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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SQL Server to Oracle export using Microsoft OLEDB Provider for Oracle

I am trying to Export Data from SQL Server to Oracle using the "Microsoft OLEDB Provider for Oracle". I am using "Export Data..." option from Task menu. I get to connect to the source database (SQL ...
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1answer
543 views

Oracle: Table or View does not exist in Tree

I have set up a Oracle 12c database for students. The goal is that each student has access only to his own scheme where he/she can create tables, views, indexes, etc. I set up the accounts using ...
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0answers
26 views

Toad Error using Proxy Connection

I created a login for a user two days ago to an oracle database and altered another user so this new user could do a proxy connection as that user. Everything worked fine that day and the user was ...
3
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1answer
3k views

Why ORA-00932: Inconsistent Types error?

Sorry for the meaningless title, but I couldn't think up a better one. I'm using Oracle 11g r2. The following query raise ORA-00932 error: SELECT BBB.FIELD1 FROM TABLE0 AAA JOIN (SELECT * FROM ...
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2answers
36 views

how to prevent any update to my database before a exp operation?

I want to migrate my database from AIX to Red Hat vai exp/imp. how to prevent clients make any update to my database during the migration progress ?
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1answer
28 views

oracle database - sql for counting the columns with the same id with the one in current row

I have an oracle database and a few tables and with this query: select rap.DENUMIRE,a3.ID,op.FK_ID, (SELECT COUNT(*) FROM ANEXA3_TABEL1_ROWS) AS count from ANEXA3_TABEL1_ROWS a3 inner join ...
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1answer
121 views

Results of SAMPLE clause using a DBlink between 2 Oracle databases not randomised

I'm using the SAMPLE clause to retrieve random rows from a table. It works fine except when the table is from another database. I'm using a database link between 2 Oracle 11g databases (11.2). This ...
2
votes
2answers
863 views

Unable to start Oracle Database Server : Get an error as I try to start it

I just installed Oracle Database Express Edition 11g Release 2 for windows.It created a short cut icon on the desktop : but as I click this icon I see this dialog box : What is it ? How do I ...
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0answers
35 views

Oracle query optimization time

Is there any way to get how long it takes the optimizer to optimize a query in Oracle?
6
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3answers
20k 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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0answers
10 views

Configuring management interface on Oracle RAC Listener

i have a SCAN configuration ready & working, but require along with it that each node be separately reachable on a management interface for administrative connections. Listener would have to be ...
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1answer
8 views

is it possible to rollback only a partition/subpartition?

Is it possible to create a savepoint and to rollback only a partition of a table? Lets assume I created a monthly partition and subpartitions with a group_id for table x. Now i run some stored ...
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0answers
16 views

RMAN multilple channels

When to use multiple channels in RMAN? Is it effective only when backup is performed to multiple physical disks or tapes? I've found only that every channel is different session opened by RMAN in ...
6
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4answers
1k views

How to document Oracle database?

I'm new to Oracle databases. I have used to SQL Server and the description fields (MS_Description) for tables and columns for documentation purposes. Is there an equivalent for Oracle? What is the ...
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0answers
22 views

hierarchical query

I have a Oracle table that has child and parent rows similar to the example below P_JID has the parent's JID, it can go as far as 4 levels JID P_JID NAME STATUS ...
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1answer
59 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 ...
0
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1answer
413 views

Modify text file with Oracle PL/SQL

I'm trying to open and replace a string in a text file with the following procedure: BEGIN v_file_name := 'text_file.txt'; v_filehandle := utl_file.fopen(v_file_dir, v_file_name, 'W'); v_id_nextval ...
1
vote
1answer
36 views

Is there any way to trace the optimizer's work in Oracle?

Just like the MEMO structure in SQL Server which is kind of a "paper trail" of steps the optimizer takes in optimizing the query, is there anything in Oracle through which I can see what are the ...
2
votes
2answers
421 views

SQL query for next occurrence of specific date

I am working on a function for our database that contains contract data. Each contract expires on a certain date, and then each contract has an expiration type that determines what happens after that ...
6
votes
2answers
82 views

What is an Oracle ASSEMBLY?

