RE: archive log curr v. switch logfile

2002-04-02 Thread Gene Sais

I use Alter system archive log current.  If your archiver process is caught up, you 
will get this error message when issuing Alter system archive log all:

SQL alter system archive log all;
alter system archive log all
*
ERROR at line 1:
ORA-00271: there are no logs that need archiving

Just don't like error messages in the logs :).  Lisa's method seems the safest, but 
never had an archiver not keeping up and if I did, that would be an issue to be 
resolved quickly.

Here's my hot backup model with help from list members and Velpuri/Adkoli's 
Backup/Recovery Book:
#   1) Alter system archive log current ;
#   2) Check backup status.
#   3) Generate datafile listing.
#   4) Alter tablespace tablespace_name begin backup ;
#   5) Some other process,script,legato,etc. will copy database files
#  to disk or to tape.
#   6) Alter tablespace tablespace_name end backup ;
#   7) Backup controlfile.
#   8) Alter system archive log current ;
#
Archives are backed up separately 2 x day to tape.

Gene

PS.  Confident w/ hot backups, next to conquer RMAN cautiously.

 [EMAIL PROTECTED] 03/29/02 12:13PM 
Actually I use alter system archive log all.  I saw that if the database was
behind with archiving, this would ensure that all logs were written to the
arc destination.  archive log current only did the most recent.  

Am I wrong?  Please correct me if I am .

Lisa Koivu
Oracle Database Baby Oven
Fairfield Resorts, Inc.
954-935-4117


 -Original Message-
 From: Post, Ethan [SMTP:[EMAIL PROTECTED]] 
 Sent: Friday, March 29, 2002 11:48 AM
 To:   Multiple recipients of list ORACLE-L
 Subject:  RE: archive log curr v. switch logfile
 
 I believe alter system archive log current will wait until archiver has
 successfully archived the file, thus this is the one you would want to use
 in any backup scripts.  
 
 - Ethan
 
 -Original Message-
 Sent: Friday, March 29, 2002 10:24 AM
 To: Multiple recipients of list ORACLE-L
 
 
 
 
 Can anyone tell me the difference between
   alter system archive log current
 and
   alter system switch logfile
 
 (Seems they both perform checkpoint and both switch a log file).
 Is one preferred over the other for purposes of switching log files prior
 to
 applying to a standby database?
 
 Thanks for any insights.
 
 Barb
 
 -- 
 Please see the official ORACLE-L FAQ: http://www.orafaq.com 
 -- 
 Author: Baker, Barbara
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Author: Gene Sais
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RE: archive log curr v. switch logfile

2002-04-02 Thread Koivu, Lisa

Gene's afraid of R-Man!
Gene's afraid of R-Man!

Gene you will not believe how simple RMAN is once you start using it...

Lisa Koivu
Oracle Database TANK
Fairfield Resorts, Inc.
954-935-4117


 -Original Message-
 From: Gene Sais [SMTP:[EMAIL PROTECTED]]
 Sent: Tuesday, April 02, 2002 10:28 AM
 To:   Multiple recipients of list ORACLE-L
 Subject:  RE: archive log curr v. switch logfile
 
 I use Alter system archive log current.  If your archiver process is
 caught up, you will get this error message when issuing Alter system
 archive log all:
 
 SQL alter system archive log all;
 alter system archive log all
 *
 ERROR at line 1:
 ORA-00271: there are no logs that need archiving
 
 Just don't like error messages in the logs :).  Lisa's method seems the
 safest, but never had an archiver not keeping up and if I did, that would
 be an issue to be resolved quickly.
 
 Here's my hot backup model with help from list members and
 Velpuri/Adkoli's Backup/Recovery Book:
 #   1) Alter system archive log current ;
 #   2) Check backup status.
 #   3) Generate datafile listing.
 #   4) Alter tablespace tablespace_name begin backup ;
 #   5) Some other process,script,legato,etc. will copy database files
 #  to disk or to tape.
 #   6) Alter tablespace tablespace_name end backup ;
 #   7) Backup controlfile.
 #   8) Alter system archive log current ;
 #
 Archives are backed up separately 2 x day to tape.
 
 Gene
 
 PS.  Confident w/ hot backups, next to conquer RMAN cautiously.
 
  [EMAIL PROTECTED] 03/29/02 12:13PM 
 Actually I use alter system archive log all.  I saw that if the database
 was
 behind with archiving, this would ensure that all logs were written to the
 arc destination.  archive log current only did the most recent.  
 
 Am I wrong?  Please correct me if I am .
 
