It is possible to use the 10.2 RMAN executable to restore a 9.2 database (same for 11.2 to 11.1 or 11.1 to 10.2, etc) even if the restored datafiles will be stored in ASM.

Define an escape character:
SET ESCAPE '\'
SELECT '\&abc' FROM dual;

SET SCAN OFF
SELECT '&ABC' x FROM dual;

The simplest way is NULLIF
NULLIF (x, y)
returns NULL if x and y are the same; otherwise, it returns x. So
n / NULLIF (d, 0)
returns NULL if d is 0; otherwise, it returns n/d.

Purpose

The SQL*Plus, the primary interface to the Oracle Database server, 
provides a powerful yet easy-to-use environment for querying, defining, and controlling data.
However, some command-line utilities, for example bash, provide features such as:

- command history (up/down arrow keys)
- auto completion (TAB key)
- searchable command line history (Ctrl+r)

The scope of this bulletin is to provide these features to SQL*Plus.

Scope and Application

For all SQL*Plus users, but in particular for Linux platforms as this note has been written thinking at that Operating System. In any case this idea can work on other OSs as well.
SQL*Plus command line history completion

SQL*Plus users working on Linux platforms have the opportunity to use a readline wrapper "rlwrap". rlwrap is a 'readline wrapper' that uses the GNU readline library to allow the editing of keyboard input for any other command. Input history is remembered across invocations, separately for each command; history completion and search work as in bash and completion word lists can be specified on the command line. Since SQL*Plus is not built with readline library, rlwrap is just doing the job.

- 'rlwrap' is really a tiny program. It's about 24K in size, and you can download it from the official developper (Hans Lub) website http://utopia.knoware.nl/~hlub/uck/rlwrap/

What do you need to compile and run it
A newer (4.2+) GNU readline (you can get it at ftp://ftp.gnu.org/gnu/readline/)
and an ANSI C compiler. 
rlwrap compiles and runs on many Unix systems and on cygwin.

Installation should be as simple as:

./configure
make
make install
 

Compile rlwrap statically

If you don't have the root account you can compile rlwrap statically
and install it under $HOME/bin executing this command:

CFLAGS=-I$HOME/readline-6.0 CPPFLAGS=-I$HOME/readline-6.0 LDFLAGS=-static ./configure --prefix=$HOME/bin
make
make install

where $HOME/readline-6.0 is the 'readline' source location

 



A different option and if your are using Linux, it is to download the newest source rpm package from e.g.: http://download.fedora.redhat.com/pub/epel/5/SRPMS/rlwrap-0.37-1.el5.src.rpm and build the binary rpm package by

# rpm -ivh rlwrap-0.37-1.el5.src.rpm
# cd /usr/src/redhat/SPECS/
# rpmbuild -bb rlwrap.spec
# cd ../RPMS/<arch>/
and then you can install it as any other rpm package by e.g.

# rpm -ivh rlwrap-0.37-1.x86_64.rpm
 

- After installing the package, you should to configure a user's environment so that it makes use of the installed utility, add the following line in '/etc/bashrc' (globally) or in '${HOME}/.bashrc' (locally for the user). Change '<path>' with the right path of your rlwrap:

alias sqlplus='<path>/rlwrap ${ORACLE_HOME}/bin/sqlplus'
The modified .bashrc won't take effect until you launch a new terminal session or until you source .bashrc. So shut down any terminals you already have open and start a new one.

If you now launch SQL*Plus in exactly the way you've used so far, you should be able to type one SQL command and submit it, and then immediately be able to press the up-arrow key and retrieve it. The more SQL commands you issue over time, the more commands rlwrap will remember. As well as just scrolling through your previous SQL commands, you can press 'Ctrl+r' to give you a searchable command line history.


You can also create your own '${HOME}/.sqlplus_completions' file (locally)or '/usr/share/rlwrap/sqlplus' file (globally) with all SQL reserved words (or in case whatever you want) as your auto-completion list (see rlwrap man page for dettails).