What is an Oracle ASSEMBLY, in the context of Oracle SQL? It's listed in GV$SQLCOMMAND. Although GV$SQLCOMMAND is not a perfect guide to "real" SQL statements - for example it has UPSERT instead of ...
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1answer
33 views

Oracle copy DB from one windows server to another

I am not an Oracle DBA but looking for the best approach to copy/clone an Oracle database from one windows server to another, here is my configuration and my requirements: Configuration Server 1 ...
1
vote
1answer
148 views

How to retire a physical standby in Oracle 11.2

I have a production Oracle 11gR2 RAC database with a single node physical standby. Now it has become the time to retire the old standby and pass that role to a RAC on fresher hardware. We don't use ...
0
votes
1answer
33 views

Oracle can't drop index with . in name?

I am trying to drop an index that has a dot(.) in its name and can't seem to do it (I'm logged in as the SYSTEM user, which owns the index). Any ideas? SQL> select index_name,owner,status from ...
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1answer
33 views

migration of oracle xe 10 to xe 11 fails with wrong paths used in the import

I'm following the documentation to upgrade an OracleXE 10.2 database to OracleXE 11.2. The export succeeded without any problem, the import (on another machine with XE 11) fails though. The log file ...
0
votes
1answer
71 views

Sql*Plus ERROR: ORA-12154: TNS:could not resolve the connect identifier specified

I installed Sql*PLUS on a cloud Oracle Linux Environment in order to access an remote database. I used the installation instructions provided as an answer here: ...
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votes
1answer
99 views

How to restore 11gR2 fullbackup to 12c database in rman

I need to transfer my database from Oracle 11gR2 to 12c database. It will be in same computer. I took full backup of Oracle 11gR2 database. Then I remove Oracle 11gR2. I installed Oracle 12c and I ...
2
votes
1answer
217 views

Failed to drop column - value too large

I'm trying to remove column from DB and got a strange error: Error starting at line 147 in command: alter table config drop column dte Error report: SQL Error: ORA-12899: value ...
1
vote
1answer
209 views

Mistake during Oracle 11g PITR

I tried using set time until.. and mis-typed the date. Can anyone help me understand how to get my backups into a manageable state? After the accidental recover, most of my backupset disappeared. I ...
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votes
0answers
29 views

Sql*PLUS: Output each field as a new line

Right now the configuration I have is the following: set pagesize 0; SET NULL *NULL*; SPOOL output/output.txt I am outputing the results to a text file in order to run a function on the file to ...
1
vote
0answers
59 views

How to identify concurrency issues in Oracle 11g?

For a short period in time we had a concurrency issue that lead to subsequent faults in our application (Java, Spring, Hibernate). Since we are using dictionary managed tablespaces, I first thought ...
0
votes
0answers
34 views

Monitoring active query step using only pure sql

I would like to monitor actively running query on Oracle. What I mean is to gather info about: Actually running step. (What is currently db engine doing in this query) Actual query plan used in ...
0
votes
1answer
32 views

Select max value from many to many tables

i have next tables in may data base: I want to select the book that has the max number of pages for each author. I did this : select auteur.nomauteur, auteur.prenomauteur ,livre.Title, ...
0
votes
1answer
23 views

What is the query to get the process limit on Oracle 11g?

I'm getting the error: Maximum Number Of Process Exceeded I want to see (using a query) what the setting is in my database for the process limit. My question is: What is the query to get the ...
2
votes
0answers
25 views

what is causing the reads in this configuration?

i have a setup here where we use a Solaris 10 x86, zpool for oracle12c-redo-log using mirrored disks and mirrored ZIL. logbias="latency", recordsize=128: pool: xxxxxx01_redo00 state: ONLINE scan: ...
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votes
1answer
30 views

Replace nested “select with count” with outer join? is this possible?

