Category: SQL scripts

when you apply “ALTER TABLESPACE ABC BEGIN BACKUP;”, then status of all dbfs of that tablespace become ACTIVE in v$backup view. It become INACTIVE once you applu “ALTER TABLESPACE ABC END BACKUP;”.

create database PARESH CONTROLFILE REUSE MAXLOGFILES 50 MAXLOGMEMBERS 5 MAXDATAFILES 1000 MAXINSTANCES 1 MAXLOGHISTORY 1357 LOGFILE GROUP 1 ( ‘/db1/oradata/800PARESH/redo01a.log’, ‘/db2/oradata/800PARESH/redo01b.log’ ) SIZE 25M REUSE, GROUP 2 ( ‘/db1/oradata/800PARESH/redo02a.log’, ‘/db2/oradata/800PARESH/redo02b.log’ ) SIZE 25M REUSE, GROUP 3 ( ‘/db1/oradata/800PARESH/redo03a.log’, ‘/db2/oradata/800PARESH/redo03b.log’ ) SIZE 25M REUSE DATAFILE ‘/db3/oradata/800PARESH/system01.dbf’ size 200M reuse;

select * from user_objects where object_name = upper(‘&objnm’);

set pagesize 300 set linesize 130 set head on set echo off accept tab prompt “Enter The Table Name -> ” select b.constraint_name “Cons Name”, b.status, decode(b.constraint_type, ‘P’, ‘PRIMARY’, ‘C’, ‘CHECK’, ‘U’, ‘UNIQUE’, ‘R’, ‘FOREIGN KEY’) “Cons Type”, substr(a.column_name, 1, 20) “Column Name”, decode(b.constraint_type, ‘C’, ‘ MUST NOT BE NULL’ , ‘ Position : ‘)…

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set markup html preformat on Rem Rem Use the display table function from the dbms_xplan package to display the last Rem explain plan. Force serial option for backward compatibility Rem select plan_table_output from table(dbms_xplan.display(‘plan_table’,null,’serial’));

set markup html preformat on Rem Rem Use the display table function from the dbms_xplan package to display the last Rem explain plan. Use default mode which will display only relevant information Rem select * from table(dbms_xplan.display());

create table PLAN_TABLE ( statement_id varchar2(30), plan_id number, timestamp date, remarks varchar2(4000), operation varchar2(30), options varchar2(255), object_node varchar2(128), object_owner varchar2(30), object_name varchar2(30), object_alias varchar2(65), object_instance numeric, object_type varchar2(30), optimizer varchar2(255), search_columns number, id numeric, parent_id numeric, depth numeric, position numeric, cost numeric, cardinality numeric, bytes numeric, other_tag varchar2(255), partition_start varchar2(255), partition_stop varchar2(255), partition_id numeric, other…

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Oracle Internals http://www.ixora.com.au/notes/ http://www.stormloader.com/yonghuang/computer/x$table.html http://www.adp-gmbh.ch/ora/misc/x.html http://www.oracle-training.cc/oracle_tips.htm

**exporting only structure** exp userid=username/password@conn_str file=expdat.dmp tables= table1, table2, table3, table4, table5, table6, table7, table8 rows=n statistics=none **exp command help** exp help=y

Explaination about X$tables http://www.stormloader.com/yonghuang/computer/x$table.html