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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Why is there a difference in CSV Export Results of Oracle SQL Developer and SQL Plus Spool

When I export data from SQL Developer GUI, setting format: csv, left enclosure: ", right enclosure: ", and Encoding: UTF8, I get data exactly the way that I need it for processing in Python. ...
3
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1answer
79 views

How to maintain a global index on a large table undergoing regular partition purges?

Problem I've got giant table haystack weighing in at nearly 3 TB, partitioned by month (date) and subpartitioned by client. I need to create a global index that spans all clients to facilitate ...
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51 views

SQL Loader Pass Dynamic Value

I'm newer to Oracle so I hope what I am trying to explain makes sense. I am required to used SQL Loader to batch load CSV files. There are about 20 organizations uploading around 15 CSV files each. ...
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1answer
37 views

Oracle 10 xe; backing up oradata folder enough to recreate a duplicate later?

Let us say, I backup of the the oradata folder. Is that enough to recreate the exact same database? E.g., I reinstall oracle xe 10 on the same pc, using the same installer, into the same folder, and ...
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0answers
46 views

What is the appropriate GCC version I should use for building my External Procedure?

When working with Oracle External procedures, what is the GCC version I should use to build my procedure? Does Oracle get shipped with a GCC version and libraries that it keeps in one of its own ...
1
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1answer
59 views

Oracle: Recover source code/table structures from “utterly wiped out” development database

Given an Oracle 11.1 database used for development, running in NOARCHIVELOG mode, where all datafiles (including undo) have been wiped out; and only SYSTEM and SYSAUX datafiles and control file remain ...
2
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1answer
90 views

Deferrable Foreign Key Constraints

What are the consequences of making a foreign key constraint DEFERRABLE INITIALLY IMMEDIATE instead of NONDEFERRABLE? This answer on StackOverflow mentions the performance impact that comes with no ...
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1answer
60 views

Arithmetic operations on a table

can anyone give me some advice on the following situation: I have two basic tables: Then a view created by the two: select product.IDPRODUCT, sum(quantity) as totalOut, PRODUCTSTORAGE.DATAINPUT, ...
2
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3answers
72 views

SQL actually executed as planned in ORACLE?

I wonder if SQL is definitely executed as execution plan. I mean.. is the actual SQL execution process always consistent with execution plan, i.e. does the same SQL always give the same plan?
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2answers
90 views

Connect to Oracle using SQLDeveloper using OS Authentication on a remote machine

I reach my database server from my MacBook via SSH. You can login into this database as by using OS authentication. MacBook:~ mangeles$ ssh oracle@10.10.1.64 oracle@10.10.1.64's password: Last ...
2
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1answer
196 views

Oracle 12c upgrade - backwards compatible with 11g?

Are there any application code changes required for SQL or PL/SQL to continue to work in 12c, or is it backwards compatible with 11g? Are there any queries that would work in 11g that break in 12g? ...
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1answer
108 views

How do I find gaps between ranges of numbers?

Consider the following table: T_ID | T_START | T_END -----+---------+------ 1 | 0.25 | 0.5 2 | 0.8 | 1 3 | 0.4 | 0.6 4 | 0.2 | 0.3 5 | 0.7 | 0.8 T_ID is unique. ...
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1answer
35 views

Passing filter params to a sub query

I'd like to create a view from the query below, but the query contains a sub query which I need to apply a filter to (the place is marked with a comment). I'm wondering if it's possible somehow to ...
2
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0answers
54 views

How to get status of “opatch prereq CheckApplicable” via script

I want to check if a patch is Applicable via opatch prereq CheckApplicable -oh <oracle home> -ph <patch home> but the returncode is always 0! It doesn't matter if the text output says ...
1
vote
1answer
58 views

Generate rows based on value in 2 columns. Bug?

I have the following table in Oracle: ID START END _ID01 AB050 AB100 _ID01 AB101 AB150 _ID02 AB0251 AB0300 _ID01 AB00301 AB00302 I want to generate as many rows and every ...
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2answers
567 views

Oracle 12c client installer error

I'm trying to install Oracle client 12.1.0.2.0 (32-bit) on a completely clean copy of windows Server 2012, and I'm hitting a problem. The installer runs fine until it gets to the final part - the net ...
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1answer
27 views

Oracle: How to get a list of CTXSYS.CONTEXT indices?

