Oracle is a RDBMS (Relational Database Management System) created by Oracle Corporation. It supports a large number of languages and application development frameworks. Its primary languages are SQL, PL/SQL and Java. Also included is support for C (Pro*C, OCI and EXTPROC), C++ (OCCI) and Java (JDBC) ...

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Oracle 11.2 using too few memory

it is about one year that I have changed my server from Oracle 10g to 11.2g (and also changed the hardware and Windows from 2003R2 to 2012). The problem is that with more than doubled cpu power, ...
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1answer
319 views

Unable to migrate local database to RDS instance

I recently created an MySQL instance on Amazon RDS. Unfortunately, I'm not able to connect to the instance from the MySQL command line. I will brief you the details. 1) I want to move/migrate my ...
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2answers
4k views

Moving a table to a different tablespace in Oracle using Online Redefinition Vs Alter table move tablespace

I have a table with 1 Billion records with size 300GB to move to different tablespace. My question here is - What is the advantage of using DBMS_REDEFINITION (Online redefinition) package over Alter ...
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1answer
70 views

Specific issue on data pump API in oracle

I have a client/server architecture. Using an Oracle dbms on the database server side. I need to perform a user-triggered (from client side) backup of the database, where the best way to perform that ...
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3answers
77 views

Invalid create index syntax

I cannot create index with the where clause. Refer the below query: CREATE INDEX c_bplocation_isdefault ON c_bpartner_location (ad_client_id,c_bpartner_id,isdefault) WHERE isdefault = 'Y';
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2answers
415 views

How to reuse code in Oracle Script?

I have a script where I am creating some test data. At the beginning of the script I create some tables where I have to insert the data. Before creating them I check that they do not exist. declare ...
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0answers
264 views

How to startup a oracle database with sql plus or with any developer tool without connecting to the Database

How to startup a database without connecting to Database. Actually what I did is I shutdown my database and then my sql plus screen hanged and so closed unhandled. then I tried to connect my ...
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1answer
263 views

Oracle dump to csv an keep NULL as empty string

I have the following sql file: SET COLSEP ';' SET ECHO OFF SET FEEDBACK OFF SET TERMOUT OFF SET PAGESIZE 32766 -- Maximum number we can set. -- i.e there will be duplication of ...
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0answers
3k views

sqlldr error - Invalid number

I am trying to load the following csv file into a table: TIMESTAMP ; SESSIONID;PROXY_SESSIONID; ACTION;USERNAME ;USERHOST ;OS_USERNAME ;CLIENT_ID ...
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1answer
127 views

Mutiple updates with FORALL

I have 2 tables, one is a fact table (100000000 records), and the other is a catalog (2000), I need to update the FK at the fact table, can I use for all in this case?. I wrote this but it doesn't ...
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0answers
663 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 ...
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1answer
621 views

00911. 00000 - “invalid character”

I am completely new to Oracle DB Administration an PL/SQL. I get an "invalid character" error trying to execute the following code in Oracle SQL Developer. This is my first statement in PL/SQL. SET ...
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0answers
33 views

Preventing unique key constraint violation when pre-existing row has 'expired' [duplicate]

I have the following table schema; CREATE TABLE LOCKS ( lock_uid INTEGER NOT NULL, file_uid VARCHAR2(32 char) NOT NULL UNIQUE, owner VARCHAR2(255 char) NOT NULL, expires DATE NOT ...
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1answer
76 views

Modify an Oracle Dataguard destination database

I'd like to set up some Oracle triggers to take action after rows are inserted, but I can't do this on our production database because it's controlled by a vendor. One alternative I was looking at is ...
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1answer
167 views

How to use variable and drop in test script?

I have to modify certain Oracle Packages. Basically I will be extracting functionality and moving it to C. They provided me with some "Test" scripts that I shoud be able to run to test that my ...
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2answers
250 views

Dual table default value?