And example of '${HOME}/.sqlplus_completions' with some reserved words:

 

COPY PAUSE SHUTDOWN 
DEFINE PRINT SPOOL 
DEL PROMPT SQLPLUS 
ACCEPT DESCRIBE QUIT START 
APPEND DISCONNECT RECOVER STARTUP 
ARCHIVE LOG EDIT REMARK STORE 
ATTRIBUTE EXECUTE REPFOOTER TIMING 
BREAK EXIT REPHEADER TTITLE 
BTITLE GET RESERVED UNDEFINE 
CHANGE HELP RESERVED VARIABLE 
CLEAR HOST RUN WHENEVER 
copy pause shutdown 
define print spool 
del prompt sqlplus 
accept describe quit start 
append disconnect recover startup 
archive log edit remark store 
attribute execute repfooter timing 
break exit repheader ttitle 
btitle get reserved undefine 
change help reserved variable 
clear host run whenever 

ALL ALTER AND ANY ARRAY ARROW AS ASC AT 
BEGIN BETWEEN BY 
CASE CHECK CLUSTERS CLUSTER COLAUTH COLUMNS COMPRESS CONNECT CRASH CREATE CURRENT 
DECIMAL DECLARE DEFAULT DELETE DESC DISTINCT DROP 
ELSE END EXCEPTION EXCLUSIVE EXISTS 
FETCH FORM FOR FROM 
GOTO GRANT GROUP 
HAVING 
IDENTIFIED IF IN INDEXES INDEX INSERT INTERSECT INTO IS 
LIKE LOCK 
MINUS MODE 
NOCOMPRESS NOT NOWAIT NULL 
OF ON OPTION OR ORDEROVERLAPS 
PRIOR PROCEDURE PUBLIC 
RANGE RECORD RESOURCE REVOKE 
SELECT SHARE SIZE SQL START SUBTYPE 
TABAUTH TABLE THEN TO TYPE 
UNION UNIQUE UPDATE USE 
VALUES VIEW VIEWS 
WHEN WHERE WITH 
all alter and any array arrow as asc at 
begin between by 
case check clusters cluster colauth columns compress connect crash create current 
decimal declare default delete desc distinct drop 
else end exception exclusive exists 
fetch form for from 
goto grant group 
having 
identified if in indexes index insert intersect into is 
like lock 
minus mode 
nocompress not nowait null 
of on option or orderoverlaps 
prior procedure public 
range record resource revoke 
select share size sql start subtype 
tabauth table then to type 
union unique update use 
values view views
 

Note: 
You can use 'rlwrap' with all Oracle command line utilities such as Recovery Manager (RMAN) , Oracle Data Pump (expdp), ASM command (asmcmd), etc. 

i.e.: 


alias rman='/usr/bin/rlwrap ${ORACLE_HOME}/bin/rman' 
alias expdp='/usr/bin/rlwrap ${ORACLE_HOME}/bin/expdp'
alias asmcmd='/usr/bin/rlwrap ${ORACLE_HOME}/bin/asmcmd'
References

http://utopia.knoware.nl/~hlub/uck/rlwrap/
ftp://ftp.gnu.org/gnu/readline
http://download.fedora.redhat.com/pub/epel

Master Note for Automatic Storage Management (ASM) [ID 1187723.1]


-- HOMEs COMPATIBILITY MATRIX

Note 337737.1 Oracle Clusterware - ASM - Database Version Compatibility
Note 363254.1 Applying one-off Oracle Clusterware patches in a mixed version home environment


-- BEST PRACTICE

ASM Technical Best Practices (Doc ID 265633.1)


-- SETUP 
How To Setup ASM on Linux Using ASMLIB Disks, Raw Devices or Block Devices? [ID 580153.1] <— mentions 10gR2 and 11gR2 configuration
Device Persistence and Oracle Linux ASMLib [ID 394959.1]


MOVING ORACLE_HOME
  	Doc ID: 	Note:28433.1

Recover database after disk loss
  	Doc ID: 	Note:230829.1

Doing Incomplete Recovery and Moving Redo Logs From Corrupted Disk
  	Doc ID: 	Note:77643.1 	

Cross-Platform Migration Using Rman Convert Database on Destination Host ( Windows 32-bit to Linux 32-bit )
  	Doc ID: 	Note:414878.1

How to recover and open the database if the archivelog required for recovery is either missing, lost or corrupted?
  	Doc ID: 	Note:465478.1

Recovering From A Lost Control File
  	Doc ID: 	Note:1014504.6

ORACLE V6 INSTALLATION PROCEDURES
  	Doc ID: 	Note:11196.1




-- TROUBLESHOOTING

How To Gather/Backup ASM Metadata In A Formatted Manner?
  	Doc ID: 	470211.1

Troubleshooting a multi-node ASMLib installation (Doc ID 811457.1)
ASM is Unable to Detect ASMLIB Disks/Devices. (Doc ID 457369.1)


HOW TO MAP ASM FILES WITH ONLINE DATABASE FILES
  	Doc ID: 	552082.1



-- TRACE DEVICES
How to identify exactly which disks on a SAN have been allocated to an ASM Diskgroup (Doc ID 398435.1)
How to map device name to ASMLIB disk (Doc ID 1098682.1)



