ALTER database begin backup question

Where can I check in the data dictionary to check whether a database is in backup mode? I thought this would be the database of v$, but when I check the docs, I see not listed.

http://docs.Oracle.com/CD/B13789_01/server.101/b10755/dynviews_1054.htm

Guess2 wrote:
Where can I check in the data dictionary to check whether a database is in backup mode? I thought this would be the database of v$, but when I check the docs, I see not listed.

http://docs.Oracle.com/CD/B13789_01/server.101/b10755/dynviews_1054.htm

Why are you still using the managed user backups?

Tags: Database

Similar Questions

ALTER TABLESPACE BEGIN BACKUP MODE
Hi all
When we issue alter tablespace begin backup command then freezes the data file headers and all modified blocks will be written to streams and when we issue end backup command then the database will write the blocks changed to data files by accessing files redo.
my doubt is suppose archiver process archive redo files and all redo files are overwritten. now how the database will write the changed blocks to restore and database dealing with this task.

TIA
"Hot backup" is obsolete with 10g or more recent technology as Rman covers this much better.
Please switch to RMAN at your early convenience.

Also, as the database must be in archivelog backup online, it is not a problem, that the online redo log files are overwritten, like recovery will use two online redolog files and archived.
Your question doesn't make sense to me.
Redo are written in files LGWR, ARCH Archive files. Changes are written to the database by DBWR. All who are independent processes, and the changes are written to redo front to be written to the database.

----------
Sybrand Bakker
Senior Oracle DBA

What do I need to use the database shall begin backup mode to perform the backup?

Hi all
I have a primary database to 10g (10.2.0.4) with intelligence on a solaris platform. I need to create a different primary eve for the same database.
I stopped the recovery based on standby and began copy (copy of the os) the existing files pending at the 2nd backup server. But I didn't keep the (mounted) existing standby database into begin backup mode. Is this right?
Thank you
Arun

For a mounted database backup mode?

orclz >

orclz > startup mount

ORACLE instance started.

Total System Global Area 788529152 bytes

Bytes of size 3050600 fixed

373293976 variable size bytes

406847488 of database buffers bytes

Redo buffers 5337088 bytes

Mounted database.

orclz >

orclz > alter database begin backup;

ALTER database begin backup

*

ERROR on line 1:

ORA-01109: database is not open

orclz >

What happens when the database in backup Mode?
Hello

What happens when we kept the database in backup mode, by using the command "Alter database Begin Backup" means;

Thank you...
ASIT
OK, now my query is whether Oracle freeze the data file header and information is stored in the log file of restoration by progression. So if my backup job continues for 30 min and at the same time someone did some update of database, then how these updates to the information written back to the data file after "Alter Database End Backup'.»

Oracle only blocks data file headers, no body. Modified blocks will be stored in data files (at control points) even in backup mode.
If checkpoint has not arrived yet after this update and validation, and DB has decreased, then when it will start it will redo-log automated recovery.

Published by: user11181920 on Sep 21, 2012 11:54

database in backup mode
Hi guys,.

If I put my database in backup mode and perform the backup (hotbackup / online) of the database.

When I need to do the restore, can I archive logs at all? (not necessary to recover to point in time) Can I restore data files and do an alter database open resetlogs?

The database will be inconsistent and cannot start without applying archive logs at all? as the data is not stopping when you perform the backup.

Thank you
You have to do it all again (i.e. the ArchiveLogs):
FROM: The time where the ALTER DATABASE BEGIN BACKUP (or the first ALTER TABLESPACE BEGIN BACKUP)
To: The first ArchiveLog after BACKUP END EDIT (or the last BACKUP END of ALTER TABLESPACE)
Therefore, you should always make ALTER SYSTEM ARCHIVE LOG CURRENT at the end of the backup mode and capture this archivelog in your backup.

The database will be inconsistent (and DOES not) until and unless you apply the redo (archived).

Hemant K Collette

ORA-1113 marked during: alter database open
Help, please!

While in retrospect was backing one of the index file of the database on our server, I started accidentally services and the Oracle database. When trying to connect to SQL, the following error message occurs:

ORA-01033: Oracle initialization or shutting.

I opened the alert log database and the following error message was published at the time, that I started to the Oracle database.

ORA-1113 marked during: alter database open

Is the version of Oracle 8i and the operating system is Windows NT 4.0.

