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0
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1answer
7 views

Oracle 12c : Unable to install sample schemata on Windows 10

I've gone through lots of trial and errors in installing the sample schemata for Oracle 12c and still can't get it right. I have a pluggable database named PDB01. I also have an instantclient ...
0
votes
1answer
146 views

Converting sql into mongodb nosql

I am trying to convert oracle sql into its mongodb equivalent version. create table my_hll as select mod(ora_hash(n), 1024) bucket, max(num_zeroes(trunc(ora_hash(n)/1024)))+1 val from previous_data ...
2
votes
1answer
278 views

Estimating tablespace size

I'm trying to estimate the size of a tablespace using these steps: Space Estimations for Schema Objects and I was little confused about some of the steps. In step 3 for calculating the rowsize I ...
2
votes
1answer
1k views

Finding why an Oracle listener got automatically restarted

I got the following message in the <listnername>.log file. I want to find out the reason why it got automatically shutdown and restarted again with different PID. 03-MAR-2013 03:00:57 * ...
1
vote
1answer
12 views

Statement specific auditing - Oracle

I have enabled default auditing in one of my database. Oracle 11g. Audit_trail is set to DB, other than that for a particular schema 'test' I have set: audit all on test by access With the above ...
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votes
2answers
7k views

sqlplus startup - failure in processing system parameters

I am trying to do the startup command This is what I have done: set oracle_sid=ORCL sqlplus /nolog SQL> conn /as sysdba startup It shows this error message: failure in processing system ...
0
votes
1answer
25 views

Mixed mode auditing - 12c

Oracle 12c database comes with default Unified auditing enabled even if we set it to FALSE which has ORA_SECURECONFIG policy enabled by default. Apparently, the audit options for that particular ...
0
votes
1answer
21 views

RMAN Overhead on the database

What is the overhead of RMAN hot backup (full backup including archive logs) being performed during business hours? Does it actually affect the performance of the database? What is the case when ...
3
votes
1answer
768 views

Do OR conditions in Oracle SQL queries spoil index use / cause full table scan?

I have a query on Oracle 11g of the following type, which results in a series of highly inefficient full table scans: select t.Id, t.ObjectId, t...[other Tasks columns] , od1...[ObjectData1 ...
0
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1answer
17 views

How to export own objects using expdp without special privileges?

As per this post on Oracle forums expdp can be used to export your own schema without any special privileges: It all depends on what you want that user to be able to export/import. If all that ...
1
vote
1answer
22 views

Why doesn't Oracle show my privileges?

I have a user that is able to drop, alter, create tables and indexes. But when I list the privileges for my Oracle user it does not show any CREATE TABLE or other such privileges. How am I able to do ...
-1
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0answers
25 views

Singe database account for all users

Welcome everyone, I'm wondering if one common database account for all users of web application is enough or I should create database account for each user in order to carry out some querying? Can ...
-1
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0answers
14 views

Grant access schema to user [on hold]

Getting error while writing the following query SQL>grant select, insert, update, alter, delete on schema::schema_name to user; showing as missing keyword –
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votes
3answers
26k views

Grant create permission on a specific schema in Oracle 11g

I have two users A and B. I want to grant B the permission to create, drop, etc. all tables in A's schema. As far as I can see, I can grant B full access to all schemas not a specific one. Is this ...
0
votes
2answers
22 views

expdp full export not exporting all schemas

On Oracle 12c, fairly new database with APEX installed. I do a expdp \"/ as sysdba\" directory=dp_dir full=y dumpfile=full.dmp logfile=full.log And I am getting just a few tables from SYS and ...
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0answers
5 views

JMX interface to an API that provides Oracle Database performance statistics [on hold]

Do we have any API that provides Oracle DB performance statistics ? I am looking for such an API and how to connect to it using JMX (if it has any JMX interface)
1
vote
1answer
1k views

ORA-01122: database file 1 failed verification check

I moved data file and database started fine but I did the following steps: SQL> shutdown SQL> startup nomount SQL> alter system set control_files='/var/oracle/oradata/control.dbf' ...
0
votes
1answer
14 views