I can get a list of indices by querying USER_OBJECTS. How can I distinguish which of these indices are of type CXTSYS.CONTEXT?
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1answer
246 views

Oracle Alter table add partition by reference gives “invalid datatype” error but create table with partition works

I have a parent and child tables. Parent table has a partition and a sub partition. Child table needs to have reference partition based on parent partition. Problem: If I create a new child table and ...
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1answer
74 views

Installing Oracle Forms and Reports on a 64bit machine

I'm trying to install Oracle Forms and Reports on a new server 64 bit (Ubuntu Trusty Tahr). (I'm only actually interested in the report server component). I can't find a version that I can install ...
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1answer
59 views

Startup oracle database 12c manually with SQL*Plus command not when OS loads (solved)

I changed oracle instance to manually start from services.msc (service name is "OracleServiceORCL"), Because I want to start it up manually with SQL*Plus commands whenever I want, not with OS load. ...
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2answers
63 views

How to block external connections for an Oracle database?

I have an oracle database (11g-r2) on my (windows) computer for development, and I am trying to forbid any outside connections. Is there a way to do this?
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1answer
44 views

How to set correctly utf8 on oracle?

I check my db,and seems to be UTF8 complaint select * from nls_database_parameters where parameter = 'NLS_CHARACTERSET'; PARAMETER |VALUE NLS_CHARACTERSET |AL32UTF8 But when i do a search ...
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1answer
30 views

A question about oracle upgrade from 12.0.0.1 to 12.0.0.2 using dbua

I found this guide for upgrade. After the upgrade, can I delete safely the old DB product dir /var/oracle/app/oracle/product/12.1.0 ?
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0answers
49 views

Excel and Oracle SQL Connection

I am connecting to an Oracle DB and return data with Excel 2010. I have setup the connection in my workbook and my connection string looks as follows, ...
2
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3answers
76 views

Query to find users with passwords same as their username in Oracle

I'm writing an Oracle audit script where I need to find users in a database who have set their passwords to be the same as their username, e.g. dbaadmin/dbaadmin. The query would need to get the list ...
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1answer
66 views

Oracle database for learning purposes

I would like to know if I can download Oracle Database on my Mac OS X and use it for learning purposes? I know that Oracle Database Express Edition 11g is free, but is it free for OS X?
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1answer
48 views

Oracle Equivalent of the following SQL Server syntax

I'm looking for the Oracle equivalent of the following SQL Server syntax: select Cast(0x41424344 as varchar(max)) In SQL Server, it selects 'ABCD'. 0x41424344 is the hex of 'ABCD'
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1answer
49 views

RMAN restore from tag

oracle 11.2.0.4 on redhat 6 SERV1 is prod server running database MAZ, SERV2 is developemt server with no databases on it. i have noted the dbid and last SCN, and then taken a backup on SERV1 using ...
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0answers
92 views

Out of memory error from Java stored procedure

I have a Java stored procedure inside Oracle 11g database. The procedure uses lots of memory, so I'm setting the max memory size in same session: create or replace function setMaxMemorySize(num ...
3
votes
1answer
107 views

Oracle paging query performance

I'm new to Oracle and I've noticed that pagination queries take the format. select * from ( select /*+ FIRST_ROWS(n) */ a.*, ROWNUM rnum from ( your_query_goes_here with ...
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1answer
86 views

PL/SQL recursive lookup with cursor

I basically have a need for recursing through data in my Oracle table so I can find related rows and send them out. It is a single table, a single ANSI SQL query seems not possible due to turin ...
0
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1answer
23 views

is it possible to extract 'LifeCycle Status' using emcli ( Oracle Enterprise Manager )

It's easy to set the LifeCycle status ( and other properties ) with emcli, emcli set_target_property_value -property_records="sometestdatabase:rac_database:LifeCycle Status:Test" but getting the ...
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0answers
55 views

Oracle 12c database cannot log in as a local user

I met a problem from Oracle 12C Database, when I try to login to the user account with commandconn test/test, I got prompt of "invalid username/password, logon denied". when I use conn ...
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0answers
17 views

oracle bulk loader processing columns with newline characters

I'm trying to load a file with description columns which may contain newline characters. The file is Unix format utf16, tab separated and description columns are enclosed in ". The problem is bulk ...
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0answers
49 views