This link clear some of the queries about dual table. But now I am having following doubt is the execution of two queries on dual table: Query 1 Select * from dual; output: D - X Query2 ...
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2answers
1k views

Alternatives for Dblink in oracle?

we have an SSIS job that inserts data into a table in server A from data in table which is located in some other server B. For this,we are making use of dblinks to connect to other database . But, ...
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1answer
3k views

Using EXECUTE IMMEDIATE inside PL\SQL Block

Using EXECUTE IMMEDIATE inside PL\SQL block makes the whole block commit immediately. begin INSERT INTO Customer ( GUID, STATUS, NAME) VALUES (1,1,'xx'); EXECUTE IMMEDIATE 'CREATE TABLE Shop ( ...
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1answer
5k views

Oracle program “lsnrctl” is missing after the installation of 32bit Oracle client

I cleaned up my computer for all old Oracle stuff using Uninstall (OUI) and then later used regedit to delete all references to Oracle and then deleted all remains of Oracle directories. I have HP ...
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1answer
120 views

Oracle: index vs. table stats [closed]

In Oracle, when would I want to gather index stats, instead of just gathering stats on the table? In which use case would index stats make a difference?
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1answer
116 views

DISCONNECTION (bad value of SQLNET.EXPIRE_TIME)

We start a database without sqlnet.ora file. So as SQLNET.EXPIRE_TIME is not configured, some process has been disconnected. We had sqlnet.ora with a SQLNET.EXPIRE_TIME=1, restart the listener but ...
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2answers
62 views

oracle database login information

In a database there is a username called u1, someone tried to access u1 but due to wrong password it got locked. How to find who did this suspicious activity.
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0answers
131 views

Oracle: separate column histograms for partitions

I have a partitioned table like MY_TABLE(PART_KEY, DATE_KEY, ...) with a local partitioned index on (PART_KEY, DATE_KEY). When I collect stats on the table, I end up with a HEIGHT BALANCED histogram ...
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1answer
103 views

SYSDBA privileges of viewing users table

Is there anyway which would restrict sysdba from watching the users tables. It sounds ridiculous but we sort of need this functionality. We only want sysdba to act as administrator only, no peeping ...
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0answers
247 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) ...
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1answer
407 views

Oracle using index on partitioned table when full scan would have been better

Trying to make some sense out of this observation in Oracle. Query: SELECT ... FROM MY_TABLE WHERE PART_KEY=x and DT_KEY between 20120101 and 20120731 Uses an index scan on PART_KEY/DT_KEY, even ...
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1answer
17 views

Oracle ASMM - Are specific values ignored?

I've inherited an 11.2.0 DB and I'm trying to do some performance tuning. At present, it's started from a pfile and it looks like ASMM is enabled (SGA_TARGET, SGA_MAX_TARGET and PGA_AGGRIGATE_TARGET ...
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0answers
25 views

Table,View and Synonyms [duplicate]

Can anyone tell what are the usage of Table,view and synonym also difference between these things.And my major doubt is if i did something in synonym it will affect the real schema object.
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1answer
167 views

Update Statement in SQL

I have one table named as temp_stock_reco. I have created one procedure for update two columns in that table. CREATE OR REPLACE PROCEDURE TEST_RECPT_0705 is CURSOR RECEIPT IS select ...
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2answers
72 views

Decode Function in Oracle

I have a table named as transaction,in that table trans_type column is there.I want to check the trans_type like bellow if(trans_type = 'AR','AD','AF','AG') then trans_type:='A'; elsif trans_type = ...
1
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3answers
207 views

Mysql to Oracle communication

I have a website running with php and mysql on Centos(Amazon instance). The newly brought ERP(to be integrated with existing system) uses Oracle as db(located on a separate Windows Server). The orders ...
0
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0answers
293 views

connect to oracle db server remotely

I have Oracle 9i db installed on machine connected to the internet behind nat ,and the Oracle DB server is listening on default port 1521,and when I connect over lan to DB server its worked ...
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0answers
1k views

Uninstalling Oracle Database Products: Which & How to?

