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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1answer
481 views

Oracle: UTL_RAW.BIT_OR(2,1) gives me 2 instead of 3. Why?

Why am I getting 2 instead of 3 when I perform BIT_OR(2,1)? SELECT UTL_RAW.CAST_TO_NUMBER ( --> decimal: 3? nope, 2 UTL_RAW.BIT_OR( --> binary: 11? ...
4
votes
3answers
4k views

Is (and if how) it possible in Oracle to “insert into <table> values <rowtype-variable>” if <table> has virtual columns

Here's a table create table tq84_virtual_test_without ( col_1 number, col_2 number, col_3 number, col_4 number, col_5 number ); with the rule that col_5's value is the sum of the other ...
2
votes
1answer
378 views

Oracle ash report

Recently, i have been handed over with an ash report from DBA. To me this report is like french. I have no idea what it is about and what all is written in this report. Can someone please guide me in ...
2
votes
2answers
204 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
votes
1answer
355 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 ...
3
votes
1answer
4k views

How can I delete a corrupted table space?

Problem: On an Oracle 11.2g DB; We have a corrupted TS that does not allow starting the database instance above mount state. The TS cannot be removed with standard methods (i.e., enterprise manager). ...
1
vote
1answer
232 views

Oracle block usage

I am wondering about a weird deadlock and after checking all other components I am considering it to be a INITRANS problem in Oracle 11.2. Now three questions arose: Is there some way of analyzing ...
2
votes
0answers
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
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
758 views

How to compare performances of two databases

There are two database servers and I want to compare their performances. Both have Windows operating system and and Oracle (10.2.0.4 and 11.0.2) database. Both are OLAP databases with 15-20 users ...
2
votes
1answer
294 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 ...
5
votes
1answer
822 views

Are there performance benefits to turning off archivelogging? Is it wise?

The first part of the question is pretty simple; has anyone run a DB in both archivelog and noarchivelog mode? Were there any measurable performance benefits to turning off logging that you could ...
3
votes
1answer
6k views

Oracle 11g hunting down the deadlock, maybe foreign key?

I am trying to understand why a deadlock occurs in my database. The trace tells me that two updates on the same table are locking. In table is the first table to be written to in an transaction, only ...
3
votes
3answers
517 views

What's the most cost effective or cheapest way for high availabity on Oracle Standard Edition One?

We are currently using Oracle Standard Edition One running on two physical database server. If I wanted to get higher availability, what's the most cost effective way or cheapest way to achieve this? ...
0
votes
1answer
198 views

ORA-04020 on Oracle SE1 (11.2.0.1)

We've been experiencing some deadlock issues on our Oracle SE1 (11.2.0.1) database server (Red Hat 5/64bit) Seeing ORA-04020 errors in the logs. Is going to 11.2.0.2 the only way to resolve the ...
1
vote
2answers
2k views

how to verify that next sequence value can be used as a new primary key

I have many tables with a trigger attached like this BEFORE INSERT ON BRULES ...snip... if inserting and :new.ID is NULL then SELECT BRULES_SEQ.nextval into :new.ID FROM DUAL; end if; Due to ...
2
votes
1answer
903 views

Repartition Primary Key Index online in Oracle

I have an 24x7 OLTP (11gR2) application that endures heavy inserts on particular tables, traffic has increased to the point where we are getting heavy index contention. We use sequences for the ...
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 ...
1
vote
1answer
526 views

Oracle 11gR2 - Limits on Materialised View replication between databases

We are about to deploy a 3rd party product running on Oracle 11gR2. The product allows very generic text searches. We'd like to mitigate the performance impact of the searches. Our current design is ...
3
votes
1answer
2k views

Installing 10g client next to 11g database on same computer

I have Oracle 11.2.0.1.0 installed on Windows 7 64 bit I want to import data from warehouse which has Oracle 10.2.0.4.0 installed. When I try to import impdp usr/pass@WAREHOUSE TABLES=TABLE ...
2
votes
1answer
410 views

Virtual Column - Using it in view (Oracle)

I have made a virtual column in Oracle, using the following code. CREATE OR REPLACE function email_address (ID_ varchar2) return varchar2 deterministic as lname varchar2 (256); snumber varchar2 ...
2
votes
1answer
1k views

Differing results from gv$session

The following query returns no results, yet it seems like it should. SELECT * FROM gv$session where SID = SYS_CONTEXT('USERENV','SID'); In my 11.2.0.2 Standard Edition RAC environment the above ...
5
votes
1answer
2k views

Oracle 10g express database link to Oracle 8i

I upgraded a 9i install to 11g with only one problem. Database links between 11g and our legacy 8i database are no longer supported. I have to transfer data from 11g to 8i two or three times a day ...
2
votes
1answer
424 views

Decision tables in the database: a valid solution?

I have to extend a .Net 4/C# case management application that uses Oracle 11g to handle legal cases. I have minimal budget, my experience with Oracle and a very junior C# developer to accomplish ...
1
vote
0answers
411 views

how to move a oracle datafile to another location [closed]

It was different if database is archivemode or not, There are two ways are posted below http://ozcan-yildirim.blogspot.com/2011/11/oracle-veritabaninda-datafile-nasil.html#more or ...
6
votes
4answers
867 views

How do I sync instance A to instance B without losing any of the data already on instance B?