Is there a way to check which views have data? Oracle 11g

I'm undergoing a cleanup process for a data mart design. However, I want to get rid of any views (in the design) which result in having 1 or less rows of data. Instead of manually going through ...
0
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0answers
43 views

TAF vs SCAN in Oracle 11gR2

We are planning to use Oracle 11gR2 RAC. I am wondering if TAF is required to setup even when using SCAN in Oracle 11gR2 RAC. Please let me know if there are any advantages of using TAF along with ...
0
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1answer
62 views

ORA-01461 in a msaccess linked table

In an Oracle 11 database I have a table that all fields are varchar2. This table is linked in an access database, and when I try to do an insert from a data aggregate query, it throws the error ‘can ...
3
votes
3answers
86 views

Why does the CBO eliminate `distinct` and not `group by` in this query?

The CBO chooses to eliminate the distinct in the 'slow' query - presumably it can tell that the operation isn't needed because of the outer group by. My questions are: 1) Why does it choose to do so ...
0
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2answers
136 views

OLE DB Driver sql 2008r2 to Oracle failing

I have a SQL Server R2 Installation running on Windows Server 2008 R2. I have installed Oracle Instant Client, registered the OraOLEDB.Oracle driver(orasql12.dll), and set the PATH in environment ...
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2answers
214 views

Oracle database not open and ORA-00600 error

Whenever I try to open Oracle, I get following error : ORA-01109: database not open So as suggested by various blog and forum, I tried the following series of commands c:> sqlplus /nolog ...
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1answer
132 views

Oracle RAC, unable to connect to node vip [closed]

I have a new oracle RAC installation running 11.2.0.4 on redhat 6. I can connect to sqlplus from a client using the node name but it is timing out when i use the node vip eg. first one works, second ...
0
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1answer
22 views

Unable to configure oracle 11g net server

I installed Oracle 11g on my Windows Server 2008 workstation. After I try to configure oracle net server with port number 1521. But ONS error say to me as "Use another port number. This port is ...
1
vote
1answer
92 views

Compact Spool file from Sqlplus

I have scripts that I run in Oracle SQL Developer and then export the result to my pc as a csv. I now started using sqlplus with a .bat to run my scripts and spool the result to my pc. But I noticed ...
0
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0answers
132 views

php oracle 11g client side character encoding

My oracle 11g database has utf8 character encoding. And data like ä ö ü etc. Oracle is not on the same host as my php application. The database host can be a Windows 7 machine (in Windows-1252) and a ...
6
votes
2answers
88 views

Will the Oracle optimizer still plan a join if I'm not reading any columns in the joined table?

Suppose I have the following view: CREATE VIEW dummy AS SELECT a.some_column, b.other_column FROM a LEFT JOIN b USING (key_column); When I do a SELECT some_column FROM dummy, is there a way to ...
0
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1answer
56 views

Critical tablespace usage UNDOTBS (98%)

This tablespace is in my case 8GB. I'm on oracle 10g and got critical warning: Tablespace usage critical: UNDOTBS (96%) I also executed this command: select sum (bytes/1048576) MB FROM DBA_SEGMENTS ...
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1answer
27 views

Right way to get references to an object in Oracle?

I want to find all the objects referencing my object. I came up with this query, Is this the best way to get all references to an object? (I know this doesn't include constraints, I handle that ...
3
votes
1answer
72 views

What is the difference between public_dependency and dba_dependencies?

I know that PUBLIC_DEPENDENCY has only the objects and references Ids, and the DBA_DEPENDENCIES does not have the Ids, but the Type, Owner, Name, etc of them. But beyond that, what is the difference ...
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2answers
188 views

ORA-00600 argument description

I am experiencing several ORA-00600 error events, presumably during exceptionally high I/O. Does anyone know where I can lookup the meaning of the following arguments for ktspfmdb:objdchk_kcbnew_3? ...
0
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1answer
160 views

Oracle 11gR2 RAC unable to connect to SCAN address [closed]

I'm having a problem with my RAC environment. I am using RedHat 6, Oracle 11.2.0.4 SE. Have a 2 node RAC setup using ASM. When connecting using SQL Developer, i can connect to my service ...