I have some table spaces manual and others automatic, i just want to know what's the recommended one, to change it to the best way.
How to change Segment Space Management of a tablespace from MANUAL to AUTO? in oracle 10g R2 and also want to know the main difference between Manaul and Automatic Segment Space Management.
Version: 10.2, 11.2Platform : Unix, Linux flavours
Question1. From googling , I gather that ASSM ( Automatic Segment Space Management ) is a new method used by Oracle to manage space inside data block. If this is the case, then it should have been named 'Automatic Block Space management' . Right ?
Question2.What was the most notable advantage in your opinion in using ASSM as opposed Manual Segment space management ?
am using Oracle 10.2.0.4 on win 2008 server SP2. I would like to know if we can set the Segment Space Management feature to AUTO for RBS and Temporary tablespaces. As the data is not permanent in these tablespaces, will it manage automatically?
Presently its Segment Space Mgmt is manual for System, RBS, Temporary tablespaces.
the syntax to make a tablespace's segment space mnagement auto which is segement management is *manual* and exent management is *local autoallocate*.
View 2 Replies View RelatedI have a quick question about Automatic Memory Management in 11g. I know that it combines the SGA and PGA components together, but the pga_aggregate_target (in 10g) was a target, rather than a strict limit. In certain circumstances you could (and we have) exceed the pga_ aggregate_ target by quite some way.
If I use AMM, does this enforce a limit on the PGA usage – or if I through enough bind variables at it, can I still exceed the ‘target’?
what is difference between san and asm because san also provide mirroring like asm,why we should go for asm.
View 7 Replies View RelatedWhat is Stripping concept in Automatic Storage Management?
How it spreads the database files across the disk group (Suppose i am having 4 disks in my disk group)?
We have a 2 node rac cluster running on HPUX Itanium platform running oracle rdbms 10.2.0.4 that is currently configured using raw devices for ocr, voting disk, and all of the datafiles. We have a business requirement that is mandating that we have to use TDE tablespace encryption and in order to do so we must now upgrade to 11g.We are in the planning stages for the upgrade process and I am just trying to understand or find out what is going to be the best method to move the data that is currently in the tablespaces on the raw devices over to new tablespaces that will be created within ASM and will be created as TDE encrypted tablespaces?Our database is about 1.8 TB and we have alot of fairly large critical transactional tables that support a 24 x 7 oltp environment that cannot afford downtime.
View 2 Replies View RelatedI have read this article:
[URL].........
And i see:
Quote:
If MEMORY_TARGET is set to non zero value:
SGA_TARGET, SGA_MAX_SIZE and PGA_AGGREGATE_TARGET are set to 0, 60% of memory mentioned in MEMORY_TARGET is allocated to SGA and rest 40% is kept for PGA.
So, I have set:
alter system set sga_target=0 scope=spfile;
alter system set pga_aggregate_target=0 scope=spfile;
alter system set sga_max_size=0 scope=spfile;
alter system set memory_max_target=512M scope=spfile;
alter system set memory_target=300M scope=spfile;
, and then bounced the instance.
After startup, I see:
SQL> startup
ORACLE instance started.
Total System Global Area 272027648 bytes
Fixed Size 1384012 bytes
Variable Size 100663732 bytes
Database Buffers 163577856 bytes
Redo Buffers 6402048 bytes
Database mounted.
Database opened.
SQL>
But Total System Global Area should't be in that case 60% of memory mentioned in MEMORY_TARGET? Memory mentioned in MEMORY_TARGET was 300M, and 60% of 300M is 180M, which is not 272027648 bytes.
I just want to use automatic memory management, so I've set the other parameters above to 0. My instance is on my local machine, so just for my own personal use.
Sun Solaris 10, Oracle 11gr2 x86 How are you doing? I am trying to build a test system. I never build ASM before. if I need to install database first then Migrating to ASM? The other problem I am having is that I only have a Raw disk. I have one disk for root and oracle and the other one for Raw disk for ASM. Do you know it's possible to build ASM on 1 raw disk?
View 3 Replies View RelatedI have a Linux box with the below configurations:-
Linux blrulvremoradb02 2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:39 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
Last time my UNIX administrator have done a partition in this box. I have 100GB lun allocated to this box which is spilitted in two mount points.
/u01 is having 30GB and /u02 is having 70GB. I want to build a ASM in this box and install Oracle 11.2.0.1 and for that I need raw disk.
Is there any useful links or can you guide me to achieve this... My UNIX admin is on leave for new year and I want to do this by my own..
If the ASM Re balance occur automatically. What events can cause the ASM Re balance to be triggered?
I understand, we can manually re balance the disks in a disk group. I would like to know when this will happen automatically.
