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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Migrate from mysql to oracle

I'm trying to migrate a db from mysql to oracle, I'm trying to follow the videos from the official page of oracle: Here! But I have a doubt, when I'm trying to do the step of "translate" I don't have ...
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1answer
27 views

What is the distinction between ALL_PROCEDURES and DBA_PROCEDURES, and other schema tables?

I recently failed to find a known procedure when searching ALL_PROCEDURES, and on a whim tried DBA_PROCEDURES: lo, there it is. The doc pages (ALL_; DBA_) both say "...lists all functions and ...
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1answer
80 views

Login / Password for Oracle Enterprise Manager in VM template?

I want to setup Oracle Enterprise Manager to access our development Oracle databases. I downloaded the following VM template from https://edelivery.oracle.com/EPD/Search/handle_go Oracle VM ...
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33 views

Low performance oci_execute

I work with a PHP application that connects to an Oracle database. Sometimes, the PHP executes a large query from a large database the page loads for ages (more than 200s). But I've seen something ...
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2answers
77 views

How to dump data from Oracle to MySql

In my migration project, i need to dump the data from oracle to mysql. So is there any utility or way i can do this operation? The data dump file in the form of .dmp.
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1answer
42 views

Oracle RMAN Incremental update or merge questions

1- Does Oracle RMAN support Incremental Update/Merge option for device type SBT ? Or its only supported for Disk ? 2 - During an update/merge operation during the incremental backup, does RMAN write ...
2
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1answer
92 views

Is there a way to pass to execute immediate only once a variable but use it several times?

I have a Cursor that gets its data from a script along these lines: OPEN myCursor FOR SELECT value1 AS Value1, myPackage.function1 (value1, :myId) AS Result1, myPackage.function2 (value1, :myId) ...
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1answer
56 views

Tablespace of an index organized table

I want to find the tablespace of an index organized table with primary key. With dba_segments I can only find the tablespace for the primary key. But how can I find the tablespace for the table?
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1answer
1k views

IO Error: The Network Adapter could not establish the connection - with Oracle 11gR2. Connecting with SQL developer

I have installed Oracle 11g ON a RedHat6 linux instance, by following all the steps mentioned in "http://technologylair.net/2013/08/oracle-11g-installation-linux/#comment-50" I am trying to connect to ...
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17 views

Debugging long Oracle queries and identifying offending data for 'Expression type does not match a required type' error

I have a long running query with a large number of complex XQueries. This queries used to work but more recently it is giving me Expression type does not match a required type error. I suspect ...
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1answer
105 views

How to reference a table from another schema inside a package?

I am using TOAD to create a package in a Schema that I have am owner. My package uses tables of another schema. The package has a procedure that uses a cursor. When I create the package I get ...
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1answer
34 views

Bypassing Password Verify Function

I am considering making a recommendation to enforce a password verify function that will not allow users to change their own passwords. My understanding of the PASSWORD_VERIFY_FUNCTION in Oracle is ...
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2answers
47 views

Oracle patching

Hi everyone I'm a student and I need a help with Oracle patch's. My DB 10.2.0.5.0 I don't understand how to check which of CPU and PSU patch's were installed. When I try to use sql select * from ...
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1answer
33 views

What is the disadvantage of maintaining both row and column table storage?

I just watched Oracle's In Memory database release. I can understand that removing a lot OLAP indexes accelerated the database a bit. But does that really mean maintaining 2 table storages doesn't ...
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0answers
33 views

increased tablespace but dba_tablespace_usage_metrics order shows same

Although I appear to have solved the problem of the tablespace being full I am perplexed that after altering the the datafile size that the tablespace size has remained the same. What is it that I ...
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1answer
44 views

General question on dbms_stats

General question on dbms_stats and auto sample size? what is the impact of having IOTs with overflows and you switch to auto_sample_size and enable approximate NDV . How does it impact?
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1answer
40 views

Possible Inconsistency Among System Tables

Is there a reason that there would be a significant difference in the number of records in the DBA_USERS table and the USER$ table?
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1answer
73 views

Can I run DDL in pretend mode in Oracle

I have a script to drop several objects in the database (including queues) -- when it partially fails I need to recreate the objects that have already been dropped to continue testing the script. For ...
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2answers
275 views

What is the difference between Schema and Database in Oracle?

In oracle, Datafile are system files where actual data is stored.The collection to datafile make Tablespace and atlast database is collection of tablespaces Correct me if I am wrong on the concepts ...
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0answers
39 views

Testing equivalence in strings with different character sets

I have to synchronize a number of tables with string columns between two databases: the source Oracle 10.2.0.3 NLS_CHARACTERSET WE8MSWIN1252, NLS_LENGTH_SEMANTICS BYTE the destination Oracle ...
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0answers
30 views

Running DBMS_AUDIT_MGMT package under other user than SYS

I want to run DBMS_AUDIT_MGMT package under user CENTRUMADMIN. But error occurs even when I try to run this part of code: BEGIN DBMS_AUDIT_MGMT.init_cleanup( audit_trail_type => ...
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2answers
82 views

Table design for multi-type data

The information model I am modelling from includes an "any type". For example a customer can have zero or more 'entries' each of which can have a number of values. Each value could be a either date, ...
2
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1answer
113 views

Oracle TimesTen vs Oracle database in-memory

Oracle has recently announced its latest Oracle database in-memory feature in 12c. Oracle already had an in-memory database TimesTen and now I was wondering as to what the the differences between ...
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2answers
47 views

use of synonyms in oracle

I want to know the usage of Synonyms in oracle.I have searched in internet there i have learned like synonyms will be created in one schema and we can use that in another schema. But still am not ...
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0answers
45 views

How to ensure on Oracle RAC One Node that the OWB control service is started on the active node after a planned relocate or unexpected fail-over? [closed]