If anyone knows how to fix this problem without having to perform a database recovery, I would appreciate your help.

Thank you in advance.
ORa-1113 error means that your application of backup ("retrospective") an ALTER TABLESPACE BEGIN BACKUP and END for each tablespace.

In 8i, you wouldn't have the command "ALTER DATABASE END BACKUP". Neither the "ALTER DATABASE DATAFILE... BACKUP COPY OF THE END. "

What you would do is:
1. start the service.
2. go to the quick Windows command line as administrator or the account of the OS_DBA Group (with the right ORACLE_SID, ORACLE_HOME and path)
3 sqlplus / as sysdba
4 start editing - or ALTER DATABASE MOUNT so it start but not mounted
5 ALTER TABLESPACE (tablespacename_that_was_in_backup_mode) BACKUP end;
(if there were spaces of multiple tablespaces in backup mode, issue the END BACKUP for each other)
6. ALTER DATABASE OPEN;

The other option in step 5 is the "RECOVER DATABASE". Oracle can ask any archivelogs to synchronize the files data back.

How to Setup Data Guard with alter tablespace... begin backup approach
Hello!

I am writing this compilation of documents in a guard daata establishing in 10g. I was in charge to present different approaches in implementing on Rhel 5.

I came across 3 procedures (which is to duplicate a database with RMAN, then configure it to a Data Guard feature). I read a process using (let's this is what the article said, but procedure was presented):

alter tablespace... .begin backup;
alter tablespace... .end backup;

then copy the generated files and configure it to the data protection feature.

Someone help it with that? Is there like a blogsite or steps I can take for this scenario?
Hello;

The best I found was: (and its same 10 Oracle! and not RMAN.)

http://sites.Google.com/site/catchdba/physical-standby-database-using-HOTBackup

There, an old link here on this topic:

DataGuard configuration using hot backup files

Hard to find much on this topic as "Hot Backup" almost always comes to RMAN.

This collection of notes can also help:

DataGuard knowledge browser Product Page [ID 267955.1]

And the "Formidable" Powerpoint:

www.dbspecialists.com/files/presentations/standbydb.ppt

Seems that this method is dead somewhere between Oracle 8 and Oracle 9

Best regards

mseberg

Published by: mseberg on March 16, 2012 20:31

Can not find the trace file after "alter database backup controlfile to trace;" on the RDBMS 11.2.0.3

Hello
I use a database on RDBMS 11.2.0.3. Connected as sys and run
SQL > alter database backup controlfile to trace;
Database altered.
view the USER_DUMP_DEST parameter.
VALUE OF TYPE NAME
------------------------------------ ----------- ------------------------------
user_dump_dest string D:\app\oracle\diag\rdbms\pears
dev\pearsdev\trace
Looking at the track record, there is no trace file? What am I missing?
Thank you
Mathias

Confirm with:

SQL > dir D:\APP\ORACLE\CONTROLFILE the host. TXT

Database ALTER DATABASE RECOVER using backup controlfile with AUTO option

Hello. I was recovering a database today and had a little blip.
I have published the following:
Database ALTER DATABASE RECOVER using backup controlfile
I then chose the AUTO option, allowing Oracle to select all available log files so that it would recover to the last log found in the destination of archive
However... has performed the following:
ORA-00289: suggestion:
/U03/Oracle/stk2proddata/archived_logs/arch1_242449_737547185.dbf
ORA-00280: change 30031145558 thread 1 is in sequence #242449
ORA-00278: log file
' / u03/oracle/stk2proddata/archived_logs/arch1_242448_737547185.dbf' is no longer
necessary for this recovery

ORA-00308: cannot open archived log
' / u03/oracle/stk2proddata/archived_logs/arch1_242449_737547185.dbf'
ORA-27037: unable to get file status
Linux-x86_64 error: 2: no such file or directory
Additional information: 3
Two messages above that I expected. However, I made then this:
SQL > alter database open resetlogs;
ALTER database open resetlogs
*
ERROR on line 1:
ORA-01113: file 1 needs media recovery
ORA-01110: data file 1: ' / u02/oracle/stk2proddata/system01.dbf'
This is not what I expected. What I've done wrong? Should I once received the message "cannot open archived log", launched to CANCEL?
I then recovered again, but used
SQL > restore database using backup controlfile until cancel;
ORA-00279: change 30031145558 generated at 30/04/2014 09:58:34 needed to
thread 1
ORA-00289: suggestion:
/U03/Oracle/stk2proddata/archived_logs/arch1_242449_737547185.dbf
ORA-00280: change 30031145558 thread 1 is in sequence #242449