-- IMBALANCE

Script to Report the Percentage of Imbalance in all Mounted Diskgroups (Doc ID 367445.1)



-- PERFORMANCE
Comparing ASM to Filesystem in benchmarks [ID 1153664.1]
File System's Buffer Cache versus Direct I/O [ID 462072.1]
question regarding "ASM Performance", version 10.2.0 http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:2109833600346625821
http://kevinclosson.wordpress.com/2007/02/11/what-performs-better-direct-io-or-direct-io-there-is-no-such-thing-as-a-stupid-question/
http://www.freelists.org/post/oracle-l/filesystemio-options-setting,4
http://www.freelists.org/post/oracle-l/split-block-torn-page-problem,6
ASM Inherently Performs Asynchronous I/O Regardless of filesystemio_options Parameter [ID 751463.1]







--======================
-- ASM
--======================

Problems with ASM in 10gR2
  	Doc ID: 	Note:353065.1

Deployment of very large databases (10TB to PB range) with Automatic Storage Management (ASM)
  	Doc ID: 	Note:368055.1

ASMIOSTAT Script to collect iostats for ASM disks
  	Doc ID: 	Note:437996.1

How to copy a datafile from ASM to a file system not using RMAN
  	Doc ID: 	Note:428893.1

How to upgrade ASM instance from 10.1 to 10.2 (Single Instance)
  	Doc ID: 	Note:329987.1

Problems with ASM in 10gR2
  	Doc ID: 	Note:353065.1

Unable to startup ASM instance after OS kernel upgrade
  	Doc ID: 	Note:313833.1

How To Extract Datapump File From ASM Diskgroup To Local Filesystem?
  	Doc ID: 	Note:566941.1

How To Determinate If An EMCPOWER Partition Is Valid For ASMLIB?
  	Doc ID: 	Note:566676.1

HOW TO MAP ASM FILES WITH ONLINE DATABASE FILES
  	Doc ID: 	Note:552082.1

How To Add a New Disk(s) to An Existing Diskgroup on RAC (Best Practices).
  	Doc ID: 	Note:557348.1

Diagnosing Disk not getting discovered in ASM
  	Doc ID: 	Note:311926.1

How To Gather/Backup ASM Metadata In A Formatted Manner?
  	Doc ID: 	Note:470211.1

How To Move The Database To Different Diskgroup (Change Diskgroup Redundancy)
  	Doc ID: 	Note:438580.1

Tips On Installing and Using ASMLib on Linux
  	Doc ID: 	Note:394953.1

RHEL5 and ASMLib
  	Doc ID: 	Note:434775.1

Oracle Linux ASMLib README Documentation
  	Doc ID: 	Note:454035.1

ASM Using Files Instead of Real Devices on Linux
  	Doc ID: 	Note:266028.1

CHECKSUMS DIFFER FOR ASM DATAFILES WHEN COPIED USING XDB/FTP
  	Doc ID: 	Note:459819.1

How to rename/move a datafile in the same ASM diskgroup
  	Doc ID: 	Note:564993.1

How To Remove An Empty ASM System Directory
  	Doc ID: 	Note:444812.1

Database Instance Crashes In Case Of Path Offlined In Multipath Storage
  	Doc ID: 	Note:555371.1

How To Change ASM SYS PASSWORD ?
  	Doc ID: 	Note:452076.1

ASM Instances Are Not Mounted Consistently
  	Doc ID: 	Note:351114.1

How To Delete Archive Log Files Out Of +Asm?
  	Doc ID: 	Note:300472.1

ENABLE/DISABLE ARCHIVELOG MODE AND FLASH RECOVERY AREA IN A DATABASE USING ASM
  	Doc ID: 	Note:468984.1

Unable To Make Disks Available From Asmlib Using SAN
  	Doc ID: 	Note:302020.1

Oracle ASM and Multi-Pathing Technologies
  	Doc ID: 	Note:294869.1

How to rename ASM disks?
  	Doc ID: 	Note:418542.1

Does Asm Survive Change Of Disc Path?
  	Doc ID: 	Note:466231.1

Steps To Migrate/Move a Database From Non-ASM to ASM And Vice-Versa
  	Doc ID: 	Note:252219.1

Raw Devices and Cluster Filesystems With Real Application Clusters
  	Doc ID: 	Note:183408.1

How To Resize An ASM Disk On Release 10.2.0.X?
  	Doc ID: 	Note:470209.1

ASM Fast Mirror Resync - Example To Simulate Transient Disk Failure And Restore Disk
  	Doc ID: 	Note:443835.1


----------------------------------------------------------------------------------