 Lisa Koivu
 Oracle Database Baby Oven
 Fairfield Resorts, Inc.
 954-935-4117
 
 
  -Original Message-
  From:   Post, Ethan [SMTP:[EMAIL PROTECTED]] 
  Sent:   Friday, March 29, 2002 11:48 AM
  To: Multiple recipients of list ORACLE-L
  Subject:RE: archive log curr v. switch logfile
  
  I believe alter system archive log current will wait until archiver has
  successfully archived the file, thus this is the one you would want to
 use
  in any backup scripts.  
  
  - Ethan
  
  -Original Message-
  Sent: Friday, March 29, 2002 10:24 AM
  To: Multiple recipients of list ORACLE-L
  
  
  
  
  Can anyone tell me the difference between
  alter system archive log current
  and
  alter system switch logfile
  
  (Seems they both perform checkpoint and both switch a log file).
  Is one preferred over the other for purposes of switching log files
 prior
  to
  applying to a standby database?
  
  Thanks for any insights.
  
  Barb
  
  -- 
  Please see the official ORACLE-L FAQ: http://www.orafaq.com 
  -- 
  Author: Baker, Barbara
INET: [EMAIL PROTECTED] 
  
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  -- 
  Author: Post, Ethan
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Re: archive log curr v. switch logfile

2002-03-29 Thread Igor Neyman

Will alter system archive log current work, if the database is not in
archive mode?

Igor Neyman, OCP DBA
[EMAIL PROTECTED]


- Original Message -
To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED]
Sent: Friday, March 29, 2002 11:23 AM




 Can anyone tell me the difference between
 alter system archive log current
 and
 alter system switch logfile

 (Seems they both perform checkpoint and both switch a log file).
 Is one preferred over the other for purposes of switching log files prior
to
 applying to a standby database?

 Thanks for any insights.

 Barb

 --
 Please see the official ORACLE-L FAQ: http://www.orafaq.com
 --
 Author: Baker, Barbara
   INET: [EMAIL PROTECTED]

 Fat City Network Services-- (858) 538-5051  FAX: (858) 538-5051
 San Diego, California-- Public Internet access / Mailing Lists
 
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 also send the HELP command for other information (like subscribing).

-- 
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-- 
Author: Igor Neyman
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RE: archive log curr v. switch logfile

2002-03-29 Thread Koivu, Lisa

Actually I use alter system archive log all.  I saw that if the database was
behind with archiving, this would ensure that all logs were written to the
arc destination.  archive log current only did the most recent.  

Am I wrong?  Please correct me if I am .

Lisa Koivu
Oracle Database Baby Oven
Fairfield Resorts, Inc.
954-935-4117


 -Original Message-
 From: Post, Ethan [SMTP:[EMAIL PROTECTED]]
 Sent: Friday, March 29, 2002 11:48 AM
 To:   Multiple recipients of list ORACLE-L
 Subject:  RE: archive log curr v. switch logfile
 
 I believe alter system archive log current will wait until archiver has
 successfully archived the file, thus this is the one you would want to use
 in any backup scripts.  
 
 - Ethan
 
 -Original Message-
 Sent: Friday, March 29, 2002 10:24 AM
 To: Multiple recipients of list ORACLE-L
 
 
 
 
 Can anyone tell me the difference between
   alter system archive log current
 and
   alter system switch logfile
 
 (Seems they both perform checkpoint and both switch a log file).
 Is one preferred over the other for purposes of switching log files prior
 to
 applying to a standby database?
 
 Thanks for any insights.
 
 Barb
 
 -- 
 Please see the official ORACLE-L FAQ: http://www.orafaq.com
 -- 
 Author: Baker, Barbara
   INET: [EMAIL PROTECTED]
 
 Fat City Network Services-- (858) 538-5051  FAX: (858) 538-5051
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 Author: Post, Ethan
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RE: archive log curr v. switch logfile

2002-03-29 Thread Post, Ethan

I believe alter system archive log current will wait until archiver has
successfully archived the file, thus this is the one you would want to use
in any backup scripts.  

- Ethan

-Original Message-
Sent: Friday, March 29, 2002 10:24 AM
To: Multiple recipients of list ORACLE-L




Can anyone tell me the difference between
alter system archive log current
and
alter system switch logfile

(Seems they both perform checkpoint and both switch a log file).
Is one preferred over the other for purposes of switching log files prior to
applying to a standby database?

Thanks for any insights.