Long time reader, first time poster. For our client's project we are using Oracle 11g. It's a simple C# web application so we are using Oracle's most basic components. Now my project team has been ...
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1answer
213 views

Error exp oracle XE on centos

i have a problem when i try to export ... Connected to: Oracle Database 11g Express Edition Release 11.2.0.2.0 - 64bit Production Export done in WE8MSWIN1252 character set and AL16UTF16 NCHAR ...
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0answers
765 views

Oracle parallel query: finding out which Producer a Consumer is waiting for

One of our materialized view refresh's (part of a daily ETL routine) was hanging today; it usually completes within 5 minutes, but this time, I had to kill it after 23 hours. V$SESSION contained this ...
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0answers
681 views

Impdp over DB_LINK failing with ORA-31631

I am getting below error message while trying to execute impdp between our SIT and UAT environments: ORA-31631: privileges are required ORA-39149: cannot link privileged user to non-privileged user ...
1
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1answer
158 views

How can I insert records 'into null' in Oracle?

I'm looking for a way to insert records into a 'black hole'; i.e. execute a query for a certain table successfully, but make the records disappear. Something like INSERT INTO NULL, if you will. MySQL ...
4
votes
2answers
3k views

Can't drop UNDO TABLESPACE

We have Oracle 11gR1 RAC two instances on two different servers, new undo tablespace UNDOTBS20140508 created 30G, I want to remove the old one UNDOTBSX02, I did the following: CREATE UNDO TABLESPACE ...
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0answers
70 views

ORACLE 10.2.0.5 DB: How can I start replication of an existing schema into a new database with zero downtime

Please, note that I'm limited to Materialized view replication and datapump, so my question is whether the above can be done within my specified scope: Ensure no transactions in the database for ...
0
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2answers
4k views

ORA-00119 & ORA-00130 when trying to startup Oracle

I'm having a problem with an Oracle database. Yesterday everything was working fine, I had an application that was using the database and there was no problem. At the end of the day I installed MySQL ...
4
votes
6answers
86k views

Connect to sql plus from command line using connection string

Let's say I have a Oracle database. I have a username = x, password = y, database = z. Also I know the port = a, SID = b, Hostname = c. So how do I need to connect correctly? I used many options ...
2
votes
0answers
146 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 ...
0
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1answer
725 views

lsnrctl: cannot execute binary file: Exec format error [closed]

When I type lsnrctl from my command prompt the below error message is displayed: oracle@Gaurav:~$ lsnrctl bash: /u01/app/oracle/product/12.1.0/dbhome_1/bin/lsnrctl: cannot execute binary file: Exec ...
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0answers
167 views

Find out profile creation date

Our DBA says that a specific profile was created but we cannot find out its name (and it wasn't provided by the DBA). We want to find out by looking at the profile creation date. How does one find ...
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1answer
469 views

Is it possible to do flashback after truncate?

Is there any possibility of doing flashback after truncate ? Thank you in advance.
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1answer
77 views

Oracle optional select value

I'm writing query to select students with their Program, Country and Teacher. So far, I have the following query: SELECT H.STUDENT_CODE, H.FIRSTNAME, H.LASTNAME, H.PROGRAM, ...
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1answer
4k views

Using OPENQUERY to execute a script

I have a SQL Server 2008 instance which I want to use to import data from an Oracle server. I have set up a linked server that works correctly when running simple queries like SELECT * FROM table. ...
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1answer
250 views

How can I set block size on Oracle 11 when creating a database instance

Is there any way to configure Oracle 11g's default block size on installation? I have tried Oracle 11g r2 and r3, during both installations block size is 8k and it is disabled (and can not be ...
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1answer
59 views

PHYSICAL_READ_BYTES_DELTA and PHYSICAL_READ_BYTES_TOTAL

What is the difference between PHYSICAL_READ_BYTES_DELTA column and PHYSICAL_READ_BYTES_TOTAL column in DBA_HIST_SQLSTAT table? Are they correlate? Please provide also an example.
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1answer
200 views

Why does the CBO not chose a lower cost skip scan without stats?

In the script below, the CBO chooses an INDEX FAST FULL SCAN over an INDEX SKIP SCAN (this is illustrated by the queries with the UNION ALL but you can demonstrate it is true with just explain plan ...