Specify the log: {< RET > = suggested |} Filename | AUTO | CANCEL}
ORA-00279: change 30031157768 generated at 30/04/2014 10:06:07 needed to
thread 1
ORA-00289: suggestion:
/U03/Oracle/stk2proddata/archived_logs/arch1_242450_737547185.dbf
ORA-00280: change 30031157768 thread 1 is in sequence #242450
ORA-00278: log file
' / u03/oracle/stk2proddata/archived_logs/arch1_242449_737547185.dbf' is no longer
necessary for this recovery

Specify the log: {< RET > = suggested |} Filename | AUTO | CANCEL}
Cancel
Cancelled media recovery.
SQL > alter database open resetlogs;
Database altered.
No problem then here. Could someone please explain what I did wrong the first time and the second time right? Is this a problem with the car and using CANCEL?
Thank you!
DA
11.2.0.2
RHEL 5.5

Bug: 4178579

Bounce the database from backup
Hello

I use oracle10g with database pending. Here is the version of database.

Oracle Database 10 g Enterprise Edition release 10.2.0.3.0 - 64bi
PL/SQL version 10.2.0.3.0 - Production
CORE Production 10.2.0.3.0
AMT for Linux: release 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production

Now, I want to increase the number of processes in the primary database. Primary needs downtime. But in this case, do I bounce the day before?

Let me ask my questions here.

1 should I I bounce the day before to this scenario?

2 here are the commands and the sequence of steps to stop and start the database. Please correct me if I'm wrong...

2 (a) stop of the standby database first. (run this command at the secondary level)

Connect / as sysdba
SQL > ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;
SQL > shutdown immediate

2 (b) primary stop (run this command in the primary)

SQL > ALTER SYSTEM SET PROCESSES = 999 SOPE = spfile;
SQL > SHUTDOWN IMMEDIATE

2 c) primary startup

SQL > STARTUP

beginning 2d) the secondary database

Connect / as sysdba
startup nomount
ALTER DATABASE MOUNT STANDBY DATABASE;
ALTER DATABASE RECOVER MANAGED STANDBY BASE DISCONNECT FROM THE SESSION.

(3) after starting the database, how can I make sure, primary is on sale the archivelog in high school?

Any help is appreciated...
The backup database can be upward as you restart the primary database - which is not a problem.

Just compare V$ MANAGED_STANDBY standby with V$ log primary: sequence # process MRP with APPLYING_LOG status must be equal or close to the sequence # who is CURRENT in V$ LOG of primary.

You must also set the parameter to the eve with scope database = spfile. So after a failover or a passage, the setting is the same on your new primary database.

Kind regards
Uwe Hesse

http://uhesse.WordPress.com

How do I delete the database and backup of the ASM
Hi all

Oracle 11.2.0.3 database
OEL 5.7

We have a host for restore purposes.
Run us monthly or quarterly operations to verify that I am able to restore a subset data in the given duration or for other purposes of restoration.
I have an automated script to clone the database, but the database Clone to remove former base ASM before starting this process. I want to delete only the database files and keep the configuration (for example oratab/network/ocr and so on).

Question: There is an easy way to delete these files without logging on ASM or using DBCA?

Appreciate any help.
user12028775 wrote:
Hi all

Oracle 11.2.0.3 database
OEL 5.7

We have a host for restore purposes.
Run us monthly or quarterly operations to verify that I am able to restore a subset data in the given duration or for other purposes of restoration.
I have an automated script to clone the database, but the database Clone to remove former base ASM before starting this process. I want to delete only the database files and keep the configuration (for example oratab/network/ocr and so on).

Question: There is an easy way to delete these files without logging on ASM or using DBCA?

Yes, there is a simple way. Use the DROP DATABASE command.

Use the DROP DATABASE command to remove the database target and, if RMAN is connected to a recovery catalog, unregister it. RMAN removes all the data files, online redo logs and control belonging to the target database files. By default, RMAN prompts.