Note:294869.1 Oracle ASM and Multi-Pathing Technologies
Note:461079.1 ASM does not discover disk(s) on AIX platform
Note:353761.1 Assigning a PVID To An Existing ASM Disk Corrupts the ASM Disk Header
Note:279353.1 Multiple 10g Oracle Home installation - ASM
Note:265633.1 ASM Technical Best Practices
Note:243245.1 10G New Storage Features and Enhancements
Note:282036.1 Minimum Software Versions and Patches Required to Support Oracle Products on IBM pSeries
Note:249992.1 New Feature on ASM (Automatic Storage Manager)
Note:252219.1 Steps To Migrate Database From Non-ASM to ASM And Vice-Versa
Note:303760.1 ASM & ASMlib Using Files Instead of Real Devices on Linux
Note:266028.1 ASM Using Files Instead of Real Devices on Linux
Note:471877.1 Raw Slice Not Showing Up When Trying To Add In Existing ASM Diskgroup
Note:551205.1 11g ASM New Features Technical White Paper
Note:402526.1 Asm Devices Are Still Held Open After Dismount or Drop
Note:452076.1 How To Change ASM SYS PASSWORD 
Note:340277.1 How to connect to ASM instance from a remote client (SQL*NET)
Note:351866.1 How To Reclaim Asm Disk Space
Note:470573.1 How To Delete SPFILE in +ASM DISKGROUP And Recreate in $ORACLE_HOME Directory
Note:458419.1 How to Bind RAW devices to Physical Partitions on Linux to be used by ASM
Note:469082.1 How To Setup ASM (10.2) on Windows Platforms
Note:471055.1 OUI Complains That ASM Is Not Release 2 While Installing 10g Database
Note:390274.1 How to move a datafile from a file system to ASM
Note:460909.1 Asm Can'T See Disks After Upgrade to 10.2.0.3 on Itanium
Note:382669.1 Duplicate database from non ASM to ASM (vise versa) to a different host
Note:413389.1 Asynchonous I/O not reported in /proc/slabinfo KIOCB slabdata
Note:437555.1 Created ASM Stamped Disks But Unable To Create Diskgroup
Note:370355.1 How to upgrade an ASM Instance From 10.2.0 lower version To higher version
Note:452924.1 How to Prepare Storage for ASM
Note:313387.1 HOWTO Which Disks Are Handled by ASMLib Kernel Driver
Note:331661.1 How to Re-configure Asm Disk Group
Note:428893.1 How to copy a datafile from ASM to a file system not using RMAN
Note:416046.1 ASM - Internal Handling of Block Corruptions
Note:340848.1 Performing duplicate database with ASM-OMF-RMAN
Note:342234.1 How to relocate an spfile from one ASM diskgroup to another on a RAC environment
Note:330084.1 Install: How To Migrate Oracle10g R1 ASM Database To 10g R2
Note:209850.1 RAC Survival Kit ORA-29702
Note:467354.1 ASM Crashes When Rebooting a Server With ORA-29702 Error
Note:334726.1 Cannot configure ASM because CSS Does Not Start on AIX 5L



STARTUP
Note:404728.1 Automatic Database Startup Does not Work With ASM through DBSTART.
Note:264235.1 ORA-29701 On Reboot When Instance Uses Automatic Storage Management (ASM)



DBMS_FILE_TRANSFER
Note:330103.1 How to Move Asm Database Files From one Diskgroup To Another


Async IO
Note:432854.1 Asynchronous IO Support on OCFS-OCFS2 and Related Settings filesystemio_options, disk_asynch_io
Note 237299.1 HOW TO CHECK IF ASYNCHRONOUS IO IS WORKING ON LINUX


Windows
Note 331796.1 How to setup ASM on Windows


11g
Note:429098.1 11g ASM New Feature
Note:443835.1 ASM Fast Mirror Resync - Example To Simulate Transient Disk Failure And Restore Disk
Note:445037.1 ASM Fast Rebalance





Note 199457.1 Step-By-Step Installation of RAC on IBM AIX (RS/6000)
Note:240575.1 RAC on Linux Best Practices
Note:245356.1 Oracle9i - AIX5L Installation Tips


Note:29676.1 Making the decision to use raw devices
Note:38281.1 RAID and Oracle - 20 Common Questions and Answers
ASM & ASMlib Using Files Instead of Real Devices on Linux
  	Doc ID: 	Note:303760.1
Configuring Oracle ASMLib on Multipath Disks
  	Doc ID: 	Note:309815.1
Tips On Installing and Using ASMLib on Linux
  	Doc ID: 	Note:394953.1
Raw Devices on Linux
  	Doc ID: 	Note:224302.1









