Saving OCR for Non-RAC ASM

Similar Questions

• Logs archiving for the RAC ASM basics

  Hello
  
  I have a question about logs archiving on the ASM database located on a RAC. I created a database orcl who has orcl1 instance on node1 and orcl2 on Node2. For the backup of this database, I enabled for the database to archivelog.
  
  After a few transactions and backups, I noticed that there are two sets of archiving logs created on each node in the folder $ORACLE_HOME/dbs. In node 1, it starts with arch1_ * and node2 is arch2_ *.
  
  IWhy is it creates logs archiving on local disks, in which she should ideally create disks asm which is shared between the nodes. My backup application fails with journal archive not found error, because it searches newspaper archives in the other node.
  
  All entries on this will be useful.
  
  Amith

  Hello

  I have a question about logs archiving on the ASM database located on a RAC. I created a database orcl who has orcl1 instance on node1 and orcl2 on Node2. For the backup of this database, I enabled for the database to archivelog.

  After a few transactions and backups, I noticed that there are two sets of archiving logs created on each node in the folder $ORACLE_HOME/dbs. In node 1, it starts with arch1_ * and node2 is arch2_ *.

  I believe that it is missing from your configuration database and Oracle uses the default location. (i.e. your "$ORACLE_HOME/dbs")

  ARCHIVELOG must focus on a shared domain.

  You need the parameter config below:

  SQL> show parameter db_recovery_file
  NAME                                 TYPE        VALUE
  ------------------------------------ ----------- ------------------------------
  db_recovery_file_dest                string
  db_recovery_file_dest_size           big integer 
  

  Or location of default config:

  SQL> show parameter log_archive_dest
  
  NAME                                 TYPE        VALUE
  ------------------------------------ ----------- ------------------------------
  log_archive_dest                     string
  

  IWhy is it creates logs archiving on local disks, in which she should ideally create disks asm which is shared between the nodes. My backup application fails with journal archive not found error, because it searches newspaper archives in the other node.

  To resolve this problem see this example:

  SQL> show parameter recover
  
  NAME                                 TYPE        VALUE
  ------------------------------------ ----------- ------------------------------
  db_recovery_file_dest                string
  db_recovery_file_dest_size           big integer 1
  
  SQL> archive log list;
  Database log mode              Archive Mode
  Automatic archival             Enabled
  Archive destination            /u01/app/oracle/product/10.2.0/db_1/dbs/
  Oldest online log sequence     2
  Next log sequence to archive   3
  Current log sequence           3
  SQL>
  
  SQL> alter system set db_recovery_file_dest_size=20G scope=both sid='*';
  
  System altered.
  
  SQL> alter system set db_recovery_file_dest='+FRA' scope=both sid='*';
  
  System altered.
  
  SQL> archive log list;
  Database log mode              Archive Mode
  Automatic archival             Enabled
  Archive destination            USE_DB_RECOVERY_FILE_DEST
  Oldest online log sequence     5
  Next log sequence to archive   6
  Current log sequence           6
  SQL>
  

  With RMAN

  RMAN> CONFIGURE CHANNEL 1 DEVICE TYPE DISK CONNECT 'sys/oracle@db10g1';
  
  new RMAN configuration parameters:
  CONFIGURE CHANNEL 1 DEVICE TYPE DISK CONNECT '*';
  new RMAN configuration parameters are successfully stored
  starting full resync of recovery catalog
  full resync complete
  
  RMAN>  CONFIGURE CHANNEL 2  DEVICE TYPE DISK CONNECT  'sys/oracle@db10g2';
  
  new RMAN configuration parameters:
  CONFIGURE CHANNEL 2 DEVICE TYPE DISK CONNECT '*';
  new RMAN configuration parameters are successfully stored
  starting full resync of recovery catalog
  full resync complete
  
  RMAN> list archivelog all;
  
  using target database control file instead of recovery catalog
  
  List of Archived Log Copies
  Key     Thrd Seq     S Low Time  Name
  ------- ---- ------- - --------- ----
  1       1    3       A 28-FEB-11 /u01/app/oracle/product/10.2.0/db_1/dbs/arch1_3_744216789.dbf
  2       2    2       A 27-FEB-11 /u01/app/oracle/product/10.2.0/db_1/dbs/arch2_2_744216789.dbf
  