We are trying to increase ASM disk space and with respect to it when we are trying to allocate more space this question came across my mind. Now this was previously configured by my previous SA.
[root@oracledbtest1 ~]# /etc/init.d/oracleasm querydisk -d `/etc/init.d/oracl
cut -f2,10,11 -d" " | perl -pe 's/"(.*)".*[(.*), *(.*)]/$1 $2 $3/g;' |
while read v_asmdisk v_minor v_major
do
v_device=`ls -la /dev | grep " $v_minor, *$v_major " | awk '{print $10}'`
echo "ASM disk $v_asmdisk based on /dev/$v_device [$v_minor, $v_major]"
[code]....
why are my LUN's showing different sizes on RAC and also the best way to allocate the space to the disks in the above scenario.
I'm using ASM on LUNs from an EMC SAN, fronted by PowerPath. Right now I have only one fiber path to the SAN, so /dev/emcpowera3 maps directly to /dev/sda3, for example. Oracle had a typo in what they told me to do in /etc/sysconfig/oracleasm*, so the scan picks up both devices.
#/etc/init.d/oracleasm querydisk -p ASMVOL_01
Disk "ASMVOL_01" is a valid ASM disk
/dev/emcpowera3: LABEL="ASMVOL_01" TYPE="oracleasm"
/dev/sda3: LABEL="ASMVOL_01" TYPE="oracleasm"
But I don't think it can be using both. How do I see which one it's actually using?
*They said:
ORACLEASM_SCANORDER="emcpower*"
ORACLEASM_SCANEXCLUDE="sd"
But I think that should be "sd*".
We have Oracle ASM and installing 11.1.0.6 on a new machine (eventually will apply 11.1.0.7 patchset). So we are on 11g R1 in production environments.
When installing Oracle ASM 11.1.0.6, the root.sh fails
I checked various metalink notes, all settings are OK. We have ASMLib and i have configured ASMLib with the new disks prior to the ASM installation
Just to rule out the rootcause is with ASMLib , I have also disabled it. Still same problem. I ran the usual localconfig delete and localconfig add too.
Startup will be queued to init within 30 seconds.
Checking the status of new Oracle init process...
Expecting the CRS daemons to be up within 600 seconds.
Giving up: Oracle CSS stack appears NOT to be running.+
Oracle CSS service would not start as installed+
Automatic Storage Management(ASM) cannot be used until Oracle CSS service is started+
Finished product-specific root actions.+
SO: RHEL6
RDBMS: 11.2.0.3
Standalone Server
I'll install a Oracle Database 11gR2 with ASM on RHEL6 (standalone, not RAC).
Is ASMLIB supported by RHEL6?
Suppose i have created a diskgroup using
CREATE DISKGROUP disk_group_1 NORMAL REDUNDANCY
FAILGROUP failure_group_1 DISK
'/devices/diska1' NAME diska1,
'/devices/diska2' NAME diska2
FAILGROUP failure_group_2 DISK
'/devices/diskb1' NAME diskb1,
'/devices/diskb2' NAME diskb2;
now i want to add more disk in diskgroup then we can use
ALTER DISKGROUP disk_group_1 ADD DISK
'/devices/disk*3',
now my question is
(1) in which failgroup thE Disk*3 will be added ?
(2) How ican maintain eqal no of disk with same size availble in each FAILGROUP for data mirroring or redundancy by ASM ?
I am not using RAC (to my knowledge), but I installed grid so I can use ASM with my RDBMS.
Recently I noticed that the "CRS Listener" service was not started, when I try to start it then it immediately stops. It does not seem to affect the databases, they are still up and running. What is this service used for and how can I get it to start. I am using Oracle Enterprise Server 11.2.0.3 and Grid 11.2.0.3 on a Windows 2008 R2 64-bit server.
We have standalone database running on ASM. Its 11Gr2 linux version5 server. After the Database bounce, the DB isnt coming up and is showing the below error.
SQL> startup nomount
ORA-01078: failure in processing system parameters
ORA-01565: error in identifying file '+DATA/test/spfiletest.ora'
ORA-17503: ksfdopn:2 Failed to open file +DATA/test/spfiletest.ora
ORA-15056: additional error message
ORA-17503: ksfdopn:2 Failed to open file +DATA/test/spfiletest.ora
ORA-15001: diskgroup "DATA" does not exist or is not mounted
ORA-00450: background process 'ASMB' did not start
ORA-00443: background process "ASMB" did not start
ORA-06512: at line 4
Also i checked the ASM disk groups. I can see all those are MOUNTED properly. In fact i could also see the spfile present in ASM disk physically. It looks like it couldn't identify the spfile to start up the db. however i could see it physically present in ASM disk group.
Find below snapshot.