Put this command in your script before clone your database:
```
RMAN> CONNECT TARGET SYS@test1

RMAN> STARTUP FORCE MOUNT
RMAN> SQL 'ALTER SYSTEM ENABLE RESTRICTED SESSION';
RMAN> DROP DATABASE INCLUDING BACKUPS NOPROMPT;
```
Kind regards
Levi Pereira

RMAN and Begin backup mode

Hi guys I have a couple of questiopns...

I want to know if data is written to the DBWR data files when the data file is starting in backup mode.

What is the difference in the creation of archive log during normal operation of a database and a database for the RMAN backup operating?

user13087302 wrote:

Normally, Oracle should write that change in redolog files. But if the tablespace is in backup mode, then entire block will be set redolog as soon as this change is 1 took place on this block after activating the backup mode. Therefore, we log redo generation face massive if the tablespace in backup mode. So, logically you should be able to recover to the last CNS you have in hands.

What do you mean by the last SNA. Does the SNA before putting the tablespace in backup mode? Does present data in other files will be also lost, even if they are written in the data files...

PLS, look at:

SQL> create tablespace myts1 datafile 'C:\app\oracle\oradata\testdb\myts1.dbf' size 10m;

Tablespace created.

SQL> create tablespace myts2 datafile 'C:\app\oracle\oradata\testdb\myts2.dbf' size 10m;

Tablespace created.

SQL> create table myt1 tablespace myts1 as select * from dba_objects where rownum<10001;

Table created.

SQL> create table myt2 tablespace myts2 as select * from dba_objects where rownum<10001;

Table created.

SQL> alter tablespace myts1 begin backup;

Tablespace altered.

SQL> create table myt1_1 tablespace myts1 as select * from dba_objects where rownum<10001; 

Table created.

SQL> create table myt2_1 tablespace myts2 as select * from dba_objects where rownum<10001;

Table created.

SQL> create table myt1_3 tablespace myts1 as select * from dba_objects where rownum<10001;

Table created.

Backup database:

C:\Documents and Settings\Administrator>rman target /

Recovery Manager: Release 11.2.0.1.0 - Production on Wed Nov 3 15:46:55 2010

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

connected to target database: TESTDB (DBID=2517263760)

RMAN> backup database;

Starting backup at 03-NOV-10

using target database control file instead of recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=44 device type=DISK

channel ORA_DISK_1: starting full datafile backup set

channel ORA_DISK_1: specifying datafile(s) in backup set

input datafile file number=00001 name=C:\APP\ORACLE\ORADATA\TESTDB\SYSTEM01.DBF
input datafile file number=00002 name=C:\APP\ORACLE\ORADATA\TESTDB\SYSAUX01.DBF
input datafile file number=00003 name=C:\APP\ORACLE\ORADATA\TESTDB\UNDOTBS01.DBF
input datafile file number=00005 name=C:\APP\ORACLE\ORADATA\TESTDB\EXAMPLE01.DBF
input datafile file number=00006 name=C:\APP\ORACLE\ORADATA\TESTDB\MYTS1.DBF
input datafile file number=00007 name=C:\APP\ORACLE\ORADATA\TESTDB\MYTS2.DBF
input datafile file number=00004 name=C:\APP\ORACLE\ORADATA\TESTDB\USERS01.DBF

channel ORA_DISK_1: starting piece 1 at 03-NOV-10
channel ORA_DISK_1: finished piece 1 at 03-NOV-10

piece handle=C:\APP\ORACLE\FLASH_RECOVERY_AREA\PRIM_DB\BACKUPSET\2010_11_03\O1_MF_NNNDF_TAG20101103T154701_6F2LXQ5C_.BKP tag=TAG20101103T154701 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:01:35
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current control file in backup set
including current SPFILE in backup set
channel ORA_DISK_1: starting piece 1 at 03-NOV-10
channel ORA_DISK_1: finished piece 1 at 03-NOV-10
piece handle=C:\APP\ORACLE\FLASH_RECOVERY_AREA\PRIM_DB\BACKUPSET\2010_11_03\O1_MF_NCSNF_TAG20101103T154701_6F2M0PJ3_.BKP tag=TAG20101103T154701 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 03-NOV-10

Recovery Manager complete.

SQL> select current_scn from v$database;

CURRENT_SCN

-----------

    1466019

SQL> drop table myt1_3 purge;

Table dropped.

Thus, we abandoned table MYT1_3 and now trying to incomplete recovery.