-- PERFORMANCE 

File System's Buffer Cache versus Direct I/O
  	Doc ID: 	Note:462072.1

ASMIOSTAT Script to collect iostats for ASM disks
  	Doc ID: 	437996.1










Note:341782.1 Linux Quick Reference
Note:264736.1 How to Create a Filesystem inside of a Linux File (loop device)




-- 11gR2 BUG DETECT ASM ON OCR
Device Checks for ASM Fails with PRVF-5150: Path ORCL: is not a valid path [ID 1210863.1]
FAQ ASMLIB CONFIGURE,VERIFY, TROUBLESHOOT [ID 359266.1]
http://oraclue.com/2010/11/09/grid-11-2-0-2-install-nightmare/
http://gjilevski.wordpress.com/2010/10/03/fresh-oracle-11-2-0-2-grid-infrastructure-installation-prvf-5150-prvf-5184/
PRVF-5449 : Check of Voting Disk location "ORCL:(ORCL:)" failed [ID 1267569.1]



-- DROP DISK ISSUE, BUG

ORA-15041 V$ASM_DISK Shows HUNG State for Dropped Disks
  	Doc ID: 	Note:419014.1

ORA-15041 IN A DISKGROUP ALTHOUGH FREE_MB REPORTS SUFFICIENT SPACE
  	Doc ID: 	Note:460155.1



-- DROP/CREATE

How To Add Back An ASM Disk or Failgroup (Normal or High Redundancy) After A Transient Failure Occurred (On Release 10.2. or 10.1)? (Doc ID 946213.1)




-- BUG FIXES ON AIX 64bit 10.2.0.2

Note 433399.1-Could not add datafile due to ORA-01119, ORA-17502 and ORA-15041

	1. Apply fix for Patch 4691191.
	OR
	2. Apply 10.2.0.3.




-- AIX

Subject: 	ASM does not discover disk(s) on AIX platform
  	Doc ID: 	Note:461079.1 	Type: 	PROBLEM
  	Last Revision Date: 	24-JAN-2008 	Status: 	PUBLISHED


-- UPGRADE ASM

How to upgrade ASM instance from 10.1 to 10.2 (Single Instance)
  	Doc ID: 	Note:329987.1
  	
How To Upgrade ASM from 10.2 to 11.1 (single Instance configuration / Non-RAC)?
 	Doc ID:	Note:736121.1
 	
How To Upgrade ASM from 10.2 to 11.1 (RAC)?
 	Doc ID:	Note:736127.1
 	
How to upgrade an ASM Instance From 10.2.0 lower version To higher version? from 10.2.0.1 to patchset 10.2.0.2
 	Doc ID:	Note:370355.1
 	
Install: How To Migrate Oracle10g R1 ASM Database To 10g R2
 	Doc ID:	Note:330084.1
  	
Asm Can'T See Disks After Upgrade to 10.2.0.3 on Itanium
 	Doc ID:	Note:460909.1
 	


-- UNINSTALL

How to cleanup ASM installation (RAC and Non-RAC)
  	Doc ID: 	Note:311350.1




-- QUERY

ASM Extent Size 
  Doc ID:  Note:465039.1 

How To Identify If A Disk/Partition Is Still Used By ASM, Has Been Used by ASM Or Has Not Been Used by ASM (Unix/Linux)?
  	Doc ID: 	603210.1



-- DEBUG

Information to gather when diagnosing ASM space issues
 	Doc ID:	Note:351117.1

How To Gather/Backup ASM Metadata In A Formatted Manner? 
  Doc ID:  Note:470211.1 
 	
 	
 	
-- COMPATIBLE.ASM

Bug 7173616 - CREATE DISKGROUP with compatible.asm=10.2 fails (OERI:kfdAllocateAu_00)
 	Doc ID:	Note:7173616.8
 	
 	
-- 11g NEW FEATURE

11g ASM New Feature
 	Doc ID:	Note:429098.1
 	
 	


-- RESIZE

How to resize a physical disk or LUN and an ASM DISKGROUP
  	Doc ID: 	311619.1



-- RAC ASM

How to Convert a Single-Instance ASM to Cluster ASM
  	Doc ID: 	452758.1




-- LABEL

Adding The Label To ASMLIB Disk Using 'oracleasm renamedisk' Command
  	Doc ID: 	280650.1 	


-- REMOVE INSTANCE

How to remove an ASM instance and its corresponding database(s) on WINDOWS?
  	Doc ID: 	342530.1 	



-- ADD DISK

How To Add a New Disk(s) to An Existing Diskgroup on RAC (Best Practices). (Doc ID 557348.1)