Like I said in a comment below, I'm no DBA and I'm still in a learning process. Here's my scenario : I have an Oracle server running a couple schemas (let' call it Source). What I would like to do ...
3
votes
1answer
6k views

SQL*Loader-605: Non-data dependent ORACLE error occurred

As I try to load data into Oracle, I've encountered SQL*Loader-605: Non-data dependent ORACLE error occurred error. Data is (are?) in .txt file and its size is 95GB. Here are some more details ...
2
votes
1answer
692 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 ...
1
vote
2answers
7k views

How to connect to a local server in Oracle SQL Developer like SQL*Plus with no TNSlistener?

How can I use SQL Developer to connect to a local Oracle 11g server? I didn't enable TNS Listener, but SQL*Plus works well. @update1: I copied all *.jars from ...
1
vote
1answer
176 views

Oracle bitand inconsistent behaviour

I'm working on a legacy database using bitmaps for searching. I'm using the bitand function to find bitmaps that match a given bitmask but I'm getting the wrong results: the bitand between two numbers ...
1
vote
1answer
416 views

schema shows through standard client connection but not through ODBC connection?

Hoping you can help! The Gist When I log into an Oracle 11g DB using SQL Developer or DBVisualizer, I can see schemas and execute queries against them. However, when I use the same credentials to ...
2
votes
1answer
3k 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
3k views

How do I create a database+tablespace+user in Oracle 11gR2?

Good evening, I'm trying to figure out how to create a database+tablespace+user in Oracle 11g. I've tried some tutorials, but nothing seems to work. I cannot find Database Configuration Assistant ...
4
votes
3answers
6k views

Does an Oracle nvarchar2 take twice as much space as varchar2?

Regarding point 4 of this question (which is in reference to MS SQL Server): VARCHAR does not store Unicode characters. NVARCHAR does store Unicode characters. Today's applications should ...
2
votes
2answers
4k views

getting error installing oracle 11gR2: cannot access node

I'm installing Oracle 11.2 on dedicated hosted server (centOS 5.5). I've gone through the Oracle Quick Installation guide diligently. I believe I've set everything up correctly, although I'm not a DBA ...
0
votes
1answer
2k views

Materialized views master table

New to this topic - in my current environment we are not doing any replication but we use materialized views frequently in order to achieve performance gains on complex views that are in turn used by ...
5
votes
2answers
615 views

Oracle Advanced Queuing LIFO

With Oracle's Advanced Queuing is there a way to dequeue messages in a LIFO (last in first out) order? There is an indication through a lack of information that this is not an option, but perhaps ...
2
votes
1answer
7k views

How to display a number with fixed number of digits before the decimal?

I am looking for result 0123.56 and the following query should have worked. SQL> select to_number(123.56,'0999.99') from dual; select to_number(123.56,'0999.99') from dual * ERROR ...
4
votes
2answers
11k views

Which picture does the ORA-01830 error message refer to?

ORA-01830: date format picture ends before converting entire input string About the error message. I am confused. Which picture is the error message talking about? All I provided was a date.
4
votes
3answers
655 views

What are the 'free to use' workload generators available for Oracle? [closed]

A couple that I know about are http://www.dominicgiles.com/swingbench.html and http://hammerora.sourceforge.net/ Are there any others? I am looking for tools what can generate random workload ...
4
votes
1answer
419 views

Help with Query Tuning

EDIT - drachenstern: see this question for more information on this problem and on the source of his query below: Group data by non-unique keys by distinct time range Can someone please advise ...
2
votes
2answers
11k views

SGA_MAX_SIZE and SGA_TARGET

We recently increased sga_max_size to 4g from 2g but didnt increase sga_target, is it ok not to increase sga_target?? reason we wanted to increase sga is to reduce wait time on sequential reads in our ...
0
votes
3answers
243 views

What all are the recoverable points of failure in an Oracle database?

I am testing a product against an Oracle database for failure scenarios. The product talks to Oracle through a session and maintains a few tables. I want to make sure that whenever Oracle recovers ...
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 ...
4
votes
2answers
2k views

Determine Index Compression Candidates Online

By doing the following I can determine if an index will benefit from compression and how many columns should be included in the compression: ANALYZE INDEX Owner.IndexName VALIDATE STRUCTURE OFFLINE; ...
3
votes
1answer
3k views

What does WE8DEC mean?

It is one of the commonly used character sets. What does it stand for? Is it an acronym for something?
2
votes
2answers
5k views

Why can't we specify group functions in Oracle in the where clause?

SQL> desc tab1 Name Null? Type ----------------------------------------- -------- ---------------------------- ID ...
8
votes
2answers
816 views

LNNVL Justification

LNNVL is an oracle built in function that returns TRUE for conditions evaluating to FALSE or UNKNOWN, and returns FALSE for conditions evaluating to TRUE. My question is what would be the benefit of ...
5
votes
1answer
1k views

DROP PARTITION strategy using LIST-REF composite partitioning

We have a large Oracle 11gR2 instance with some tables that have recently become an annoyance when deleting data. This database powers a large optimization cluster that takes input metadata from the ...
3
votes
1answer
1k views

Unable to create a tablespace, unusual error

I'm having difficulty creating tablespaces with Oracle 11gR2 on a fiber attached disk array. Permissions are correct and there is ample space available. I can create tablespaces on other mounts that ...