Select * from user_indexes where status ='Invalid'you can specify index_name in the same query to look for a particular INDEX.
deepsk singh
Jul 16th, 2007
If you want to know which one?is invalid/valid; you find out from the data dictonary table user_objects and execute query select * from user_objectswhere object_type = 'INDEX'and status ='INVALID' ---and status ='VALID'
RAISE statement is used to raise exception explicitly with in the EXECUTABLE sectionwhere: Exception is previously declared in declaration section as 'exception'.
Hello,SQL * LOADER is a utility tool which comes inbulit with any versions of Oracle. it is used to load data (.txt,.xls, tables, Doc ...) any flat files of this type can be loaded into Oracle d...
SQL*Loader is a tool used to load flat files quickly into Oracle Tables. Using this, a single flat file can be loaded into multiple tables during the same load.
Some objects are stored in the database and can be created and manipulated with SQL but are not contained in a schema. Its called non schema object. Non schema objects are given below:- Contexts D...
-?? A cluster is a set of 2 or more machines (nodes) that share or coordinate resources to perform the same task. ??????? - A RAC database is 2 or more instances running on a set of clustered...
In the above code '-2' specifies that the only two digits before the decinmal points needs rounding up.and '+2' would mean two digits after the decimal point.
as in u'r comment second prameter is negative,so it will count 2 digit from decimal point to left side .i.e 23 this 23 is less than 50 so it will round it zero.if u take above 50 it will round it to 1...
Crystal Report is third party tool to develop different types of reports, just to connect database which are oracle , ms sql 2000 and ms access etc where as Oracle report is specially used for oracle data base
It seems that, if the main query selects from a great number of rows, than Oracle will have a better execution plan if you use EXISTS. If the main query selects from a small number of rows, while...
Tablespace : A tablespace is a logical structure on a Oracle database consisting of one or more datafiles. The objects are stored in a tablespace.Clusters: When two or more tables have a requirements ...
Ramco
Oct 9th, 2006
Table space is the logical data units of a database. every database is divided into Database -> tablespace -> segments - > externsin short (tablespace is a logical group of data files in a da...
Index are reference to data in tables's columns on what they are based. Index work exactly in way? like we have book's index describing its chapters and what page # chapter can be found.They only con...
When you execute query oracle checks for various things syntax, access and then generate optimize plan and in this stage parsing happens. when the query plan is already there in sga you get hit and that is soft parsing..else hard1. Soft parsing2. Hard parsing
If you are a DBA, login on the host using sqlplus to the database using sys as sysdba privilege.$ export ORACLE_HOME=<ORACLE_HOME>$ export ORACLE_SID=<ORACLE_SID>$ sqlplus "/ as ...
daniels
Dec 18th, 2006
You could also do the following.dbms_utility.compile_schema(schema IN VARCHAR2,compile_all BOOLEAN DEFAULT TRUE,reuse_settings BOOLEAN DEFAULT FALSE);exec dbms_utility.compile_schema('SCOTT');
Hi,Lookup tables are like master tables which are static & will be referred by other Base tables for reference.Lookup tables are basically used for referring a predefined data which are stored in these tables.*** Innila ***
Red
Mar 11th, 2007
A look up table is a table whose values are seldom or never updated. They are basically used for references. A good example of a look-up table is a 'country's' table.
The large pool is created to avoid contention in the shared pool in the case of shared server environment..The UGA process takes place in the shared pool in the case of shared server environment..so to avoid contentions all the user processes are shifted to the large pool..
New Features in 9i are 1.Multiple table inserts using a single statement2. Multilevel collections. ie. a nested table can be used in a nested table3. Case Expression - it's a extended form of decode4....
New Features in 9i are1. Multiple table inserts using a single statement2. Multilevel collections. ie. a nested table can be used in a nested table3. Case Expression - it's a extended form of decode4....
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