  RMAN> crosscheck archivelog all;
  
  allocated channel: ORA_DISK_1
  channel ORA_DISK_1: sid=127 instance=db10g1 devtype=DISK
  allocated channel: ORA_DISK_2
  channel ORA_DISK_2: sid=135 instance=db10g2 devtype=DISK
  validation succeeded for archived log
  archive log filename=/u01/app/oracle/product/10.2.0/db_1/dbs/arch1_3_744216789.dbf recid=1 stamp=744292116
  Crosschecked 1 objects
  
  validation succeeded for archived log
  archive log filename=/u01/app/oracle/product/10.2.0/db_1/dbs/arch2_2_744216789.dbf recid=2 stamp=743939327
  Crosschecked 1 objects
  
  RMAN> backup archivelog all delete input;
  
  Starting backup at 28-FEB-11
  current log archived
  using channel ORA_DISK_1
  using channel ORA_DISK_2
  channel ORA_DISK_1: starting archive log backupset
  channel ORA_DISK_1: specifying archive log(s) in backup set
  input archive log thread=1 sequence=3 recid=1 stamp=744292116
  channel ORA_DISK_1: starting piece 1 at 28-FEB-11
  channel ORA_DISK_2: starting archive log backupset
  channel ORA_DISK_2: specifying archive log(s) in backup set
  input archive log thread=2 sequence=2 recid=2 stamp=743939327
  channel ORA_DISK_2: starting piece 1 at 24-FEB-11
  channel ORA_DISK_1: finished piece 1 at 28-FEB-11
  piece handle=+FRA/db10g/backupset/2011_02_28/annnf0_tag20110228t120354_0.265.744293037 tag=TAG20110228T120354 comment=NONE
  channel ORA_DISK_1: backup set complete, elapsed time: 00:00:02
  channel ORA_DISK_1: deleting archive log(s)
  archive log filename=/u01/app/oracle/product/10.2.0/db_1/dbs/arch1_3_744216789.dbf recid=1 stamp=744292116
  channel ORA_DISK_2: finished piece 1 at 24-FEB-11
  piece handle=+FRA/db10g/backupset/2011_02_24/annnf0_tag20110228t120354_0.266.743940249 tag=TAG20110228T120354 comment=NONE
  channel ORA_DISK_2: backup set complete, elapsed time: 00:00:03
  channel ORA_DISK_2: deleting archive log(s)
  archive log filename=/u01/app/oracle/product/10.2.0/db_1/dbs/arch2_2_744216789.dbf recid=2 stamp=743939327
  channel ORA_DISK_1: starting archive log backupset
  channel ORA_DISK_1: specifying archive log(s) in backup set
  input archive log thread=1 sequence=4 recid=4 stamp=744293023
  input archive log thread=2 sequence=3 recid=3 stamp=743940232
  channel ORA_DISK_1: starting piece 1 at 28-FEB-11
  channel ORA_DISK_1: finished piece 1 at 28-FEB-11
  piece handle=+FRA/db10g/backupset/2011_02_28/annnf0_tag20110228t120354_0.267.744293039 tag=TAG20110228T120354 comment=NONE
  channel ORA_DISK_1: backup set complete, elapsed time: 00:00:02
  channel ORA_DISK_1: deleting archive log(s)
  archive log filename=+FRA/db10g/archivelog/2011_02_28/thread_1_seq_4.264.744293023 recid=4 stamp=744293023
  archive log filename=+FRA/db10g/archivelog/2011_02_24/thread_2_seq_3.263.743940231 recid=3 stamp=743940232
  Finished backup at 28-FEB-11
  
  Starting Control File and SPFILE Autobackup at 28-FEB-11
  piece handle=+FRA/db10g/autobackup/2011_02_28/s_744293039.263.744293039 comment=NONE
  Finished Control File and SPFILE Autobackup at 28-FEB-11
  
  SQL> alter system archive log current;
  
  System altered.
  
