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 DB: Can one db file be shared between table space

Can one db file be shared between table space? I am deleting temp table space as below, Get all the files in table space: SELECT FILE_NAME FROM DBA_TEMP_FILES WHERE TABLESPACE_NAME = ...
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1answer
19 views

Loging queries and their error Text

I need to find out the statements that are unsuccessfully executed in sql, along with their error trace. As of now I created a trigger which is triggered on server error, which stores the sql text and ...
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6k views

Oracle installation requires old rpm versions, what to do?

I am installing Oracle 11g R2 on OEL6. I run the following command, for to check only prerequisites ./runInstaller -silent -responseFile /0/grid/response/crs_install_mk.rsp -executePrereqs It ...
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4answers
12k views

Oracle 12c create user

I have some problem with creating user in Enterprise Oracle Database System. A could'n create user using command like create user name identified by password; because of exception: ORA-65096: ...
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2answers
117 views

SQL*Plus save current COLUMN settings

In SQL*Plus, is there a way to save current COLUMN settings similar to STORE which saves SET commands in a script? COLUMN can be used to list the settings, but they are not in script format.
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3answers
73 views

Finding “islands” of holiday periods for employees

I'm looking for some tips to find a nice solution for my problem: Let's say I have a table, where days of vacation of employees are stored. e.g. CREATE TABLE test_dates ( id NUMBER ...
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3answers
636 views

How do I tell the actual IOPS used by Oracle?

This is hopefully a simple question. We have a large DB deployment that we need to scale up over the next year. For scaling we have been relying on our vendor, but recent developments have caused us ...
13
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5answers
65k views

How to see list of databases in Oracle?

Is there an equivalent to MySQL SHOW DATABASES statement? Is it possible to find databases in a cluster? i.e. databases present on the network on some other system? Could I analyze the files present ...
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2answers
36 views

Understanding RMAN Backupset

I feel a bit confused when I read about RMAN! what are the differences between: RMAN> backup as backupset RMAN> backup database; RMAN> backup database plus archivelog; RMAN> backup ...
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35 views

SPLIT PARTITION issue?

we had written program to ADD partition on every month. But, one of our customer forgotten to execute the program from Jan to July and now, he is facing performance issues (because corresponding table ...
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1answer
424 views

Spool in Shell script not working for me

#!/bin/sh echo "Started at" `date +%Y/%m/%d" "%H:%M:%S` sqlplus -s ${ORA_LOGIN_SYSADM} <<EOF 2>&1 > /dev/null SET SERVEROUTPUT ON SET FEED OFF spool ech.txt create BEGIN ...
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1answer
32 views

Oracle Application Express Listener PDF Report

We need our reports to be available in PDF format on our Oracle 11g, APEX:4.2.6 Followed this tutorial and selected "Oracle APEX Listener". But the generated PDF report is empty. We are using EPG. ...
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13 views

Oracle Temp Table Space - Alias clean up ORA-01119

How to drop the temp table space including alias. SQL> CREATE TEMPORARY TABLESPACE TEMPRM_TEMP; SQL> ALTER TABLESPACE TEMPRM_TEMP ADD TEMPFILE ...
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vote
1answer
532 views

Internal query on CDEF$ and CON$ very CPU bound

I am checking an application (Infor ERP LN) that loads a lot of data into an oracle 10.2 database. While checking one of the user sessions with SQL_TRACE and its output with tkprof, I found that the ...
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1answer
35 views

Can inserting new rows make the RDB not use an index?

Say I have a table with 10000 records. I then delete them and create them again. This is done with "normal" sql, row by row (not some sort of bulk insert (BCP in sqlserver lingua)). Does the ...
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2answers
38 views

Database link from Local Oracle 11g to Oracle Database Cloud Service 11g

We are using Oracle database from Oracle Database Cloud Service, now we are not able to connect Cloud db from Local oracle db. Somehow we created link using below commnd, CREATE DATABASE LINK link_1 ...
3
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1answer
150 views

How can I prevent having inconsistent data under isolation level serializable in Oracle SQL?

