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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2
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0answers
82 views

Fast restore of dropped partitions

I want to test the restore of errorneously dropped partitions of a subpartitioned tables. This restore would consist of three steps: restore the database (or at least the necessary tablepsaces) to ...
2
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0answers
57 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
56 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
420 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
45 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
545 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
205 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
0answers
109 views

plsql procedure gets invalidated

procedure involving dblinks gets invalidated regularly .we need to recompile every time.How to find what is causing the problem in my case procedure p1()--resides in db1 is begin .... select col1 ...
2
votes
2answers
836 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
60 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
3k 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
155 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
906 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
7k 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
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
392 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
votes
4answers
2k 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: ...
1
vote
2answers
1k 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 ...
1
vote
2answers
580 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 ...
1
vote
1answer
4k views

Why Oracle SQL Developer does not need Oracle client?

I installed Oracle SQL Developer from Oracle's web page. It seems to work without a Oracle client installed on my computer. How is that possible? I also installed Toad for Oracle and it seems to ...
1
vote
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, ...
1
vote
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. ...
1
vote
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 ...
1
vote
1answer
219 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) ...
1
vote
3answers
129 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 ...
1
vote
2answers
353 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 ...
1
vote
1answer
1k 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 ...
1
vote
1answer
10k 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 ...
1
vote
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 ...
1
vote
2answers
108 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 ...
1
vote
2answers
107 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 ...
1
vote
2answers
63 views

Not able to select the disk during Oracle 11g Installation

Hi All, During the 11g installation on Win 2012, I am not able to select the available disks which are already stamped using ASM. Any idea what could be the reason? I have tried to select using ...
1
vote
1answer
65 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 ...
1
vote
2answers
948 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 ...
1
vote
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: ...
1
vote
1answer
223 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. ...
1
vote
1answer
85 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 ...
1
vote
1answer
886 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 ...
1
vote
1answer
26 views

Grant privilege to see column names in null constraint violations when inserting in views

My database has two schemas, one with the actual tables and one that is used by an application. The application schema doesn't have any privileges on the actual tables. Instead there is a view for ...
1
vote
1answer
48 views

2 Different Oracle DB Version on same server

Is it possible to install and run 2 different oracle version(11g and 12c)software and db on same server? is it possible then how we can? and if not then why? Thanks Rahul Joshi
1
vote
2answers
87 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 ...
1
vote
1answer
31 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 ...
1
vote
1answer
351 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 ...
1
vote
1answer
2k 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 ...
1
vote
3answers
4k 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, ...
1
vote
2answers
119 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 ...
1
vote
1answer
675 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 ...
1
vote
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 ...
1
vote
2answers
411 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 ...
1
vote
1answer
417 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 ...