Server Administration :: How To Find Unused Columns
Nov 9, 2011is there a way to find out which unused columns in oracle?
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Server Administration :: Unused Columns
Jul 13, 2013If you mark a column unused, is there any way to project it? I know the docs say you can't, but as the data is still there I would have thought it should be possible. I can see the column in dba_tab_cols, but the obvious ways of making it usable don't work:
orcl> select column_name,hidden_column from user_tab_cols where table_name='DEPT';
COLUMN_NAME HID
------------------------------ ---
LOC NO
DNAME NO
DEPTNO NO
orcl> alter table dept set unused column loc;
Table altered.
orcl> select column_name,hidden_column from user_tab_cols where table_name='DEPT';
COLUMN_NAME HID
------------------------------ ---
SYS_C00003_13071316:19:02$ YES
DNAME NO
DEPTNO NO
orcl> select "SYS_C00003_13071316:19:02$" from dept;
select "SYS_C00003_13071316:19:02$" from dept
*
ERROR at line 1:
ORA-00904: "SYS_C00003_13071316:19:02$": invalid identifier
orcl> alter table dept rename column "SYS_C00003_13071316:19:02$"
2 to loc;
alter table dept rename column "SYS_C00003_13071316:19:02$"
*
ERROR at line 1:ORA-00904: "SYS_C00003_13071316:19:02$": invalid identifier
orcl> alter table dept modify "SYS_C00003_13071316:19:02$"
2 visible;
alter table dept modify "SYS_C00003_13071316:19:02$"
*
ERROR at line 1: ORA-00904: "SYS_C00003_13071316:19:02$": invalid identifier
Server Administration :: How To Find Non-indexed Queries And Columns That Require Indexes
Sep 1, 2011How to find non-indexed queries and columns that require indexes?
View 3 Replies View RelatedSQL & PL/SQL :: Dropping Unused Columns In A Partition?
Jan 21, 2003I have been trying to drop an unused column in a partitioned table, and the number of records stored in this unused column was very high. I kept on running into errors as follows:
ORA-01562: failed to extend rollback segment number 10
ORA-01650: unable to extend rollback segment R09 by 256 in tablespace RBS
I tried to "SET TRANSACTION USE ROLLBACK SEGMENT <name>" with a larger rollback segment, but it still did not work. Can I drop the "unused column" from each partition instead?
How to apply that? Or, what are my options besides increasing the size of the rollback segment?
Server Administration :: Unable To Find Server Process In Oracle Database For Specific Application / Client
Feb 13, 2013I am trying to find the unix process for one of my application in the database but I am unable to view the same. To simulate, I did the following.
1. My database runs on different server.
2. I invoked "sqlplus" from another unix box to login to the database.
3. I found that the process id (ps -ef |grep sqlplus).
4. When I execute the below mentioned query it does not display the process id that I am looking for. But the osuser, username, program and machine details are correct. How can I know the process details from the database?
SELECT SYS.GV_$SESSION.OSUSER, SYS.GV_$SESSION.USERNAME, SYS.GV_$PROCESS.SPID,
SYS.GV_$SESSION.MACHINE, SYS.GV_$SESSION.PROGRAM,
SYS.GV_$PROCESS.PROGRAM ,SYS.GV_$SESSION.SQL_ID
FROM
SYS.GV_$PROCESS, SYS.GV_$SESSION
WHERE
SYS.GV_$PROCESS.ADDR=SYS.GV_$SESSION.PADDR and SYS.GV_$SESSION.USERNAME='TEST'
and SYS.GV_$SESSION.MACHINE like '%hostname%'
Server Administration :: Find Or Set New Oracle Instance Name On Backup Server
Sep 22, 2010We performed image copy of production Oracle server (OS and instances) to a backup server. After a few weeks, we try to restore a latest Oracle database backup from production server to backup server. As we know, Oracle instance must be unique on the network.
Even we log on to backup server and bring up the instance, I think that still point to production instance since all init file, TNSNAMES.ora and listener file are still same. If we restore the database, we will end up bring down the production instance and restore on top of productions. How to change instance name on backup server including TNSNAMES, sqlnet, listener files in order for us to restore Oracle database from production to backup server?