Barb

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Baker, Barbara
  INET: [EMAIL PROTECTED]

Fat City Network Services-- (858) 538-5051  FAX: (858) 538-5051
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Re: archive log curr v. switch logfile

2002-03-29 Thread Charlie Mengler



SQL alter system archive log current;
alter system archive log current
*
ERROR at line 1:
ORA-00258: manual archiving in NOARCHIVELOG mode must identify log


  1* alter system archive log current to '/tmp/dummy.log'
SQL /
alter system archive log current to '/tmp/dummy.log'
*
ERROR at line 1:
ORA-00258: manual archiving in NOARCHIVELOG mode must identify log


SQL !oerr ora 258
00258, 0, manual archiving in NOARCHIVELOG mode must identify log
// *Cause: The database is in NOARCHIVELOG mode and a command to manually
//  archive a log did not specify the log explicitly by sequence
//  number, group number or filename.
// *Action: Specify log by filename, by group number or by thread and
//  sequence number.



SQL select * from v$log;
#:-)

GROUP#THREAD#  SEQUENCE#  BYTESMEMBERS ARC STATUS
-- -- -- -- -- --- 
FIRST_CHANGE# FIRST_TIM
- -
 4  1   9006   67108864  1 NO  CURRENT
   1262712302 29-MAR-02

 5  1   9004   67108864  1 YES INACTIVE
   1262692183 29-MAR-02

 6  1   9005   67108864  1 YES INACTIVE
   1262692291 29-MAR-02


SQL alter system archive log group 4 to '/tmp/dummy.log';
alter system archive log group 4 to '/tmp/dummy.log'
*
ERROR at line 1:
ORA-00259: log 4 of open thread 1 is the current log, cannot archive
ORA-00312: online log 4 thread 1: '/db02/oracle/oradata/CCC/redo04.log'


SQL  alter system archive log group 5 to '/tmp/dummy.log';
 alter system archive log group 5 to '/tmp/dummy.log'
*
ERROR at line 1:
ORA-16013: log 5 sequence# 9004 does not need archiving
ORA-00312: online log 5 thread 1: '/db02/oracle/oradata/CCC/redo05.log'


Igor Neyman wrote:
 
 Will alter system archive log current work, if the database is not in
 archive mode?
 
 Igor Neyman, OCP DBA
 [EMAIL PROTECTED]
 
 - Original Message -
 To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED]
 Sent: Friday, March 29, 2002 11:23 AM
 
 
 
  Can anyone tell me the difference between
  alter system archive log current
  and
  alter system switch logfile
 
  (Seems they both perform checkpoint and both switch a log file).
  Is one preferred over the other for purposes of switching log files prior
 to
  applying to a standby database?
 
  Thanks for any insights.
 
  Barb
 
  --
  Please see the official ORACLE-L FAQ: http://www.orafaq.com
  --
  Author: Baker, Barbara
INET: [EMAIL PROTECTED]
 
  Fat City Network Services-- (858) 538-5051  FAX: (858) 538-5051
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 --
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 --
 Author: Igor Neyman
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-- 
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RE: archive log curr v. switch logfile

2002-03-29 Thread Baker, Barbara

No, actually it does not. I just tried it on a db with archive turned off
and got an error message (ORA-00258: manual archiving in NOARCHIVELOG mode
must identify log).

Good point.  Thanks.


 --
 From: Igor Neyman[SMTP:[EMAIL PROTECTED]]
 Reply To: [EMAIL PROTECTED]
 Sent: Friday, March 29, 2002 9:48 AM
 To:   Multiple recipients of list ORACLE-L
 Subject:  Re: archive log curr v. switch logfile
 
 Will alter system archive log current work, if the database is not in
 archive mode?
 
 Igor Neyman, OCP DBA
 [EMAIL PROTECTED]
 
 
 - Original Message -
 To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED]
 Sent: Friday, March 29, 2002 11:23 AM
 
 
 
 
  Can anyone tell me the difference between
  alter system archive log current
  and
  alter system switch logfile
 
  (Seems they both perform checkpoint and both switch a log file).
  Is one preferred over the other for purposes of switching log files
 prior
 to
  applying to a standby database?
 
  Thanks for any insights.
 
  Barb
 
  --
  Please see the official ORACLE-L FAQ: http://www.orafaq.com
  --
  Author: Baker, Barbara
INET: [EMAIL PROTECTED]
 
  Fat City Network Services-- (858) 538-5051  FAX: (858) 538-5051
  San Diego, California-- Public Internet access / Mailing Lists
  
  To REMOVE yourself from this mailing list, send an E-Mail message
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  (or the name of mailing list you want to be removed from).  You may
  also send the HELP command for other information (like subscribing).
 
 -- 
 Please see the official ORACLE-L FAQ: http://www.orafaq.com
 -- 
 Author: Igor Neyman
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Re: archive log curr v. switch logfile

2002-03-29 Thread Rajesh . Rao


The 'ALTER SYSTEM ARCHIVELOG CURRENT' is the preferred one that should be
used for backup scripts.