-- ADD DISK WINDOWS

RAC Assurance Support Team: RAC Starter Kit and Best Practices (Windows) [ID 811271.1]
How To Setup ASM (10.2) on Windows Platforms [ID 469082.1]
ORA-17502 and ORA-15081 when creating a datafile on a ASM diskgroup [ID 369898.1]
New Partitions in Windows 2003 RAC Environments Not Visible on Remote Nodes [ID 454607.1]
RAC: Frequently Asked Questions [ID 220970.1]
Oracle Tools Available for Working With RAW Partitions on Windows Platforms [ID 555645.1]  	 
How to Extend A Raw Logical Volume in Windows [ID 555273.1]  	 
OCR / Vote disk Maintenance Operations: (ADD/REMOVE/REPLACE/MOVE), including moving from RAW Devices to Block Devices. [ID 428681.1]   <-- helpful
Asmtoolg Generates An Access Violation When Stamping Disks [ID 443635.1]
Disk Is not Discovered in ASM, Diskgroup Creation Fails with Ora-15018 Ora-15031 Ora-15014 [ID 431013.1]  	 



-- REMOVE DISK

How to Dynamically Add and Remove SCSI Devices on Linux
  	Doc ID: 	603868.1


-- RESYNC

ASM 11g New Features - How ASM Disk Resync Works. (Doc ID 466326.1)



-- RENAME DISK

How to rename ASM disks? (Doc ID 418542.1)
Adding The Label To ASMLIB Disk Using 'oracleasm renamedisk' Command (Doc ID 280650.1)
Oracleasm Createdisk Fails: Device '/dev/emcpoweraxx Is Not A Partition [Failed] (Doc ID 469163.1)
New ASMLib / oracleasm Disk Gets "header_status=Unknown" - Cannot be Added to Diskgroup (Doc ID 391136.1)
Oracleasm Createdisk Fails: Device '/dev/emcpoweraxx Is Not A Partition [Failed] (Doc ID 469163.1)



-- PASSWORD

How To Change ASM SYS PASSWORD ?
  	Doc ID: 	452076.1


-- CSS MISCOUNT

How to Increase CSS Misscount in single instance ASM installations
 	Doc ID:	Note:729878.1
 	
10g RAC: Steps To Increase CSS Misscount, Reboottime and Disktimeout
 	Doc ID:	Note:284752.1



-- CLEAN UP ASM INSTALL, UNINSTALL

How to cleanup ASM installation (RAC and Non-RAC)
  	Doc ID: 	311350.1



-- RECREATE ASM DISKGROUPS

Steps to Re-Create ASM Diskgroups
  	Doc ID: 	Note:268481.1



-- DUPLICATE CONTROLFILE

Note 345180.1 - How to duplicate a controlfile when ASM is involved



-- MULTIPLE ASM HOME

Multiple 10g Oracle Home installation - ASM
  	Doc ID: 	279353.1



-- 11g CP command

ASMCMD cp command fails with ORA-15046
  	Doc ID: 	452158.1

ASMCMD - New commands in 11g
  	Doc ID: 	451900.1

Copying File Using ASMCMD Copy Command Failed With ASMCMD-08010
  	Doc ID: 	786364.1

Unable To Copy Directory Using ASMCMD Cp -r Command
  	Doc ID: 	829040.1

Asmcmd CP Command Can Not Copy Files Larger Than 2 GB
  	Doc ID: 	786258.1



-- EXPDP

Creating dumpsets in ASM
  	Doc ID: 	559878.1

How To Extract Datapump File From ASM Diskgroup To Local Filesystem?
  	Doc ID: 	566941.1



-- MIGRATION

How to Prepare Storage for ASM
  	Doc ID: 	452924.1

Exact Steps To Migrate ASM Diskgroups To Another SAN Without Downtime.
  	Doc ID: 	837308.1

Steps To Migrate/Move a Database From Non-ASM to ASM And Vice-Versa
  	Doc ID: 	252219.1

How To Migrate From OCFS To ASM
  	Doc ID: 	579468.1

Install: How To Migrate Oracle10g R1 ASM Database To 10g R2
  	Doc ID: 	330084.1

Migrating Raw Devices to ASMLib on Linux
  	Doc ID: 	394955.1

How To Migrate ASMLIB devices to Block Devices (non-ASMLIB)?
  	Doc ID: 	567508.1