  RMAN> list archivelog all;
  
  using target database control file instead of recovery catalog
  
  List of Archived Log Copies
  Key     Thrd Seq     S Low Time  Name
  ------- ---- ------- - --------- ----
  5       1    5       A 28-FEB-11 +FRA/db10g/archivelog/2011_02_28/thread_1_seq_5.264.744293089
  6       2    4       A 24-FEB-11 +FRA/db10g/archivelog/2011_02_24/thread_2_seq_4.268.743940307
  
  RMAN> CONFIGURE CHANNEL 1 DEVICE TYPE DISK CLEAR;
  
  old RMAN configuration parameters:
  CONFIGURE CHANNEL 1 DEVICE TYPE DISK CONNECT '*';
  old RMAN configuration parameters are successfully deleted
  
  RMAN> CONFIGURE CHANNEL 2 DEVICE TYPE DISK CLEAR;
  
  old RMAN configuration parameters:
  CONFIGURE CHANNEL 2 DEVICE TYPE DISK CONNECT '*';
  old RMAN configuration parameters are successfully deleted
  
  RMAN> exit
  
  Recovery Manager complete.
  

  Kind regards
  Levi Pereira

  Published by: Levi Pereira on February 28, 2011 12:16

• XMP allows saving etc. for non-digital images shutter speed?

  Hello

  I'm trying to convert a database built by hand from photos to xmp, so I can move into the 21st century. I still use film, and for each image, I write the shutter speed, the f-stop, the hour and the date of exposure, etc.. Is there a standard way to write an xmp file to associate my TIFF scanned so that this information is available in other applications that support xmp and Lightroom? Maybe someone has created a custom xmp Panel file that is a de facto standard?

  Thanks for the pointers you can give me.

  A

  First of all, LR won't create or read the file separated for TIFF images. TIFF is an open format, non-owner, so the xmp data can be written directly to the file. Any other application of professional quality will be able to read it.

  Then, for scanned images, there is no commom, metadata fields specially dedicated for each adjustment of the device. To get technical information such as this, IPTC docments indicate that the 'Instructions' field is the appropriate place for such note.

  If you have a separate log of your data, there is a plugin LR who reads a CSV version, and then map it to the desired in LR metadata fields. I used this method with a high degree of success these past years in the analysis of several of my old negatives. I had a spreadsheet that has documented many aspects of the analysis. When I was ready to commit it all to LR, I prepared the data worksheet as needed, he converted to the CSV format and then imported in the fields in LR. It took a lot of time to install and test but the final result has worked very well for scans of a thousand or so that I had. Check out the plugin LR/carrier here.

  I hope this helps...

• Create an instance of 10gr 2 Non-RAC ASM in Solaris 10 (x 86)

  DB version: 10 gr 2
  Operating system: Solaris 5.10 for x 86 (Installation DVD) released in June 2006
  
  I decided to remove the installation of windows in my old laptop. I will install only Solaris 10 (x 86) in the present to create an ASM instance.
  My laptop has a single hard drive to IDE. Is it possible to create ASM slices on it?

  Yes, this is possible and you won't have to fake any device, just book a slice for the DSO. And I also advise to use a more recent version of solaris. 06/06 is quite old.

  Bjoern

• EBS 11i no RAC ASM

  Hello
  
  I wonder is it possible run EBS 11i database of ASM with environment Non-rac.
  
  Thank you.
  
  Published by: ecer on July 28, 2012 09:30

  Salvation;

  I wonder is it possible run EBS 11i database of ASM with environment Non-rac.

  Why not :) What is the version of db? You can also use ASM on stand-alone server. For details pelase see what Hussein posted snoussi.

  PS: Please don't forget to change the status thread answer whether it is possible when believe you your thread replied, he pretend to wasting time in other forums users while they are looking outstanding which is not answered, thank you for understanding

  Respect of
  HELIOS

• Installation of the disk and OCR files voting in ASM

  I am preparing to install clusterware GR 11, 2 and ASM on a pSeries IBM AIX 5.3 running node cluster. My question about placing the files OCR and Vote in ASM disk is what disk group ASM is used? Should I put them in the Group of database files, control files, etc.? Or should I place them in the Group of disks for the log files and the recovery area? Or is it not important?
  
  I've referenced the Network Infrastructure Setup Guide, but I'm still confused. Any advise will be greatly appreciated. Thank you.
  
  Published by: CowTown_dba on October 5, 2011 15:27

  CowTown_dba wrote:
  I am preparing to install clusterware GR 11, 2 and ASM on a pSeries IBM AIX 5.3 running node cluster. My question about placing the files OCR and Vote in ASM disk is what disk group ASM is used? Should I put them in the Group of database files, control files, etc.? Or should I place them in the Group of disks for the log files and the recovery area? Or is it not important?

