers
111 views

Oracle result cache behaviour

Oracle by default caching the query results and function results(Buffer cache). I have noticed this with AutoTrace utility, where the physical reads are huge on first execution, but from next ...
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1answer
615 views

Oracle 11g database structural change doesn't autobackup controlfile/spfile

I have configured controlfile autobackup: CONFIGURE CONTROLFILE AUTOBACKUP ON; CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/u02/backup/%F'; Then added a test tablesapce into ...
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1answer
1k views

Delete shared memory segments left over by an Oracle instance

We're using Oracle Enterprise 11rR2 running on Solaris. How can I delete/remove allocated shared memory segments using ipcrm? I'm getting this error: ORA-01041: internal error. hostdef extension ...
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2answers
381 views

Expand sparse table with self outer join on distinct values

I have this: g1 | g2 | x ---------+-----------+----- New York | Monday | 210 New York | Tuesday | 258 Chicago | Monday | 30 Chicago | Wednesday | 25 LA | Thursday | 40 ...
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1answer
400 views

need to use PLSQL to insert distinct rows

I need to take some data from Table A, use some logic, and then insert one or more rows into Table B. I have a PLSQL block that brings in data from Table A with a cursor, performs all the logic ...
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1answer
1k views

Strange behaviour of a query with order by and rownum on Oracle's Exadata server

I am executing the following query on two different database servers: SELECT start_date, end_date, resort_id FROM employee_activity WHERE employee_id = 27 AND start_date < ...
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2answers
387 views

Count events on “user based” sliding window

So, if I wanted to know how many events a certain user bought in certain timeframe windows. I will use 7 for the example, but the query should accept this number of days as a parameter, which will be ...
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1answer
465 views

Change a partitioned global non-unique index that is the primary key to a non-partitioned unique index

One of the largest tables in our system has its primary key setup as a globally ranged partitioned (in huge, useless, multi-billion value ranges) non-unique index. Its values are just a sequence ...
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2answers
1k 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
7k 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 ...
1
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1answer
13k views

Oracle DBCA utility: “Listener is not up or database service is not registered with it”

I'm a software engineer with some experience on SQL Server but a newbie on Oracle. I'm attempting to run dbca on a remote linux machine to reconfigure a database that was initially configured to idle ...
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1answer
2k views

Oracle backup with RMAN Options?

I'm trying to learn RMAN but getting confused everytime I read Oracle docs! Can someone help me what are the differences and when to use the following? BACKUP DATABASE PLUS ARCHIVELOG DELETE INPUT ...
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vote
1answer
4k views

Error calling stored procedure from trigger in Oracle Database 11g

I'm trying to create a trigger that calls some Java code whenever a table is inserted/updated. I'm aware of possible performance issues, I don't need advice that I should not do this; I just need to ...
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1answer
12k 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 ...
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2answers
129 views

Getting ORA-01031:insufficient privileges during first time login to oracle 11.2.0.1.0 database on my windows 8 PC

I installed oracle database 11.2.0.1 on my windows 8.1 PC. I downloaded the zip files from oracle website viz. win64_11gR2_database_1of2 and win64_11gR2_database_2of2. I followed the installation ...
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1answer
300 views

How to set the sequence to the last used id for all tables in Oracle?

I'm working on an open source elearning system called Moodle which usually uses MySql or Postgresql, but can also use MSSQL and Oracle. A client wishes to use Oracle, which I have limited experience ...
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2answers
324 views

Will enabling row movements on list-partitioned table cause performance problems(oracle 11g r2)

Our incident management system has run for years, and the large quantity of closed incident tickets makes the table rather huge and slows down the search queries. Our database version is oracle 11g ...
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1answer
153 views

How to retire a physical standby in Oracle 11.2

I have a production Oracle 11gR2 RAC database with a single node physical standby. Now it has become the time to retire the old standby and pass that role to a RAC on fresher hardware. We don't use ...
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1answer
7k views

ORA-01034: ORACLE not available in oracle 11g

I installed oracle 11g on ubuntu 14.04 and i started lister and the message is as below. LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 10-OCT-2014 14:20:02 Copyright (c) 1991, 2011, Oracle. ...