I have the following table: InStores +--------+---------+-----+ | ProdID | StoreID | qty | +--------+---------+-----+ | p1 | s1 | 25 | | p1 | s2 | 70 | +--------+---------+-----+ ...
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3answers
3k views

Transfer data from DB2 to Oracle

I want to transfer data from an old DB2 system to a new Oracle database. How should I go about doing this?
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4answers
182 views

What is a DB Link good for?

Here is defined what a DBLink is but I really understand for what kind of situations you need it? What I could imagine is a situation where I have a limited (in size like sql-server express) ...
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1answer
29 views

Why we can FLASHBACK DROP table where it is DDL command and hence autocommited?

DROP and TRUNCATE both are DDL commands and both are autocommited.Then why we can recover DROP table by using FLASHBACK(unless it is purge) and why we can not recover TRUNCATED data(don't consider ...
8
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1answer
280 views

Why would function based indices I’ve created lower the cost but not show up in the explain plan breakdown?

Sorry for the terrible column/table names but since this is for a work project I wanted to insure it was OK to ask. I was just hoping to at least learn why I'm not seeing my functional indices being ...
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2answers
2k views

Oracle schema import is not importing all the tables present in the schema dump file

I have exported an existing oracle schema from another machine and then imported it in my local machine. Import was successful, but some tables which are present in the export dump file are not ...
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3answers
4k views

Advice for ETL from Oracle to SQL Server?

I'm building a data mart in SQL Server which needs to extract each month from an Oracle database. Currently this is done by exporting to flat files, then running all the inserts/updates in SQL ...
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41 views

Upsert - Should I verify the row exists first, attempt an update, or try to insert first?

In a software that I'm working, I have a table with a few columns and a id. In some events in my software, I need to update some column of a record with a certain unique field (other column), but ...
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2answers
56 views

Best Approach to Migrating Oracle to MySQL - Run on EC2 in AWS

I'm trying to migrate an Oracle schema as well as all of the data within the DB to a MySQL database. I want to then make an EC2 app on AWS to kick off whatever I've written for this. Are there any ...
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1answer
30 views

Oracle 11g - drop maxvalue partition, keep data

I have some tables with data like this: CREATE TABLE "PARTTEST4" ("year" number(4,0) NOT NULL ENABLE) PARTITION BY RANGE ("year") (PARTITION "P_OLD" VALUES LESS THAN (2010), PARTITION ...
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1answer
923 views

Not receiving archivelogs from production to remote side

I have a scenario in which we have Designed data guard. Where we have 2 standby sides. One standby is located locally and 2nd standby is located on remote side. The distance between local and remote ...
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0answers
31 views

Fetching the data from the Oracle database is slow in Linux as compared to Windows

I am facing a performance issue in Linux while fetching data from the Oracle database. My scenario is as follows: 1) I have the backend server which is on UNIX with Oracle database running . The ...
4
votes
1answer
59 views

How to install olaptrain sample schema on oracle 12c?

I need to install the sample schema available from the Oracle website: http://download.oracle.com/otndocs/products/warehouse/olap/olaptrain_install.zip I am trying to run the commands as given ...
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1answer
156 views

What's the fastest way to migrate an Oracle database from Unix to Linux?

We have an Oracle database installed on AIX 7.1, and now we want to migrate our database instance to RedHat 6.2. The RedHat server has Oracle 11.2 installed already. What's the fastest way to ...
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vote
1answer
517 views

How do I delete a file that has been locked by UTL_FILE?