  I've referenced the Network Infrastructure Setup Guide, but I'm still confused. Any advise will be greatly appreciated. Thank you.

  Hello
  Management should use a Diskgroup separated for OCR and Vote. I have the habit of creating a Diskgroup using normal redundancy (3 LUN) to files Clusterware.
  Currently starts is used for different purposes (FRA, ACFS, Clusterware files, database files, etc.) is highly recommended to use a diskgroup for each use. It will make a big difference when you do maintenance on start (like add/remove the disks/diskgroup, duplication, etc.)
  Oracle RAC FAQ:
  Best practices for ASM must have 2 starts. Best practices for OCR to ASM are to have a copy of the OCR in each diskgroup.

  Kind regards
  Levi Pereira

• Add a new instance to the NON-RAC database?

  I could create a new instance to the non-rac database?
  
  I tried to use dbca to create the second instance, but I read, help, that is not possible.
  
  There is no way to create the second instance in a single database? (No. - CARS, no. - ASM, just a normal database)
  
  Thanks in advance.

  Instance = process and memory
  Basis of data = all data files.

  For a database no CARS, there is a one-to-one mapping between the instance and database.

  If you don't want to use an existing database to store the new patterns, you need to create a new database.

• How can I add data file to an existing table on Oracle RAC ASM with no OMF? Thank you!

  How can I add data file to an existing table on Oracle RAC ASM with no OMF? Thank you!

  Hello

  So I guess you have some files in ASM, see your first existing file structure

  Select file_name

  from dba_data_files;

  and to add to an existing table, the example below (even if you're better sticking with OMFs!)-is that what you are looking for?

  SQL > create tablespace TEST1

  2 datafile '+ DATA' size 1 M;

  Created tablespace.

  SQL > select file_name in dba_data_files;

  FILE_NAME

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

  +Data/orcl2/datafile/users.259.859820983

  +Data/orcl2/datafile/undotbs1.258.859820983

  +Data/orcl2/datafile/SYSAUX.257.859820983

  +Data/orcl2/datafile/system.256.859820981

  +Data/orcl2/datafile/example.269.859821049

  +Data/orcl2/datafile/Test1.271.859843053

  6 selected lines.

  SQL > alter tablespace TEST1

  2 Add datafile ' + DATA / mynewfile01.dbf ' size 2 m;

  Tablespace altered.

  SQL > select file_name in dba_data_files;

  FILE_NAME

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

  +Data/orcl2/datafile/users.259.859820983

  +Data/orcl2/datafile/undotbs1.258.859820983

  +Data/orcl2/datafile/SYSAUX.257.859820983

  +Data/orcl2/datafile/system.256.859820981

  +Data/orcl2/datafile/example.269.859821049

  +Data/orcl2/datafile/Test1.271.859843053

  + DATA / mynewfile01.dbf

  Thank you

• Installation step by step 12.2 RAC ASM on Oracle Enterprise Linux5 64-bit EBS

  Hi all

  Hope you are all very well...

  Could you please help me because I am looking for a document (installation step by step 12.2 RAC ASM on Oracle Enterprise Linux5 64-bit EBS)... as I already searched and found a lot of documents, but all are more detailed, and others are for the installation of single node...

  What I need is to set up 12.2 RAC ASM environment on two 2 knots... So, could you please help me.

  Your support will be much appreciated...

  Kind regards

  Mohammed

  Hi Mohammed,.

  1. Yes, you could. You can also see "Section 3: install the software from the Oracle 11 g 2 Cluster" (Doc ID 1453213.1)

  2 oracle eBusiness Suite Installation and upgrade to version 12 (12.2) Notes for Linux x 86-64 (Doc ID 1330701.1)

  For the installation of CRS, please visit http://www.oracle.com/pls/db112/portal.portal_db?selected=16&frame=#oracle_clusterware

  Thank you

  Hussein

• 12.1.3 database of single node 11.2.0.3 to node 2 RAC ASM EBS

  Hello

  We intend to convert database of system 11.2.0.3 of ordinary/local file of the single node to node 2 RAC ASM.

  Please help me in the creation of the roadmap for the same thing.

  for example

  1. create a raw file-sharing system

  2. create for ASM diskgroup

  3 convert the local file system to the first ASM

  etc, etc.

  It's the first big task so need to expert advice.