ORACLE - Trying to return MAX or MIN based on a CASE statement

I'm working on a query to give me either a MAX or a MIN based on whether another column is divisible by 2. SELECT CASE mod(ROLE_TYPE, 2) WHEN 1 THEN MAX(SALARY) ELSE ...
3
votes
3answers
5k views

Is it safe to delete dummy tables Oracle 11g XE

i created a database schema in 11g express edition, however there are some APEX tables and some dummy data... Is it safe to delete them? also i would like to know what does apex means and why they ...
1
vote
3answers
109 views

Oracle union default sort is weird [on hold]

As you know union removes duplicated rows. I thought it removes from the latter ones, but it doesn't. I found out that if there's no order by clause, Oracle sorts the merged dataset by the first ...
0
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0answers
18 views

How to use an external encryption key in an Oracle function?

I am storing People data in an Oracle 11g database. I am implementing symmetric encryption on one sensitive data column in my People table. For this, I created an Encrypt function based on the example ...
0
votes
1answer
28 views

Does Oracle randomly switch execution plans to check if there is a better solution?

I had a talk with an external colleague about oracle "swinging in" its performance. In detail it was about, that oracle optimizes its execution plans for the same query by time. I don't talk about ...
-1
votes
0answers
23 views

Decomposition of complex queries [on hold]

select c.ssn,c.cname,c.address,c.ph,c.age from customer c,account a,acc_cust ac,loan_cust lc where c.ssn=ac.ssn and a.accno=ac.accno and c.ssn=lc.ssn and a.atype='joint' group by ...
1
vote
1answer
151 views

Type with nested table in oracle

I want to create a type with a nested table. I have a table called assignment_tbl which I want to put a type assignment_status. This assignment_status contains primitive types but also contains a ...
1
vote
2answers
106 views

Oracle RAC VIP issue

I have a two node RAC setup where my scan ips are registered in DNS and my public Ips are also registered in the dns. Now while connecting from my windows machine through oracle client in sql ...
1
vote
3answers
102 views

Avoid repeated traversing of hierarchical data when parsing a big tree frequently

I have a hierarchical/tree data structure in Oracle/RDBMS where I need to traverse the tree frequently. The tree is huge and therefore parsing it every time will not be efficient. A better way could ...
0
votes
1answer
134 views

“Oneway” Replication from Oracle DB to TimesTen

currently I'm really stuck into a problem and I not able to finde a nice way to realize that. I need a suggestion to replicate from oracle db (some tables) to a TimesTen. A connection is only ...
1
vote
1answer
138 views

What is the fastest way to clone/copy oracle databases on the same machine?

I want to clone oracle databases on the same machine and I need to change user etc. from e.g. PROD to DEV. For that I use expdp/impdp, but this tends to be slow with increasing database size. I need ...
1
vote
1answer
378 views

Tracing failed login attempts in Oracle

I have some users who are logging in with a wrong password and their accounts get locked. Now I need to find the source of the failed login attempt. The machine, username etc. Is it possible to find ...
2
votes
2answers
59 views

RMAN DUPLICATE from backup without Target or Catalog: How is the aux instance created?

I am trying to duplicate an Oracle database based on backups to test if they can be used in case of complete system failure. Hence, I want to do this without a connection to the source database. I'm ...
0
votes
0answers
40 views

Using a trigger to check whether a matching record exists

I have a database model set up as in the picture above, modelling a student's enrolment into a unit with an associative entity to facilitate the m:n relationship. I wish to code a trigger that will ...
3
votes
1answer
35 views

Golden Gate realtime replication basic question

I have a task to replicate unidirectional real time data from source database A to target database B. I do not need all the table from A, only few tables and few columns inside those tables. Say 10 ...
0
votes
2answers
130 views

Pentaho Kettle - Unable to connect to virtual Oracle Database

I'm attempting to connect to a virtualized Oracle database but I am receiving the following error: Error connecting to database: (using class oracle.jdbc.driver.OracleDriver) Listener refused the ...
0
votes
3answers
250 views