Server Administration :: How To Find Updated Table
Mar 9, 2012how to find a table is updated and when the table is updated.
View 1 Replies View RelatedServer Administration :: Find Whether Database Link Is Being Used?
Jul 26, 2011I am having database A and database B and I am inserting into database b by selecting some records from database a using db link.Is there any way to find whether database link is being used?
View 6 Replies View RelatedServer Administration :: How To Find When The Datafile Was Resized
Jan 17, 2012We need to find when any datafile was resized ( if at all)in a tablespace. Actually, by noting the created date from v$datafile , we used to know the data growth in a tablespace. Now as the number of datafiles have increased, we want to resize them. This diagnostinc have to be done without changing/adding anything in DB.
View 12 Replies View RelatedServer Administration :: Where To Find Alert Log Errors
May 10, 2010where i can find an alert log errors so whenever they occur in my RAC so i can comprehend them very well. I am trying to know that what can be the errors when u have RAC with ASM and SAN .
View 3 Replies View RelatedServer Administration :: Cannot Find SQL Plan For Insert Statement
Dec 27, 2011I can not find the sql plan for insert statement,why?
Select sql_text From v$sql a
Where a.SQL_ID = '0yungrk19a277';
-------------------------------
INSERT INTO OS_USERBILL_ACTV_READ_MON_DT
(MONTHNO, MAILCODE, OPERTYPE, PROVCODE, AREACODE, DAY_TOTALCOUNT, TOTALCOUNT,
CREATETIME, MODIFYTIME, SENDER_TYPE, SENDER_DOMAIN)
VALUES
(:B9 , :B1 , :B2 , :B3 , :B4 , :B5 , :B6 , SYSDATE, SYSDATE, :B7 , :B8 )
[code]....
Server Administration :: Find Last Run Duration Of Job Which Was Scheduled Using DBMS_JOB
Jun 20, 2010Is there any way to find the last run duration of a job which was scheduled using DBMS_JOB?
View 3 Replies View RelatedServer Administration :: How To Find The Base Table Of A View
Aug 15, 2011How to find the base table of a view,such as a view:
create or replace view vw_test as select * from tb_test;
Is there dic view to get the base table of view?
Server Administration :: How To Find The Size Of Individual Folder In ASM 10g
Mar 16, 2012Would like to know, how to find the size of individual folder in ASM 10g !
Also I am not able to find the PATH/name of the raw devices in ASM 10g !
Server Administration :: ORA-01555 / Unable To Find Sql_id
Jan 25, 2012I am getting below ORA-01555 error in alert log everyday.
ORA-01555 caused by SQL statement below (SCN: 0x09ad.86a4562a):
Sat Jan 21 08:39:45 2012
SELECT (NVL(MAX(BLOCK_ID + BLOCKS ),0) * :b1 ) / 1024
FROM DBA_EXTENTS WHERE TABLESPACE_NAME = :b2 AND FILE_ID = :b3
I cannot able to find the sql_id here. So how can I find from which process or session this query is firing? before increasing the undo size, I need to analyze as why it is occuring?
undo_management string MANUAL
undo_retention integer 900
undo_suppress_errors boolean FALSE
undo_tablespace string
Server Administration :: Find Database Is Corrupted Or Crashed
Mar 3, 2012how will you find your db is Corrupted or crashed. how will u recover it.
View 2 Replies View RelatedServer Administration :: How To Find Which Table Or Index Needs To Be Reorg
Apr 21, 2009How to find which table or Index needs to be reorg..??
IS there any Query!!!.
Server Administration :: Find Out Used Space Of A Specific Datafile
Mar 21, 2012post some script which will find out the used space of a specific datafile.
View 5 Replies View RelatedServer Administration :: Change Space Allocation For Character Columns In Database
Oct 24, 2012I want to change space allocation for character columns in my database, So it will store them as 'CHAR' and not 'BYTE'.my character set is
SQL> SELECT VALUE FROM V$NLS_PARAMETERS WHERE PARAMETER='NLS_CHARACTERSET';
VALUE
----------------------------------------------------------------
AL32UTF8
SQL> alter system set NLS_LENGTH_SEMANTICS='CHAR' scope=both;
System altered.I bounced the instance just to make sure
System altered.