  Please refer to:

  The use of Oracle 11 g Release 2 Real Application Clusters with Oracle E-Business Suite Release 12 (Doc ID 823587.1)

  Oracle E - Business Suite Release 12 high availability Documentation Roadmap (Doc ID 1072636.1)

  Thank you

  Hussein

• RMAN cloning of the CARS to the Non-RAC

  Hi gurus,

  I had cloned successfully my DB of RAC to Non-RAC via the RMAN. Below is the configuration

  RAC

  -2 nodes

  -GR 11, 2 (Compatible 11.0.1.6 according to the needs of the Application)

  -ASM (2 starts DATA and FRA)

  -OS RHEL 6.3

  Non - RAC

  -node 1

  -Stand alone11gR2 (Compatible 11.0.1.6 according to the needs of the Application)

  -ASM (2 starts DATA and FRA)

  -OS RHEL 6.3

  My approach was to clone DB and then change SID with utility nest. My understanding is that utility nest will also replace file ASM paths of CRAMPRD to CRAMSIT, but that has not happened.

  So question is when I'm checking my paths on CRAMSIT he still refelect CRAMPRD eg - + DATA1/CRAMPRD. Is it possible to rename this directory in ASM railways so that it should reflect my SID.

  Kind regards

  Nikhil Mehta.

  No, NEST would change the paths of the DSO.

  I assume that you have set the ORACLE_SID CRAMSIT on the server not CARS before the restoration.

  What you should have done is to put DB_UNIQUE_NAME = "CRAMSIT" (even with DB_NAME = "CRAMPRD") on the server not CARS before the restoration.  Oracle would have used the DB_UNIQUE_NAME to set the path of the ASM (note that when restoring, it would have shown ' restoration to + DATA1/CRAMPRD "but would have been catering to '+ DATA1/CRAMSIT').

  You can now use Oracle Support Note

  How to rename/move a data file in the same [564993.1 ID] ASM diskgroup

  to rename the paths to the DSO.

  Hemant K Collette

• Oracle 11 g 2 11.2.0.3 Server install RAC (ASM) redhat linux 6 asmlib?

  I installed Oracle RAC (asm) on Red Hat Linux 4 and 5 without problems by using NFS and creating shared files and presented them to the DSO as devices without any problem.
  
  Now I meet with Oracle 11 g 2 ASM installation on Red Hat Linux 6.1 and the installation documentation is inaccuracies on how I can use shared NFS this empty asm files so that I can properly install the DSO. I understand that Oracle does not provide ASMLib for raw devices for Red Hat linux 6 going forward.
  
  I understand that asmlib must not be supported on Red Hat Linux 6 forward however I would appreciate information in support of the DSO on Red Hat Linux 6 using NFS share and create empty files with jj. This worked on Linux 5 and I'll try to find a solution.
  
  / sbin/scsi_id is used so that I understand. EXM/sbin/scsi_id-g u d < device empty file or dd >
  
  Trust setting of SCSI devices by adding the entry of /etc/scsi_id.config
  
  Rules UDEV advice would be appreciated.
  
  Since I use empty files to the server for ASM, using partprobe < path of the empty file? >?
  
  
  Thank you

  Hello

  If it comes to cluvfy in the program installation you indicating that your devices are not shared, contempt which (if you personally know that they are shared).
  This seems to be an annoying error with cluvfy, the shared disk check only works in specific circumstances...

  To be honest, I never saw him work properly, so I'm testing the devices 'sharedness' always myself (dd in on a node, dd on the other to see the results expected).

  If the error happens however at a date later (root.sh), then the devices are really not shared, or you have a permissions problem.

  Concerning

  Sebastian

• Cloning of Oracle EBS - RAC to the Non-RAC on windows 2008

  Please note that my Client is running Oracle eBusiness suit R12.1.1 + 11.2.0.2 on Windows
  
  Server 2008R2 on RAC + ASM.
  
  I was asked to perform the Clonning of Production Test of RAC environment at no
  
  RAC?
  
  I went through the id of note certified RAC scenarios for the E-Business Suite cloning [783188.1 ID] which
  
  says that Oracle E-Business suit R12.1.1 is not supported for RAC RAC or RAC to no RAC Clonning?
  
  Please tell us if the Clonning is possible to environment CARS not RAC on Windows 2008 R2 for
  
  R12.1.1 + 11.2.0.2?
  
  What is the possible risk if I go ahead with the same Oracle unsupported environment?