Replacing the results of a row

I'm working with Microsoft Reporting Services 2008. In our database, we have a small group of confidential students that need to be taken into account for several queries. If they are a confidential ...
1
vote
1answer
337 views

One Materialized View in Two Refresh Groups

I have five materialized views that I want to refresh in two occasions, every Sunday and at the 1st of every month. I created a Refresh Group for the weekly and that works fine. But when I tried to ...
0
votes
1answer
2k views

Export, based on query, into INSERT text file

I need to export some data into a file. The data are selected with a query that will often be made of multiple joins. I want the import operation to be as easy as possible. I was thinking of building ...
0
votes
1answer
250 views

Check Oracle Service is Started from Batch Command

Uses: Oracle9i Standard Ed; I have a schedule which performs a Dump Import and afterwards the System Reboots itself, which is happening without any problem. After the System had rebooted, I have ...
2
votes
3answers
3k views

Oracle 11g installation stuck at installation

I'm trying to install oracle 11g on fedora by following this tutorial but it stuck after I click Next in step 8. The screen does not go away even after several hours. There's no log file in ...
4
votes
3answers
2k views

Can you time how long an Oracle import takes?

I'm on a Windows machine with Oracle Client 11.1.0, and am going to import a database dump. I'm importing from the command line with the "imp" command. Is there an option to time how long the import ...
2
votes
1answer
65 views

Oracle Min - ORA-00937 not a single-group group function

I try to find companies whose fare has minimum fare of destination which more than one companies use that destination. My command; SQL> select tickets.bus_id bus, tickets.fare fare, ...
0
votes
2answers
67 views

How to get past account lock information in oracle database?

Is it possible to query the history of previously locked/unlocked Oracle database user accounts? I've tried dba_user but there is no option to get history.
1
vote
2answers
64 views

How to get the DDL for Oracle object without extra characters

When using Oracle's dbms_metadata.get_ddl for getting DDL I see some extra characters, especially there are whitespace characters at very beginning of DDL script. For example, if I create this sample ...
0
votes
2answers
74 views

Error during Oracle database 12c Release 1 installation

I am trying to install Oracle database 12c on Oracle Linux 7 version. But it is keep on failing with the below error. [INS-30131] Initial setup required for the execution of installer validations ...
1
vote
2answers
59 views

Sanity Test on Oracle Upgrade Database

My oracle sever has been upgraded from Oracle 10g to 12c. DBA has created a box for that now my question is how developers will perform testing on that.. Can anyone provide me the sanity or unit ...
2
votes
2answers
38 views

why I can't set oracle sessions value = 35?

I want to simulate the error "ORA-00018.Maximum number of sessions exceed",so I want to limit sessions = 35 and I am going to open serverl sqlplus to simulate this error,but sessions number didnt ...
5
votes
1answer
87 views

Oracle - physical writes to an index

We have a large UPDATE (affects about 200K records) on a huge table (80M records). Due to a coding mistake, the UPDATE updates the same set of rows (200K) all over again with the exact same value. ...
3
votes
1answer
80 views

Can Oracle TimesTen (or 12c's In-Memory) benefit from GPU?

I have looked into TimesTen and In-Memory recently. They claim they use SIMD to speed up queries. We use HP DL380 G9 Servers for our DB. Since This series are limited to the Intel Core architecture, ...
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2answers
28 views

Can multiple Oracle databases share a single parameter file?

I'm a developer working on an application team that supports a system with one production database and 4 test databases (2 Dev, a SIT and UAT environment). The prod database exists on it's own Unix ...
1
vote
2answers
45 views

How can I stop Oracle Shutdown command?

I used Shutdown normal, instead of Shutdown immediate. Now I want to stop the process, because its taking too long. How can I do it?
3
votes
1answer
37 views

Oracle 12c Rman Duplicate Archive Log Not Verified

I am trying to duplicate a DB from live to dev but it is failing. Can anybody advise what is going wrong? Both databases are running Oracle 12c. All database files seem to be copied over but it fails ...