The reason being, if you have noticed when you do an 'ALTER SYSTEM SWITCH
LOGFILE', you get the prompt back immediately. This command performs a
database checkpoint, switches to the next log, signals the archiver to copy
the logfile to the archive destination, and returns the prompt. Mind you,
this command does not wait for the archive to complete. As the command
indicates, it only performs a log switch. Hence, you might come across
backup scripts which does an 'ALTER SYSTEM SWITCH LOGFILE' and then does a
SLEEP for some time, thus allocating some time for the Archiver to finish
archiving. Whereas, an 'ALTER SYSTEM ARCHIVE LOG CURRENT' does all of the
above, but does not return back to the prompt until the archive is
complete.

Also, 'ALTER SYSTEM SWITCH LOGFILE' archives only the current thread.
Whereas the 'ALTER SYSTEM ARCHIVELOG CURRENT' needs a thread to be
specified and If you miss the thread parameter, Oracle archives all redo
log file groups from all enabled threads, including logs previous to
current logs.

Hope this helps.

Raj




   

Baker, Barbara   

bbaker@denvernewspaperaTo: Multiple recipients of 
list ORACLE-L [EMAIL PROTECTED]
gency.com  cc:

Sent by:Subject: archive log curr v. 
switch logfile
[EMAIL PROTECTED]   

   

   

March 29, 2002 11:23 AM

Please respond to  

ORACLE-L   

   

   







Can anyone tell me the difference between
   alter system archive log current
and
   alter system switch logfile

(Seems they both perform checkpoint and both switch a log file).
Is one preferred over the other for purposes of switching log files prior
to
applying to a standby database?

Thanks for any insights.

Barb


-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: 
  INET: [EMAIL PROTECTED]

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Re: archive log curr v. switch logfile

2002-03-29 Thread Igor Neyman

That's exactly, what I meant (besides the fact, that alter system archive
log current will return only after Archiver is done archiving current
log).

Igor Neyman, OCP DBA
[EMAIL PROTECTED]


- Original Message -
To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED]
Sent: Friday, March 29, 2002 12:48 PM




 SQL alter system archive log current;
 alter system archive log current
 *
 ERROR at line 1:
 ORA-00258: manual archiving in NOARCHIVELOG mode must identify log


   1* alter system archive log current to '/tmp/dummy.log'
 SQL /
 alter system archive log current to '/tmp/dummy.log'
 *
 ERROR at line 1:
 ORA-00258: manual archiving in NOARCHIVELOG mode must identify log


 SQL !oerr ora 258
 00258, 0, manual archiving in NOARCHIVELOG mode must identify log
 // *Cause: The database is in NOARCHIVELOG mode and a command to manually
 //  archive a log did not specify the log explicitly by sequence
 //  number, group number or filename.
 // *Action: Specify log by filename, by group number or by thread and
 //  sequence number.



 SQL select * from v$log;
 #:-)

 GROUP#THREAD#  SEQUENCE#  BYTESMEMBERS ARC STATUS
 -- -- -- -- -- --- ---
-
 FIRST_CHANGE# FIRST_TIM
 - -
  4  1   9006   67108864  1 NO  CURRENT
1262712302 29-MAR-02

  5  1   9004   67108864  1 YES INACTIVE
1262692183 29-MAR-02

  6  1   9005   67108864  1 YES INACTIVE
1262692291 29-MAR-02


 SQL alter system archive log group 4 to '/tmp/dummy.log';
 alter system archive log group 4 to '/tmp/dummy.log'
 *
 ERROR at line 1:
 ORA-00259: log 4 of open thread 1 is the current log, cannot archive
 ORA-00312: online log 4 thread 1: '/db02/oracle/oradata/CCC/redo04.log'


 SQL  alter system archive log group 5 to '/tmp/dummy.log';
  alter system archive log group 5 to '/tmp/dummy.log'
 *
 ERROR at line 1:
 ORA-16013: log 5 sequence# 9004 does not need archiving
 ORA-00312: online log 5 thread 1: '/db02/oracle/oradata/CCC/redo05.log'


 Igor Neyman wrote:
 
  Will alter system archive log current work, if the database is not in
  archive mode?
 
  Igor Neyman, OCP DBA
  [EMAIL PROTECTED]
 
  - Original Message -
  To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED]
  Sent: Friday, March 29, 2002 11:23 AM
 
  
  
   Can anyone tell me the difference between
   alter system archive log current
   and
   alter system switch logfile
  
   (Seems they both perform checkpoint and both switch a log file).
   Is one preferred over the other for purposes of switching log files
prior
  to
   applying to a standby database?
  
   Thanks for any insights.
  
   Barb
  
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