  Auxiliary R12 with RMAN db clone.

• 11.2.0.3 Pri RAC ASM with failover standby Post normal FileSys Active

  The architecture consists of two node rac asm primary and a normal file system active standby on Oracle 11 g 2 11.2.0.3. With the Basic Configuration of broker.
  
  Made a move to the managed broker and not the file system Normal has the main role and the eve consists of two node rac asm. I want to switchback, i.e., former principal-> former role primary and Standby-> role of Eve.
  
  However, my broker contains the following:
  DGMGRL > show configuration detailed;
  
  Configuration - DG_PRI_CFG
  
  Protection mode: MaxPerformance
  Databases:
  EVE - primary database
  WARNING: ORA-16829: accelerated failover configuration is trolling
  
  KEMETRAC - (*) Physical standby database
  Error: ORA-16810: multiple errors or warnings found for the database
  
  (*) Fast failover target
  
  Properties:
  FastStartFailoverThreshold = "95"
  OperationTimeout = "30"
  FastStartFailoverLagLimit = "95"
  CommunicationTimeout = "180"
  FastStartFailoverAutoReinstate = 'TRUE '.
  FastStartFailoverPmyShutdown = 'TRUE '.
  BystandersFollowRoleChange = "ALL".
  
  Fast-Start Failover: ENABLED
  
  Threshold: 95 seconds
  Target: KEMETRAC
  Observer: emcc.respecti.com
  Offset limit: 95 seconds
  Primary closure: TRUE
  Auto-Rétablir: TRUE
  
  The configuration status:
  ERROR
  
  
  
  I found a recommendation to increase the value of FastStartFailoverThreshold = '90';
  Although I still meet the above configuration error.
  
  Recommendations are appreciated!
  
  Published by: 783527 on March 12, 2012 19:41

  Hello

  According to the guidelines of your output, you can see log files waiting for new primary forward, but you haven't posted from sleep mode if you have set up the standby redo log files or not?
  This problem occurs only if there is an incorrect configuration , reconfigure then again by abandonment & recreating.

  Sleep mode: -.

  SQL > select group #, sequence #, bytes/1024/1024, used condition, stored in v$ standby_log;
  SQL > select group #, thread #, sequence #, bytes/1024/1024, archived, the journal of v status $;

  Check out these links
  http://docs.Oracle.com/CD/E11882_01/server.112/e17022/log_transport.htm#BABCBEGJ
  http://www.Pythian.com/news/581/Oracle-standby-redo-logs/

• Need advice from configuration to the flash cache multi-node RAC/ASM

  We have a database of CARS to work two nodes. We install a new fusion 640 GB flash card in each node. The is a double card, so that it shows up as two devices: / dev/fioa and/dev/fiob on each node.
  We have created two groups of private drives, one on each node. The Group of disks on node 1 is '+ FLASHCACHE' and the disk on node 2 group is "+ FLASHCACHE2".
  
  We have not found specific examples of how to configure the parameters of the init for flashcache on RAC/ASM. We guess that we must do the following. If anyone would be critical and confirm or suggest something different, we would appreciate it very much!
  
  "prod1.db_flash_cache_file ='+ FLASHCACHE/flash1"
  prod2.dg_flash_cache_file = '+ FLASHCACHE2/flash2'
  * .db_flash_cache_size = 600G
  
  Thanks for any advice.
  
  Jim
  
  Published by: jimbev90 on January 5, 2012 08:18

  Hi Jim,.

  prod1.db_flash_cache_file='+FLASHCACHE/flash1'
  prod2.dg_flash_cache_file='+FLASHCACHE2/flash2'
  *.db_flash_cache_size=600G
  

  Your configuration is correct.

  Smart Flash Cache database is not shared across RAC nodes. It is private to each RAC instance. For this reason, each RAC instance must define its own local cache of flash file path. When the flash cache is managed by ASM, a separate diskgroup is necessary for each instance flash cache.

  You can use ALTER SYSTEM for db_flash_cache_size set to zero to disable the flash cache. Alternatively, you can use ALTER SYSTEM to deliver the flash cache to its original size to reactivate it.

  Read this white paper Oracle database Smart Cache Flash
  http://www.Oracle.com/technetwork/articles/systems-hardware-architecture/Oracle-DB-smart-Flash-cache-175588.PDF

  Kind regards
  Levi Pereira