Server Administration :: ASM / Dropping A Newly Created Disk Group?
Apr 6, 2012
I was setting up disks groups and I accidentally created one group (DATA) with "NORMAL" redundancy but wanted it to be "EXTERNAL". I tried using asmca to remove disks from the group, drop the group, change the redundancy..... All of this failed because there was an spfile on the disk group.
I finally got it to work with using this procedure:
sqlplus '/ as sysasm'
SQL*Plus: Release 11.2.0.3.0 Production on Thu Apr 5 08:58:19 2012
Copyright (c) 1982, 2011, Oracle. All rights reserved.
SQL> drop diskgroup DATA;
drop diskgroup DATA
*
ERROR at line 1:
ORA-15039: diskgroup not dropped
ORA-15053: diskgroup "DATA" contains existing files
[code]....
In summary, I am not sure why changing the redundancy would be so difficult if there is data on the disk group.
i create new database (Student) using command line, now i want to connect with newly created database (using sys as sysdba), but again it directly connected with old database (ORCL). So what should i do to connect with newly created database (Student).
I Configured an ASM instance and a disk group with two disk for normal redundancy.
> Here .. each disk is 2gb
The disk group has two disks...
SQL> select group_number, name, type, total_mb, free_mb 2 from v$asm_diskgroup;
GROUP_NUMBER NAME TYPE TOTAL_MB FREE_MB ------------ ------------------------------ ------ ---------- ---------- 1 DATA NORMAL 4000 3898
as the group has two way mirroring (Normal redundancy) How much data (2 GB or 4 GB) can i keep in the disk group? My conception is I can keep 2 GB data in the disk group... (as the disk group keeps every extent in another disk as mirror)
i have created a new tablespace and assigned it to new user. What are the minimum no. of grants i should give, so that the user can made any kind of changes to all the objects within the tablespace and cant access other tablespace.
We have a Production Oracle 10g R2 RAC on HP-UX v2 IA64 servers.We have Two Disk Groups one for Archive (ARC_DISK - 100 GB) and other for Database(DATA_DISK - 1 TB]. We wanted to add more space to the DATA_DISK disk group.Unix admin configured 200 GB from SAN and changed the ownership of the Disk to oracle and permissions to 775 on 1st Node.I opended DBCA from 1st Node and was able to see the disk in 'Show Candidate'.
I added this disk to the DATA_DISK disk group and clicked OK but got ORA- error with some message like some operations could not be performed. I exited DBCA.We realized that we had forgotten to change the ownerhip and permission from the 2nd Node.Unix admin changed the ownership of the Disk to oracle and permissions to 775 on the 2nd Node.
I opened DBCA again from 1st Node and selected the DATA_DISK disk group but could not find the Disk in 'Show Candiate' open. I clicked on 'Show All' and this disk was shown with Header_Status - MEMBER but not allocated to DATA_DISKGROUP. When I clicked the 'Show Member' option, this disk is not shown for DATA_DISK disk group. I exited DBCA at this point.As this is a critcal Production database I didnt proceed any further and exited DBCA.
Now I need to add this Disk to the DATA_DISK disk group but not sure which option to select. I got one reply from another forum to run DBCA select the DATA_DISK Disk Group and then click 'Show All' and select this Disk (which already has MEMBER as Header Status) and select Force Option and click OK to continue.
I am attempting to perform a TSPITR on a newly created tablespace. The error indicates that the tablespace is not in the recovery catalog in which case it is. The database is Oracle 11g on Win2k8 64bit enterprise edition.
List of Datafiles in backup set 52 File LV Type Ckp SCN Ckp Time Name ---- -- ---- ---------- --------- ---- 1 Full 3959509 06-MAR-11 +DATA/orcl/datafile/system.257.742678049 2 Full 3959509 06-MAR-11 +DATA/orcl/datafile/sysaux.258.742678049
SQL> drop user custom cascade; drop user custom cascade * ERROR at line 1: ORA-00604: error occurred at recursive SQL level 1 ORA-21700: object does not exist or is marked for delete
How can I drop a lower case tablespace name from my DB?
SQL> select * from v$version; BANNER ------------------------------------------------------------ Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production PL/SQL Release 11.1.0.7.0 - Production CORE 11.1.0.7.0 Production TNS for IBM/AIX RISC System/6000: Version 11.1.0.7.0 - Production NLSRTL Version 11.1.0.7.0 - Production [code]....
How to configure Oracle EM with newly created Oracle Instance on Oracle 10g DB,which is Single Instance DB but not RAC ,when I start the Oracle EM it is starting the default DB which created during Oracle Server Installation.
I've ran: DROP TABLESPACE x_tbs INCLUDING CONTENTS;
I've read(should have read it prior to action) [URL]tm
and I understand now that I should have stated "AND DATAFILES", However, too late now. the tablespace is removed, but the datafile x_tbs is still present in a folder of my OS.