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
Connected to an idle instance.
SQL>
SQL>
SQL> startup
ORACLE instance started.
[code].....
And then I want to see that when I create a table with some varchar2 column,The space for it will be allocated by chars, and not by bytes! However, when I run a check of create table, this is what I get:
SQL> drop table check_char;
Table dropped.
SQL> create table check_char (some_name varchar2(10));
Table created.
SQL> select a.char_used
2 from all_tab_columns a
3 where table_name='CHECK_CHAR'
4 and a.owner='SYS';
C
-
B
SQL>
What is the reason for space allocation to remain in BYTES and not CHAR, or what else I can check?
Server Administration :: Find SID From Current Session As It Make Connection With DB
Dec 27, 2011How to find the sid from v$session of my current session.
I want to ask:
Let say I have open 10 TOAD session and only in one toad session i have fired a sql query ( the rest 9 session are just blank), then the rest 9 status are in active status. Now, how i can figure out which sid ( from v$session ) belongs to which session as all the 9 session having nothing to run.
Quote: My main intention is to find out the current session sid as soon as it make connection with DB.
Server Administration :: Find Out Active Schemas In 9i Oracle Database?
Dec 9, 2010findout and to fill up the excel which lists down the Database schemas and states whether they have in active / or not.
Active state may be determined whether it has been used for the last 3 months or so. The last updated time may be a good indicator of the same.
Server Administration :: What Are ASMlib Devices And How To Find Group Permission Of It
Jan 18, 2013what are ASMlib devices and how to find the group permission of it ?
View 1 Replies View RelatedServer Administration :: Query To Find Hostname For Oracle Session
May 20, 2010How I can find the hostname for an oracle session id?
View 4 Replies View RelatedServer Administration :: To Find Out The Database Is Using Cost Based Analyzer
May 23, 2012How to find out the database is using Cost based analyzer?
Currently database is set to ALL_ROWS.
SQL> show parameter optimizer_mode
NAME TYPE VALUE
------------------------------------ ----------- -----------
optimizer_mode string ALL_ROWS
SQL>
SQL>
Server Administration :: Find Tablespace Usage Including Datafiles
May 25, 2010I am looking for a script to find the tbs usage including datafiles. Tablespaces Datafile Size Used Free Used% Free% Max MB
Need all the data in MB and all the datafile space in every tablespace.I have searched internet,but couldn't find this type of format.
Server Administration :: Find Out Difference Of Data For Some Tables Between Current And Previous Day
May 26, 2011We want to find out difference of data for some tables between current day & previous day. We can use query with minus operation but it will take lot of time since table size is in range from 200 to 500 GB. We have to do this exercise every day.
View 5 Replies View RelatedServer Administration :: How To Find Out List Of DB_LINKS That Uses User Account In Database
Jun 6, 2011How to find out list of DB_LINKS that uses user account in database ?
View 9 Replies View RelatedServer Administration :: How To Find Out Number Of CPUs Allocated To Specific Database
Aug 1, 2011when we ran SELECT statement against CUBE, we got below wait event: resmgr: cpu quantum.Further, we checked below 2 parameters :
NAME VALUE
------------------------- --------------------------------------------------
resource_limit TRUE
resource_manager_plan SCHEDULER[0x12B943C]:DEFAULT_MAINTENANCE_PLAN
[code]....
It has been found that these sessions did not get enough CPU to process the request. how to find out how many CPU has been allocated to this database ?
> uname -a
Linux dukedmts03db02.corp.cox.com 2.6.18-128.1.16.0.1.el5 #1 SMP Tue Jun 30 16:48:30 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
how to analyze how much % of CPU being utilized for a specific session ?
Server Administration :: How To Find And Close Open Cursor List Without Restarting
May 28, 2013In my environment found maximum open cursor exceeds error. So how can I found the open cursor list and how can I close that cursor without restarting. Any SQL commands to close the open cursor.
View 4 Replies View RelatedServer Administration :: Find Maximum Number Of Concurrent Logins Over A Period Of 1 Month
Nov 18, 2011Need to find out what the maximum number of concurrent logins are over a period of 1 month. We need to do this as we may need to buy more licences.
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