SELECT c.classid , c.classname , (select count(s.id) from students s where s.classid = c.classid and status = 'failed') as noOfFailed, (select count(s.id) from students s where ...
1
vote
0answers
21 views

SQL - Optimize table population with dynamic queries

I need to optimize the following pl/sql procedure. So, fundamentally my question is: There is a way you can do a bulk insert in a pl/sql that could be more efficient than loop through an associative ...
3
votes
0answers
44 views

Can an active session in oracle be dead?

I have a time consuming query which populates a materialized view. It has been running for 18 hours - which was not expected. SELECT STATUS FROM V$SESSION WHERE SID=194; The above query shows the ...
0
votes
2answers
44 views

Failed to connect to oracle SQL Plus [closed]

I tryed to connect to SQL Plus as the admin "System", I'm sure that the password I wrote was correct but the connection failed. I also tried to connect with Scott/tiger but it failed as well. What can ...
8
votes
1answer
7k views

Duplicate an Oracle database user

We'll be having external auditors coming over to perform a review on our Oracle database. They will be running a tool to perform the review and for that, they require a user ID that can connect to the ...
0
votes
1answer
56 views

What is the best query to get the latest row version based on time?

I'm wondering what can be the most efficient query to get the latest rows from the following table. CREATE TABLE AGE_DATA ( INSERTED_DAY TIMESTAMP(6), HOSTNAME VARCHAR2(255 CHAR), CONCEPT ...
0
votes
1answer
26 views

Oracle grant select on a table

I want to grant select permission on a specific table to a remote ip address I had done it before in Mysql with this: grant all privileges on mydb.* to myuser@localhost identified by 'mypasswd'; ...
0
votes
3answers
38 views

Oracle RMAN Back-up files in red hat can be read in windows?

We have performed a cold back-up of a database using Oracle RMAN. The back-up ran on a Red Hat Server and then the files were copied to a mounted external hard-drive. Can this back-up files then be ...
0
votes
0answers
16 views

Difference between @multitenant(SINGLE_TABLE) and @multitenant(VPD) in EclipseLink

Despite the fact I searched a lot in the internet and read many articles, I still be unable to get the difference between the Single_Table strategy and the VPD strategy of EclipseLink. At first I ...
2
votes
1answer
47 views

How do I retrieve the loop record in the connect by clause?

I have a employee-->Manager hierarchy and using the following query: SELECT EMP_ID, FIRST_NAME CONNECT_BY_ISCYCLE "CYCLE" FROM MYTABLE CONNECT by NOCYCLE PRIOR MANAGER_EMP_ID = EMP_ID START WITH ...
2
votes
1answer
64 views

With Clause vs View of the same name

In my database, there is a view named VAL_DATES_V which is used in many other views in the same schema. For example, the SQL code in the view SECTOR_V uses VAL_DATES_V. CREATE OR REPLACE VIEW ...
0
votes
1answer
29 views

Using oracle hints

I am trying the following query to list the first 10 rows from fisgen table: SELECT /*+FIRST_ROWS(10)*/ salute, gender, fid FROM fisgen; The hint is not executed. All the rows from the table are ...
0
votes
1answer
28 views

Oracle Text: query scoring with CTXCAT index?

If a text column is indexed with a CTXSYS.CONTEXT index it can return a score showing how well the text matches the query. create index ix on t(text) indextype is ctxsys.context parameters (''); ...
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votes
2answers
23 views

Single select from template record oracle

Due to lack of terminology in my head, let's say I've got 1 record from users table with these attributes : Name | Surname | Height | Weight Person X 6,2 190 How do I find other ...
0
votes
1answer
43 views

Displaying output in SQLPlus [closed]

I will open my SQLPlus with CMD in windows. When I write a query it shows 157998 rows as result. I want see the all result in sqlpus window, but it is not showing all the result.
-2
votes
1answer
31 views

How to record sqlplus session activity like “/var/messages” in Unix..? [closed]

something like $ sqlplus '/as sysdba' @spool log1.txt SQL> --Is there anything like the above..?