Is it safe to manually remove it by deleting it from the operating system?
ON windows environment...i am trying to delete the asm disk recently created with asmtool but it is not allowing me to do that . it seems asmtool gives some system assigned name to it . How to find the name so that i can drop the disk.
1. asmtool -create e:asmasm2.dsk 1024M;
2. asmtool -delete e:asma2.dsk ASM:00204 : Ignoring ORACLDISKE:E:ASMASM2.DSK not a valid ASM paritition
I checked and found we have disk that is assigned with 0 disk GROUP_NUMBER. What does that mean ? how to check if disk T1_ASM05 is been part of any disk group or not.?
SQL> select GROUP_NUMBER,NAME from v$asm_diskgroup;
GROUP_NUMBER NAME ------------ ------------------------------ 1 DATA 2 FRA SQL> SQL> select GROUP_NUMBER,name,PATH from v$asm_disk;
What is best practice to change small disk D:? I am beginner with Oracle. 10g on W2008. 5 datafiles (all indexes,second data file, 2 undotabs)*.dbf (34;30;1;34;12 GB) is on D:. Part of tablespaces (1 data, 1 undo)has files on c:.
I. 1.Shutdown 2008 server. 2.Copy D: image with GHOST to USB, network. 3.Connect new D, create RAID. 4.Restore image to D. 5.Start 2008 server.
II. 1.Stop application. 2.CONNECT AS SYSDBA 3.SHUTDOWN NORMAL or (IMMEDIATE)? 4.Copy files *.dbf at OS level from d: to ... USB disk, network. 5.Shutdown 2008 server. 6.Change disks, create RAID in BIOS. 7.Start W2008. Is Oracle at this moment in SHUTDOWN mode? 8.Copy back *.dbf to new D: (with directory structure). 9.STARTUP Oracle.
What should be our approach when we see the disk response time is bad for a particular tablespace in database.I heard a good disk response time should be on an average 10ms.
According to my understanding , if Disk1 Fails Disk4 facilitates normal operations. When there is space crunch it operates in reduced redundancy . Am i right ?
2.I have got 4 Disks in one group (i.e from Disk1 To Disk4 ) i have not defined any failure group and as per my understanding all disks will be added to its own failure group without mirroring and striping.
essentially create data fragmentation within the datafile resulting in the db having lots more space to write into but not actually freeing space, even if you shrink the file it doesnt free space or do a reorg?
We have as an example a DB with 2 billion rows of data in 1 table, no partioning just one large table.
We have worked out that we can probably delete 1 billion rows or even better only keep a rolling 3 month window of data.
What would be the suggestion on deleting this data and reclaiming the disk space to actually see additional disk space made available at the os level.
deleting the data and reclaiming the space.
Through reading it looks like it might be something like, delete, creating new table space partitions from this data. This in theory would create new a tablespace in newly created data files which would result in the data being reorganised and taking up less physical space and when completed you point to the newly created partitions and drop the old tables.
Whenever I create a table using login A, the table gets created successfully. But when I query the dba_objects, the object owner is different, login B. What might be the reason behind this?
I have 2 servers both having windows server 2008 64 bit as operating system installed on both I need to install oracle clusterware 11g r1 on both servers with clustering on external storage. I have configured the network(private,public and virtual) for both servers and have started the installation.
In the installation of oracle I add both servers but then I reach to a point where they ask me for voting disk or ocr disk in the cluster configuration storage but no disk is present how can i create ocr disk or voting disk on windows server 2008? And the external storage should I buy a special type of storage that supports clustering to continue my work?
I have a small problem resizing an ASM disk group . I've had a lun with size 50G and added on it an asm disk called LUN1D1. Then I have created a DISK GROUP called data1 (external) witch contain LUN1D1. DATA1 was then made asm volume. So I have an asm volume with size 50G and I need it to be 100G.
Now I have increased the size of the lun with 50G (100G in total). I have rescanned the LUN and os see the new size. The problem is I can not re size DISK GROUP data1 or disk LUN1D1.
c:> sqlplus Enter user-name: sys as sysdba Enter password:
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select name,ts# from v$tablespace; NAME TS# ------------------------------ ---------- SYSTEM 0 SYSAUX 1 UNDOTBS1 2 USERS 4 TEMP 3
[code].....
why can't it create re-create the datafile even i dropped tablespace with its content and its datafiles?
My understanding of DB_FILE_MULTIBLOCK_READ_COUNT parameter is that it affects only Full Table Scans and Fast Full Index Scans - all other disk retrieval is single block.If so, then maybe I'm reading this trace incorrectly:
select /*+ first_rows */ pk from test_join_tgt where pk >= 0 and rownum > 1