I wrote a flakey PL/SQL script that crashed out and forgot to close the file handle (type UTL_FILE.file_type). Now I can't delete the file. Short of restarting the instance or rebooting the box, is ...
2
votes
1answer
114 views

Prevent row from being inserted with a trigger

I'm trying to prevent a row being inserted if a certain condition is met using a trigger. I'm using a user defined exception to do this, however the row is still being inserted, despite the exception ...
4
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1answer
62 views

Oracle Database 12c: Unable to resize system tablespace

Problem: My java application is returning ORA-01691: unable to extend lob segment errors for every insert Cause: After running: SELECT * FROM dba_tablespace_usage_metrics ORDER BY used_percent ...
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votes
2answers
26k views

What is the easiest way to move data from Oracle to SQL Server?

One of our products supports both Oracle and SQL Server as database backend. We have a customer who wishes to switch from an Oracle backend to Microsoft SQL Server, which isn't a typical transition ...
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vote
3answers
13k views

TNS-12535: TNS:operation timeout

I have Windows Server 2008 R2 with Oracle Client 11.1.0.7.0 client installed. TNSPing to 100% available databases (accessible from other machines, i.e. I can do TNS ping to these databases from other ...
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: ...
4
votes
3answers
125 views

Oracle - restore a single table

In a large database, an activity was performed to upload the data. Due to some mistake, a month's data was entered again, which was left in the temp holding table. So, to cover this up, we took dump ...
0
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1answer
1k views

Invalid date format in SSIS

I am using BIDS to export data from Oracle to SQL server. I am using OLEDB source and destination. I have around 6 datetime fields in ORACLE out of which two fields give no problem while 4 fields give ...
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1answer
1k views

sqlplus is not starting

I have a strange error on a Red Hat machine. InstantClient is installed in and ORACLE_HOME is set to /opt/oracle/product/112030_cl_64/cl/ The user which installed the client was oracle:oinstall. My ...
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vote
1answer
3k views

Root cause for Invalid arguments in call (ORA-17068)

We are getting Invalid arguments in call when we try to establish the connection with Oracle DB occasionally ( One hour in a day). I did some research about this in Internet, still i am not getting ...
1
vote
1answer
3k views

netca failed during installation of Oracle 12c on Windows

I have installed Oracle 12c on Windows Server 2008 and during installation it shows the following warning: [INS-20802] oracle net configuration assistant failed When I click retry it continues ...
2
votes
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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2answers
279 views

Specify NLS-Settings during Oracle installation under Windows

Is there an easy way to specify NLS parameters for the database during the installation? We want to install a new database (environment: Windows). For testing purpose we need NLS settings for ...
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votes
1answer
3k views

ora-12705 cannot access NLS data files or invalid environment specified

I have i'm installing oracle in machine 12c, while installing everything goes smoothly but when it reach to database creation it passes two step. cleaning up failed stat copying database file ...
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vote
2answers
5k views

How to recreate or restore Corrupted Data Files in Oracle 11g

Few days back ago my power cable went down and I was working in Oracle. So after power cable restoration when I tried to login to SQL PLus: It did not let me to login and I got error "Oracle ...
2
votes
2answers
375 views

Check if an index exists by comparing columns

We are currently using ALL_IND_COLUMNS to check if an index exists by its name or the columns it is using. The problem is that we can only check if the index exists with columns in a specific order. ...
2
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2answers
172 views

exporting DDL of all views Oracle

How can I go about exporting DDL of all my schema views in single .sql file ? I've read there is a function DBMS_METADATA.GET_DDL But I can't figure out how to use it for my case. I know how to ...
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vote
4answers
86 views

What is the best way to create a table with 800 columns in a single script?

I prepared a script to create a table with 800 columns but SQLPlus and SQL Developer are not reading the whole script as they probably read only 7499/2499 characters max. As an alternative I am ...
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2answers
48 views

RMAN 11g/12c Client compatibility

I'm having a Recovery catalog database 12c version. While I'm trying to register the target database (11g) with the catalog I get the following error: Recovery Manager: Release 12.1.0.2.0 - ...
2
votes
2answers
29 views

Oracle Database 12c: TNS:permission Denied (CentOS)

(This post has a similar title to another post but the underlying cause and solution are totally different.) Problem: I can't login to sqlplus as sysdba but the listener seems to start ...