I followed the document 'How To Install a Warehouse Builder 11g Repository on a RAC' (Doc ID 1571166.1) to set up the OWB repository (11.2.0.4) on my Oracle RAC One Node system. Because it's a RAC One ...
2
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1answer
70 views

Oracle database startup fails several times. Giving ksvcreate

Last night my production server database (ORACLE 10.2.04) was showing me number of connection exceeded as some times it show me. Then as usual I shut down abort my database then at the time database ...
2
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2answers
208 views

Design of an application log database

We are generating logs like following example(this is a table no actual pipes): 2014-06-10 09:00:03.457 | Channel1 | Operation3 | Function15 | 15ms 2014-06-10 09:00:08.245 | Channel2 | Operation5 | ...
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0answers
40 views

What are the key points while using Oracle12c as application database

We want to use Oracle12c database as the default data store for our application. We would not be using the plugable database features ; only single instance standalone database. The database would be ...
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2answers
53 views

How to get next value of Sequence dynamically in Oracle

I used to a SQL guy and trying my hands on Oracle front. I am getting dynamic values of sequence in a variable. I like to fetch next value for that sequence object in some output variable. How to ...
2
votes
1answer
95 views

Does Oracle run queries to completion after SQLdeveloper disconnects?

The query is a CREATE TABLE t as SELECT .....; statement. Can I reliably count on Oracle to complete this after I disconnect? After I re-connect, how can I check on the status of this query?
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1answer
57 views

How to perform same DML statements on two different servers (Oracle and SQL-Server) simultaneously

I have two servers, Oracle and SQL-Server. I have same database on both the servers. I want to perform DML (insert,update,delete). How can I perform same DML statements on both the servers ...
3
votes
1answer
55 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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56 views

I use sqlDBx to connect oralce 12c, cannot connect

My computer is 64 bit.The sqlDbx that I am in the official website to download. I am a Chinese, hope ace to help me,thanks a lot !
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1answer
32 views

Is there a way to use Oracle XE as an easy-rollback “proxy” to regular Oracle [closed]

For development, we're currently connecting to shared dev databases that are way too big for XE (some are 100s of GB). Is there a way to set it up so that we can have a local XE on each developer's ...
2
votes
2answers
136 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: ...
1
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1answer
59 views

Insert with different key values to avoid contraint violation

I have a set of Inserts traced of a database and I want to issue them into another similar one. The problem is that I'm getting contraint violation errors due the similar database already has the keys ...
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1answer
31 views

how do i configure Oracle Net Listener on a server with two network connections

I have a server that i have virtualized and as such it has two network connections, one to simulate a network between several virtual machines and the other to connect to the host physical network. ...
2
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0answers
85 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 ...
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1answer
49 views

Redo log size results into performance degrade

We are continuously doing heavy insert and update query, but after 10 hours data base is returning answer late in minutes normally it takes around 1 ms. I observed that "free buffer wait" and "redo ...
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0answers
55 views

Archive Logs not applied on Primary Database

I have a oracle database and some archive logs in the primary database have not been applied. When I run SELECT THREAD#, SEQUENCE#, APPLIED FROM V$ARCHIVED_LOG order by SEQUENCE# I get the following ...
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0answers
49 views

INDEX SKIP SCAN performance on Index where first columns only contain 1 value

We're running an Oracle 11.2.0.3 database and have a table with above 10 columns in it. There is a non-unique index over all these columns. For simplicity in this example, lets assume the columns are ...
0
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0answers
20 views

10.2.0.5 RAC instance running on Linux-64 recieved KEWRRFC: Remote Flush slave Failed, return code: 2

Last Friday one of two instances in our 10.2.0.5 RAC cluster was non-responsive after logging the following messages. We ended up rebooting the node and it came up successfully. While I will likely ...
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0answers
24 views

Oracle sql developer: generating “CREATE” query list from an existing database [duplicate]

Is it possible with Oracle SQL Developer? If not, any other tool were also okay.
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1answer
26 views

Oracle structural synchronization [duplicate]

I'm having two oracle databases. A is used for production, B is some kind of staging instance where people are preparing content that is brought to the production system over night. It is a fully ...
0
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1answer
61 views

Oracle DB - Is it possible to distribute data of a table onto multiple servers?

BigTable[1]-like systems (HBase[2] for instance) allows a table to be distributed transparently accross multiple servers. This works as follows: Each server perform the read/writes operations on ...
1
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1answer
71 views

How do I differentiate between user-defined public synonyms and built-in public synonyms?

I am trying to query the Oracle ALL_SYNONYMS view, but filtering by OWNER=PUBLIC returns both synonyms I have created and Oracle created ones. Is there a way to distinguish between the two?
3
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1answer
73 views

Installation of Oracle Instant Client on an Ubuntu 64 machine

I would like to install Oracle Instant Client on a Ubuntu 64 bit machine. Following this link, I have installed the rpm packages basic, development and sqlplus using alien. Then: sqlplus ...
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1answer
36 views

Efficient matching rows across two tables with huge data set

I have two tables with about 300+ columns and 20k+ rows each. Each row is characterized by a primary key which both tables have.I have to find the identical rows, rows with changes,and rows without a ...
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1answer
144 views

How to know which process is causing high memory usage on DB?

I've got one Onesight alert mail stating below: Short Description: Onesight Alert: ZEUS DB Monitor (zeus04) Description: Solaris 5.8: vmstat memory(free) - Free Memory for zeus04 2065112 8:06:02 ...
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0answers
60 views

How to fix type conversion error in Data Flow task?

I have an SSIS job with a data flow task having an OLEDB source and OLEDB destination. I am moving almost 40,000 rows from one DB to another DB. In my SQL query**(Source**) , i have 10 columns all ...