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

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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 ...
2
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1answer
2k views

oracle blocking sessions

I am trying to investigate some concurrency issues on Oracle 11 RAC. So far the most helpful tool I have is "blocking sessions" view of the Enterprise Manager, which tells me which query is blocking ...
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2answers
1k views

Why does my query run faster after I force full table scan?

I have a MERGE statement that took forever to execute the select as the table it is running from (SUB_DATA) is rather big (read 1.4 Tb, 700 million rows). My SELECT looks like this. SELECT ...
2
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1answer
4k views

Why Is oracle ignoring my index?

This query is not too complex: select trunc(created_date, 'MONTH') as created_date, al.op_name, al.region, al.alarm_type, COUNT(1) as total_new, SUM( (SELECT ...
2
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1answer
13k 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 ...
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1answer
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Error ORA-12560 when trying to connect Windows SQL*Plus client to Oracle 11g Linux server

I installed 11g on Centos VM on my mac.I have everything up and working on server.I have included following command I ran on cenos. $lsnrctl status LSNRCTL for Linux: Version 11.2.0.1.0 - Production ...
2
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1answer
212 views

Does a DDL in Oracle affect other transactions?

I understand that DDL statements in Oracle have an implicit commit before and after the statement, which obviously affects the current transaction. However, does a DDL statement in any way affect ...
2
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2answers
640 views

Duplicating a Database with RMAN

I would like to duplicate to the same server Oracle Database with RMAN. I've configured flash recovery area for Oracle Database. My database is using SPFILE as shown below. SQL> SELECT ...
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1answer
4k views

how to create and insert into a table in an anonymous block

I have PL/SQL anonymous block that creates a table (using execute immediate) and then inserts data into the table. When the block compiles, it gives me an ORA-00942: table or view does not exist ...
2
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1answer
3k views

Can you have multiple Oracle ACL files?

I have an application which needs to send emails through Oracle triggers. I understand that in Oracle 11g you must have an ACL file to grant certain schemas access to the network. My plan was to ...
2
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1answer
2k views

Recover database until cancel without prompt?

The statement: RECOVER DATABASE UNTIL CANCEL prompts once to select the archive log file. Is there a way to pre specify the value so as to be able to use it in a script without prompt? I have ...
2
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2answers
813 views

Oracle symmetrical one-way replication for cheap HA: unfashionable or technically unfeasible?

We have two smallish unrelated databases on two big Oracle Enterprise servers. Instead of buying more licenses and servers for high-availability replicas, can we replicate database B to server A and ...
2
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1answer
22k views

How do I grant execute permission to an Oracle database user?

I'm trying to call a Java function from Oracle database that does the following: Process p = Runtime.getRuntime().exec("..."); When I try to run it, I get the following error: ORA-29532: Java call ...
2
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1answer
570 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? ...
2
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1answer
476 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 ...
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2answers
1k 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 ...
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1answer
1k 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
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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 ...
2
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2answers
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Automate - recover database using backup controfile

I am trying to automate a periodic clone of a database from one environment into another changing the database name. I have done this many times manually by doing a begin/end backup on the source ...
2
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2answers
207 views

sqlplus (Oracle XE) doesn't start on CentOS 7

I followed the steps of this document: https://docs.oracle.com/cd/E17781_01/install.112/e18802/toc.htm#XEINL121, but sqlplus doesn't start. Even if I used the command: "sqlplus /nolog". The other ...
2
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1answer
819 views

du of directories in a diskgroup in Oracle ASM

In Linux, you could run the below on a directory to find the size of each sub-directory: du -sh * When you're in asmcmdin the +FRA disk group for example, how can I retrieve the size of each ...
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1answer
3k views

Cannot remotely connect to oracle express

I have installed Oracle Express in a oracle-6.5-x64 virtual machine (let's called it host). The installation went fine, I am able to connect and run commands using SQLPlus from the host. Now I'm ...
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1answer
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ORA-00922 encountered in Oracle 11gR2 installer

I've just run the installer for Oracle 11gR2 on a Windows Server 2008 (64-bit) OS. I encountered the "ORA-00922: missing or invalid option" error at the last stage of installation when it was doing ...
2
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1answer
625 views

Rebuild an index while it is being referenced in Oracle

I have come across many articles on this site and on Tom Kyte's blog on the how, whys and whens of Re-building indexes. Note that this question is about whether I can rebuild when there are concurrent ...
2
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1answer
2k views

Changing a materialized view column's length after a change in the base table?

We changed the underlying table column size (length). So the materialized view which is built on that table throws an error now since the MV column still has the old size. This is an Oracle 11gR2 ...
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1answer
16k views

Expanding system tablespace

I need to add new data file into the system tablespace because its running out of space. Are there any precautionary measures I should consider since this is a production environment?
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2answers
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Setting NLS params in logon trigger don't work in oracle 11g

We have a trigger setup so that when a specific user logs in, their NLS session parameters are modified. This used to work on Oracle 10g. We've just migrated to Oracle 11g RAC, and the session ...
2
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1answer
7k views

How to convert postgresql dump files to oracle dump files? [closed]

How can I convert postgresql dump files to oracle dump files? If anyone has experience in this, or knows of an open source tool I can use, please share it with me.
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3answers
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Installing Oracle 11g on Ubuntu 11.10

Does anyone know to how to install Oracle 11g on Ubuntu 11.10?
2
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1answer
471 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
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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 ...
2
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1answer
525 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 ...
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2answers
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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 ...
2
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2answers
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In Oracle what is the difference between STDEV and STDEV_SAMP functions?

We have a query that should return NULL when doing standard deviations in groups that have only 1 row. The normal STDDEV function returns zero. However I found another function called STDDEV_SAMP ...
2
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3answers
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Archive Logs filling up Flash Recovery Area (FRA) space

I got hired to fill a position of DBA that I wasn't quite ready to fill, and while the training is getting me there, I am running close to a potential issue. My oracle 11g database's Flash Recovery ...
2
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1answer
133 views

Foreign Key Constraint over two tables

I am trying to put the following entity-model into practice: We have a list of Payments, each Payment belongs to a certain store and is of a certain payment type (e.g. 10€ maintenance cost in ...
2
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2answers
640 views

Dropping Global Temporary Tables

In Oracle when you try to drop a Global Temporary Table that is in use you get the following exception: ORA-14452: attempt to create, alter or drop an index on temporary table already in use This ...
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1answer
51 views

Tkprof in critical environments [closed]

Why tkprof utility is not adviced to be used in production setups? What concerns does it have?
2
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1answer
329 views

How to download Oracle Database 11g release 2 for Mac OS

I have been trying to download Oracle Database 11g release 2 for mac os but in the given link by oracle I can only see Linux x86 and Linux x86-64. Is this ok to use this Linux file for installing ...
2
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1answer
434 views

How can I list Oracle editions granted?

In using Oracle Edition Based redefinition, I am receiving the error: ORA-38802: edition does not exist when issuing the call: DBMS_SESSION.SET_EDITION_DEFERRED("my_edition") I know the edition ...
2
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1answer
86 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 = ...
2
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2answers
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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
14k 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
2k 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
725 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
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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 ...
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1answer
443 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.
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2answers
215 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 ...