-- FAILOVER

Does Oracle Support Failover Of Asm Based Instance
  	Doc ID: 	762674.1



-- MOVE FILES IN ASM

How to move a datafile from a file system to ASM [ID 390274.1]
How to Copy Archivelog Files From ASM to Filesystem and vice versa [ID 944831.1]
How to transfer backups from ASM to filesystem when restoring to a new host [ID 345134.1]
How To Move Controlfile To ASM [ID 468458.1]
Can RMAN duplex backups to Flash Recovery Area and a Disk location [ID 434222.1]
How to restore archive logs to an alternative location when they already reside on disk [ID 399894.1]
How To Backup Database When Files Are On Raw Devices/File System [ID 469716.1]
RMAN10g: backup copy of database [ID 266980.1]
How To Move The Database To Different Diskgroup (Change Diskgroup Redundancy) [ID 438580.1]  	 



-- 11gR2, Grid Infra
ASM 11.2 Configuration KIT (ASM 11gR2 Installation & Configuration, Deinstallation, Upgrade, ASM Job Role Separation. [ID 1092213.1]
11gR2 Clusterware and Grid Home - What You Need to Know [ID 1053147.1]
Pre 11.2 Database Issues in 11gR2 Grid Infrastructure Environment [ID 948456.1]
Database Creation on 11.2 Grid Infracture with Role Separation ( ORA-15025, KFSG-00312, ORA-15081 ) [ID 1084186.1]




-- ACFS - backup and recovery, rman acfs
https://forums.oracle.com/forums/thread.jspa?threadID=2175933
http://download.oracle.com/docs/cd/E11882_01/server.112/e16102/asmfiles.htm#g1030822   <-- supported files on acfs



-- Backing Up an ASM Instance [ID 333257.1]




-- RAW DEVICES

Raw Devices and Cluster Filesystems With Real Application Clusters
  	Doc ID: 	183408.1



-- ASM SEPARATE HOME

DBCA Rejects Asm Password When Creating a New Database
  	Doc ID: 	431312.1

DBCA Is Unable To Connect To +ASM Instance With Error : Invalid Credentials
  	Doc ID: 	277223.1



Diskgroup Mount with Long ASMLib Labels Fails with ORA-15040 ORA-15042
  	Doc ID: 	787082.1

Placeholder for AMDU binaries and using with ASM 10g
  	Doc ID: 	553639.1

How To Migrate ASMLIB devices to Block Devices (non-ASMLIB)?
  	Doc ID: 	567508.1

Bug 5039964 - ASM disks show as provisioned although kfed shows valid disk header
  	Doc ID: 	5039964.8

ORA-15063 When Mounting a Diskgroup After Storage Cloning
  	Doc ID: 	784776.1

ORA-15036 When Starting An ASM Instance
  	Doc ID: 	553319.1

CASE STUDY - WHAT CAUSED ERROR ora-1186 ora-1122 on RAC with ASM
  	Doc ID: 	333816.1

ASM Using Files Instead of Real Devices on Linux
  	Doc ID: 	266028.1

• Query Tuning

Enterprise Manager (SQL Tuning Advisor)
AWR SQL Report
SQLTXPLAIN
TRCANLZR
PL/SQ_ Profiler
LTOM (Session Trace Collector)
OPDG
SQL Tuning Health-Check Script [ID 1366133.1]

• OS Data

OS_Watcher

• Database Tuning

Enterprise Manager ADDM
ADDM Report
STATSPACK
AWR Report
OPDG

• Hang, Locking, and Transient Issues

ASH Report
LTOM (Hang Detector, Data Recorder)
HangFG

• Error/Crash Issues

Stackx
ORA-600/ORA-7445 Troubleshooter

• RAC

RDA
RACcheck - RAC Configuration Audit Tool [ID 1268927.1] - sample report http://dl.dropbox.com/u/25153503/Oracle/raccheck.html

http://www.orafaq.com/forum/t/164483/0/
--to allocate extent to the table
alter table emp allocate extent;
--the table has columns named col1 and col2 which are clob
--to allocate extents to the columns 
alter table emp modify lob (col1) (allocate extent (size 10m))
/ 
alter table emp modify lob (col2) (allocate extent (size 10m))
/ >> alter table theBLOBtable modify lob (theBLOBcolumn) (allocate extent (instance 1));>> Remember to include the "instance 1" so space is added below HWM, even if
you're not using RAC (ignore documentation's caution: only use it on RAC).

determine the potential benefit of using partitioning, and the overhead

Partitioning is first a way to facilitate administration and secondly for performance.
Unfortunately, the performance benefits are not always attainable and it depends on the data and queries.

If queries select on a range of data (not single block reads), it will probably benefit from partitioning.
If queries select one row at a time (single block reads), it will probably not benefit from partitioning (maybe even worse).