SQL> shutdown abort;

ORACLE instance shut down.

SQL> startup mount;

ORACLE instance started.

Total System Global Area  431038464 bytes

Fixed Size                  1375088 bytes

Variable Size             322962576 bytes

Database Buffers          100663296 bytes

Redo Buffers                6037504 bytes

Database mounted.

C:\Documents and Settings\Administrator>rman target /

Recovery Manager: Release 11.2.0.1.0 - Production on Wed Nov 3 15:51:51 2010
Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.
connected to target database: TESTDB (DBID=2517263760, not open)

RMAN> run

2> {

3> set until scn 1466019;

4> restore database;

5> recover database;

6> sql 'alter database open resetlogs';

7> }

executing command: SET until clause

Starting restore at 03-NOV-10

using target database control file instead of recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: SID=20 device type=DISK

channel ORA_DISK_1: starting datafile backup set restore

channel ORA_DISK_1: specifying datafile(s) to restore from backup set

channel ORA_DISK_1: restoring datafile 00001 to C:\APP\ORACLE\ORADATA\TESTDB\SYS

TEM01.DBF

channel ORA_DISK_1: restoring datafile 00002 to C:\APP\ORACLE\ORADATA\TESTDB\SYSAUX01.DBF

channel ORA_DISK_1: restoring datafile 00003 to C:\APP\ORACLE\ORADATA\TESTDB\UNDOTBS01.DBF

channel ORA_DISK_1: restoring datafile 00004 to C:\APP\ORACLE\ORADATA\TESTDB\USERS01.DBF

channel ORA_DISK_1: restoring datafile 00005 to C:\APP\ORACLE\ORADATA\TESTDB\EXAMPLE01.DBF

channel ORA_DISK_1: restoring datafile 00006 to C:\APP\ORACLE\ORADATA\TESTDB\MYTS1.DBF

channel ORA_DISK_1: restoring datafile 00007 to C:\APP\ORACLE\ORADATA\TESTDB\MYTS2.DBF

channel ORA_DISK_1: reading from backup piece C:\APP\ORACLE\FLASH_RECOVERY_AREA\

PRIM_DB\BACKUPSET\2010_11_03\O1_MF_NNNDF_TAG20101103T154701_6F2LXQ5C_.BKP

channel ORA_DISK_1: piece handle=C:\APP\ORACLE\FLASH_RECOVERY_AREA\PRIM_DB\BACKUPSET\2010_11_03\O1_MF_NNNDF_TAG20101103T154701_6F2LXQ5C_.BKP tag=TAG20101103T154701

channel ORA_DISK_1: restored backup piece 1

channel ORA_DISK_1: restore complete, elapsed time: 00:01:45

Finished restore at 03-NOV-10 

Starting recover at 03-NOV-10

using channel ORA_DISK_1 

starting media recovery

media recovery complete, elapsed time: 00:00:03 

Finished recover at 03-NOV-10 

sql statement: alter database open resetlogs

RMAN>

Now, the tables:

SQL> select count(*) from myt1;

  COUNT(*)

----------

     10000

SQL> select count(*) from myt2;

   COUNT(*)

----------

     10000

SQL> select count(*) from myt1_3;

  COUNT(*)

----------

     10000

SQL> select count(*) from myt2_1;

  COUNT(*)

----------

     10000

Thus, it does not matter what is the status of any tablespace: backup or no mode. Incomplete recovery using archivelogs + redologs.

ORA-1092 marked during: ALTER DATABASE OPEN...

Oracle 11.2.0.1

Running in noarchive mode - so no backup. This is a new test database.

The database was working fine. I used SQL Developer 'data copy' to bring objects of production database for test. The program ran for hours and never finished. So I clicked on the button "Cancel". And "the copy database" program closed cleanly.

I was able to connect to the database, but when I tried to create a db link it hung. So I made an immediate halt and the database closed properly.

But when I tried to put the database in the rear seat... that's when the problem started.

SQL> startup
ORACLE instance started.