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED EXTERN N 512 4096 1048576 358400 329103 0 329103 0 N DATA/
MOUNTED EXTERN N 512 4096 4194304 358368 358288 0 358288 0 N FRA/
MOUNTED EXTERN N 512 4096 4194304 20480 18780 0 18780 0 N REDO/
i am adding luns to the asm diskgroups in 10g where to find the grid path in 10g .
in 11g i can find
/orainfra/11.2.0.3/grid/bin/amdu -diskstring '/dev/oracleasm/disks/DATCSLGGPA*' -dump 'DATCSLGGPA'
but i can't able to find in 10g .
I added a new disk to a diskgroup. It starts to rebalance. However, I plan to drop the diskgroup anyhow and recreate it since I want to restore a database to it.(I shouldn't have added the new disk beforehand, my mistake) So now it's rebalancing and may take some hours.Can I drop the diskgroup now?I think there is no way to stop the rebalance?
View 2 Replies View RelatedAfter importing my dump, i have noticed that ARGUMENT$ segment taken more than 9 GB out of my total SYSTEM table space.I belive ARGUMENT$ table is used only to store procedure/package parameter details. But I am not sure Why it has taken more space.
Is there any way we can reduce the SYSTEM table space? using with the below details?
Import Details:
--------------
1) Imported using IMP DP. List of parameters used are userid, logfile, dumpfile, directory, job_name and remap_schema.
2) Dump file size is 3GB
3) The below list will be no. of objects imported using my dump.
OBJECT_TYPE COUNT(1)
------------------- ----------
DATABASE LINK 1
FUNCTION 246
INDEX 4742
[code]...
4) The below list will be amount of space occupied by the segments in the SYSTEM.
col owner form a5 word wrap
col segment_name form a15 word wrap
col segment_type form a15 word wrap
select owner,segment_name,segment_type
,bytes/(1024*1024) size_m
[code]...
After a power failure, I have now dropped disks in my 2 diskgroups DG_RACDATA1 and OCRVD.
Disks has been renamed and prefixed by DROPPED...
Their state is now "FORCING"
Mount status = missing
header status = unknown
Mode status = Offline
These disks was belonging to a failure group with redundancy so the cluster still works ...but I have lost the redundancy.
How to reuse these offline disk or confirm that what I plan to do is good:
Shall I put them online ? ALTER DISKGROUP DG_RACDATA1 ONLINE DISK DROPPED0000_DG_RACDATA1
Shall I drop them ? ALTER DISKGROUP DG_RACDATA1 DROP DISK DROPPED0000_DG_RACDATA1 FORCE
and then: zeroing them and readd to failgroup ? but how ?
Background: We are migrating a lot of databases from one SAN appliance to another. We are doing this by adding new disks from the new SAN appliance to the existing disk groups, re balancing, removing the old disks from the disk groups, and then re balancing again.
Question: If I execute two ALTER commands with the same power on 2 or more separate disk groups, do both operations start executing right away? Or do they queue up and execute one after another?
I ask because we would like to queue up several re-balances so we don't have DBAs watching status bars all day.
I cannot start ASM on my Oracle Database Appliance.
crsctl status resource -t says:
ora.asm
ONLINE ONLINE node1 Started
ONLINE ONLINE node2 Started
however, if I try to access the ASMCMD it says:
[grid@node1 ~]$ asmcmd
Connected to an idle instance.
ASMCMD> startup
ORA-00304: requested INSTANCE_NUMBER is busy
Connected to an idle instance.
Normally ASMlib/oracleasm is used to prepare the disks for ASM. I just wonder, besides this tool, is there any other GUI based tool to use for preparing the ASM disks?
View 2 Replies View Relatedthe steps for moving the files between ASM diskgroups in 10g or 11g?
View 4 Replies View Relatedwhen i configure monitor target in GC12C,1 find i can not add asm instance target, and i use scan ip in 11GR2 rac ( two nodes )the problem is plublic IP's 1521 port not accept connect request from remote IP
error from gc12c
Failed to connect to the ASM: IO Error: The Network Adapter could not establish the connection The Connect Descriptor was (DESCRIPTION=(ADDRESS_LIST = (ADDRESS=(PROTOCOL=tcp)(HOST=172.20.101.78)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=+ASM1)(INSTANCE_NAME=+ASM1)(UR=A)(SERVER=DEDICATED)))
[code]....
how can i let GC12C see ASM instance on each node in cluster??
How many ASM instance can reside on one single machine....
View 1 Replies View Relatedin ASM disk group,
(under one directory)
ASMCMD> ls -lt
...(thousands of log files looks like, for example, log_19.26718.790635667),
how can I delete those files older than 10 days in one command line?