Each query to a partition segment requires a little extra overhead to determine which partition to access.
For hash partitions, the overhead is a mathematical mod function that determines the partition.
For range and list partitions, a dictionary lookup is required to determine which partition the data resides.
So, the overhead is both logical reads and CPU.

For ranges of rows to be selected, the overhead is still applied but normally only once for the requested range.
Index blevel is probably less for partition indexes since there is less data in each partition.
But, the hash/range/list partition determination method overhead may not be noticeable for ranges (especially larger ranges).

Range partitioning is ideal when the partition key is a date since most queries on large tables filter by date.
Aligning range partitions with normal data access requests may result in full table/partition scans which can be really good.
So, knowing the data and data access requirements is key to a successful partitioning effort.

nice writeup by Jack Augustin

Session/System level perf monitoring

• Perfsheet (Performance Visualization) – For Session Monitoring, uses excel sheet
• Ashmon (Active Session Monitoring) – For monitoring Database Session , Ashmon on 64bit http://db-optimizer.blogspot.com/2010/10/ashmon-on-64bit-oracle-11gr2.html, by marcin at github https://github.com/pioro/orasash/
• DB Optimizer - the production version of Ashmon, with cool Visual SQL Tuning! (just like Dan Tow has envisioned)
• ASH Viewer by Alexander Kardapolov http://j.mp/dNidrB
• Lab128 (trial software) – Tool for Oracle Tuning, Monitoring and trace SQL/Stored procedures transactions http://www.lab128.com/lab128_download.htmlhttp://www.lab128.com/lab128_new_features.htmlhttp://www.lab128.com/lab128_rg/html/contents.html Lab128 has automated the pstack sampling, os_explain, & reporting. Good tool to know where the query was spending time http://goo.gl/fyH5x
• Mumbai (freeware) - Performance monitoring tool that integrated Snapper, Orasrp, Statspack viewer, alert log viewer, nice session level profiling, and lots of good stuff! https://marcusmonnig.wordpress.com/mumbai/
• EMlight by Obzora http://obzora.com/home.html - a lightweight web based EM
• Google Chrome AWR Formatter by Tyler Muth - http://tylermuth.wordpress.com/2011/04/20/awr-formatter/ - when you want to drill down on AWR statistics for a specific SNAP_ID this tool can be very helpful. This works only on html format of AWR. I would use it together with the Firefighting Diagnosis excel template of Craig Shallahamer to quickly account the RT = ST+QT
• Snapper (Oracle Session Snapper) - Reports Oracle session level performance counter and wait information in real time http://tech.e2sn.com/oracle-scripts-and-tools/session-snapper - doesn't require Diag&Tuning pack
• MOATS - http://blog.tanelpoder.com/2011/03/29/moats-the-mother-of-all-tuning-scripts/ , http://www.oracle-developer.net/utilities.php
• RAC-aware MOATS - http://jagjeet.wordpress.com/2012/05/13/sqlplus-dashboard-for-rac/ has a cool AAS dashboard with Exadata metrics (smart scans, flash cache, etc.) - this requires Diag&Tuning Pack
• oratop (MOS 1500864.1) - near real-time monitoring of databases, RAC and Single Instance, much like RAC-aware MOATS - doesn't require Diag&Tuning pack, no cool AAS dashboard
• Oracle LTOM (Oracle Lite Onboard Monitor) – Provides automatic session tracing
• Orapub's OSM scripts - A toolkit for database monitoring and workload characterization
• JL references http://jonathanlewis.wordpress.com/2009/06/23/glossary/ , http://jonathanlewis.wordpress.com/2009/12/18/simple-scripts/ , http://jonathanlewis.wordpress.com/statspack-examples/ , http://jonathanlewis.wordpress.com/2010/03/17/partition-stats/
• List of end-user monitoring tools http://www.real-user-monitoring.com/the-complete-list-of-end-user-experience-monitoring-tools/ , http://www.alexanderpodelko.com/PerfManagement.html

SQL Tuning

• SQLTXPLAIN (Oracle Extended Explain Plan Statistics) – Provides details about all schema objects in which the SQL statement depends on.
• Orasrp (Oracle Session Resource Planner) – Builds complete detailed session profile
• gxplan - Visualization of explain plan
• 10053 viewer - http://jonathanlewis.wordpress.com/2010/04/30/10053-viewer/

Forecasting

• r2toolkit - http://karlarao.tiddlyspot.com/#r2project This is a performance toolkit that uses AWR data and Linear Regression to identify what metric/statistic is driving the database server’s workload. The data points can be very useful for capacity planning giving you informed decisions and completely avoiding guesswork!