Total System Global Area 1.3495E+10 bytes
Fixed Size                  2218032 bytes
Variable Size            6845106128 bytes
Database Buffers         6576668672 bytes
Redo Buffers               71471104 bytes
Database mounted.
ORA-01092: ORACLE instance terminated. Disconnection forced
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 1
ORA-00942: table or view does not exist
Process ID: 5555
Session ID: 191 Serial number: 3

SQL> shutdown immediate
ORA-24324: service handle not initialized
ORA-01041: internal error. hostdef extension doesn't exist

Here's what's in the newspaper of the alerts:

<msg time='2014-11-07T07:30:05.326-08:00' org_id='oracle' comp_id='rdbms'
 msg_id='opiexe:3056:2780954927' client_id='' type='NOTIFICATION'
 group='admin_ddl' level='16' host_id='dub-ImrORA2.americas.epicor.net'
 host_addr='10.20.0.88' module='[email protected] (TNS V1-' pid='5555'>
 <txt>ORA-1092 signalled during: ALTER DATABASE OPEN...
 </txt>
</msg>
<msg time='2014-11-07T07:30:05.343-08:00' org_id='oracle' comp_id='rdbms'
 client_id='' type='UNKNOWN' level='16'
 host_id='dub-ImrORA2.americas.epicor.net' host_addr='10.20.0.88' module='[email protected] (TNS V1-'
 pid='5555'>
 <txt>opiodr aborting process unknown ospid (5555) as a result of ORA-1092
 </txt>
</msg>
<msg time='2014-11-07T07:30:06.531-08:00' org_id='oracle' comp_id='rdbms'
 type='UNKNOWN' level='16' host_id='dub-ImrORA2.americas.epicor.net'
 host_addr='10.20.0.88' pid='5555'>
 <txt>ORA-1092 : opitsk aborting process
 </txt>
</msg>

Please tell me how to recover this database.

It seems that you have corrupted objects "bootstrap", such as access$, which is necessary for the open operation. Only solution is to restore from a backup, or re-create DB.

BACKUP QUESTION: Why is it when I backup the Lightroom Catalog (Edit |) Settings of catalog...) only the *.lrcat file included in the ZIP file... While the *., lrdata file, the preview files, ARE NOT INCLUDED? When I restore the file *.lrcat from a backu

BACKUP QUESTION: why is it that when I backup the Lightroom Catalog (Edit |) Settings of catalog...) only the *.lrcat file included in the ZIP file... While the *., lrdata file, the preview files, ARE NOT INCLUDED? When I restore the *.lrcat file from a backup, WHERE ARE THE PREVIEW FILES that should be included in the ZIP to the top. If *.lrdata (Preview file) are so important, why are not included in the zip? [email protected]
CraigLevine wrote:

OK, so that's my scenario:
- QUESTION: WHEN I USE THE [Sub-master] .lrcat, on the new computer, don't need to inculde also files .lrdata [Sub-master] on this external drive?
- If .lrdata [Sub-master] is regenerated automatically, where he gets all the work (from the preview files) that I did, when I was working, using the .lrdata [Sub-master] when he was on the local disk.
Thanks again for staying with me on this. I don't know that your answer will solve my confusion. -Craig

[email protected]
Questions 1)

Not because the LRDATA file is fair previews, what LR displays on your screen for a faster loading of the image and will be recreated. The previews only stored in the folder LRDATA is the basic overview created at time of importation for the display of thumbnails and previews of 1:1 for images that you have actually looked in the Loupe View or I guess that appears in the develop module.

He get all the data to create the image themselves file extracts.

If you have several files on your system that have pictures in them and you select one of them that you have not looked at in a while, you will notice LR creation of previews for these images, there will be 3 white dots in the upper right corner of the thumbnail. It's LR creation of previews for the thumbnail view. If you scroll quickly in the grid view, you'll notice a few thumbnails of images are gray, until you stop scrolling, then the upper left tile will come in clear view and the white dots will appear on the other images. It's LR creating previews for those of other images. Once LR created the preview of thumbnails that are on your screen, white spot will disappear. If you scroll down again, you will see more white dots

If you switch to another folder that LR begins again create preview images in this folder. The total number of previews created and stored based on caching of the preview you have in the catalog settings dialog in the management of the files tab.

If not, you need not the LR Previews.lrdata folder. Whenever LR is not very good this folder with a catalog he recreates it to store previews in.

ALTER database command

Hello
The alter database backup controlfile to trace under... command will create a problem in the production environment?

N ° it simply generates a "CREATE CONTROLFILE' unfavorable / script, and that's it.

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

Sybrand Bakker

Senior Oracle DBA

ALTER database begin backup question

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