I have full, differential and transactional backups of the database. I was trying to restore one by one; but only the full backup is getting restored, but after that when I am trying to restore the differential backup facing issue with SQL Server Management Studio. So I tried with some SQL commands, this is the link what I tried with to restore, but no luck
Restore differential backup
Can anyone tell me the steps tor restore these backups? Thank you
It is important to be acquainted with the restore sequence of how a full database backup is restored.
First, restore full database backup, differential database backup and all transaction log backups WITH NORECOVERY option. After that, bring back database online using WITH RECOVERY option.
Following is a sample Restore Sequence
RESTORE DATABASE FROM full_database_backup WITH NORECOVERY;
GO
RESTORE DATABASE FROM differential_backup WITH NORECOVERY;
GO
RESTORE LOG FROM log_backup WITH NORECOVERY;
GO
-- Repeat this until you restore last log backup
RESTORE DATABASE WITH RECOVERY;
GO
Note:
While performing a RESTORE operation using more than one file, always use the NORECOVERY flag. This will keep the database offline to prevent any changes which could create some integrity issues. Once all the backup files have been restored, run the RESTORE command with the RECOVERY option to get the database online and operational.
Source: URL
Related
We have RESTORE VERIFYONLY to check the validity of SQL Servers backups.
It Verifies the backup but does not restore it, and checks to see that the backup set is complete and the entire backup is readable.
Is there any way to do the same in PostgreSQL?
How can we validate a logical backup in PostgreSQL without restoring it?
I have three different databases for my different environments (hsprd, hstst,hstrn). hsprd is my production environment with live data.
Every so often, a request comes through to restore production data to hstrn or hstst. I typically run this command (after stopping, then dropping the db):
db2 restore db hsprd taken at 20140331180002 to /dbs into hstrn newlogpath /dbs/log/hstrn without rolling forward;
When running this, I receive this message:
SQL2537N Roll-forward is required following the Restore.
Could someone advise how to fix this?
Thanks.
edit: My backups are here:
(/home/dbtmp/backups)> ll
total 22791416
-rwxrwxr-x 1 hsprd cics 11669123072 Mar 31 18:03 HSPRD.0.hsprd.NODE0000.CATN0000.20140331180002.001
After restoring my database and omitting without rolling forward, I receive this message when trying to query the database:
SQL1117N A connection to or activation of database "HSTRN" cannot be made
because of ROLL-FORWARD PENDING. SQLSTATE=57019
When I try to rollforward, with this command, I receive this response:
(/home/dbtmp/backups)> db2 rollforward db hstrn to end of backup and complete;
SQL4970N Roll-forward recovery on database "HSTRN" cannot reach the specified
stop point (end-of-log or point-in-time) on database partition(s) "0".
Roll-forward recovery processing has halted on log file "S0006353.LOG".
The first error suggests that you are restoring an online backup, which must be rolled forward. Alternatively, use an offline backup image, then you can include the without rolling forward option.
The second error means that you need to issue the ROLLFORWARD command before you can use the database restored from an online backup.
Finally the third error means that the ROLLFORWARD command is unable to find the logs required for it to succeed. Assuming the logs are included in the backup image, you'll need to specify the LOGTARGET option on the RESTORE command to extract them, presumably to the NEWLOGPATH location.
I read a lot of documentations for db2 restore but I could not find how to perform online restore from the last database backup but without roll forwarding of logs?
I will appreciate command example.
On example my last online backup is made 1st february. I want to do ONLINE RESTORE of that backup but without logs after 1st February (similar with offline restore option WITHOUT ROLL FORWARD).
I am using db2 9.7
Thank you in advance
The database backup contains a snapshot of the tablespaces, and they may not be in stable state. Roll-forward is always required (unless you want to take insane risks by forcing DB2 to start using potentially corrupt data) to reach the nearest stable state.
If you are asking your question because you want manageable database backup dumps without having to worry about shipping logs etc, use the INCLUDE LOGS option when taking the backup. It will include in the backup file the minimum set of transaction logs that would be required for reaching stable state. When restoring you could then use the LOGS to extract them and then ROLLFORWARD DATABASE for the required typical 0-x seconds (depending on your database transactions).
A lazy dba would probably just use the RECOVER DB SAMPLE TO 2013-02-01-00.00.00 and allow the DB2 to worry about all the details. It will automatically fetch the required database backup and transaction files (even from the backup tapes etc if you set them up correctly), and do everything for you - as long as you don't attempt to manually manage them.
I am using command
db2 restore db S18 from /users/intadm/s18backup/ taken at 20110913113341 on /users/db2inst1/ dbpath on /users/db2inst1/ redirect without rolling forward
to restore database from backup file located in /users/intadm/s18backup/ .
Command execution gives such output:
SQL1277W A redirected restore operation is being performed. Table space
configuration can now be viewed and table spaces that do not use automatic
storage can have their containers reconfigured.
DB20000I The RESTORE DATABASE command completed successfully.
When I'm trying to connect to restored DB (by executing 'db2 connect to S18'), I'm getting this message:
SQL0752N Connecting to a database is not permitted within a logical unit of
work when the CONNECT type 1 setting is in use. SQLSTATE=0A001
When I'm trying to connect to db with db viewer like SQuireL, the error is like:
DB2 SQL Error: SQLCODE=-1119, SQLSTATE=57019, SQLERRMC=S18, DRIVER=3.57.82
which means that 'error occurred during a restore function or a restore is still in progress' (from IBM DB2 manuals)
How can I resolve this and connect to restored database?
UPD: I've executed db2ckbkp on backup file and it did not identified any issues with backup file itself.
without rolling forward can only be used when restoring from an offline backup. Was your backup taken offline? If not, you'll need to use roll forward.
When you do a redirected restore, you are telling DB2 that you want to change the locations of the data files in the database you are restoring.
The first step you show above will execute very quickly.
Normally, after you execute this statement, you would have one or more SET TABLESPACE CONTAINERS to set the new locations of each data file. It's not mandatory to issue these statements, but there's no point in specifying the redirect option in your RESTORE DATABASE command if you're not changing anything.
Then, you would issue the RESTORE DATABASE S18 COMPLETE command, which would actually read the data from the backup image, writing it to the data files.
If you did not execute the RESTORE DATABASE S18 COMPLETE, then your restore process is incomplete and it makes sense that you can't connect to the database.
What I did and what has worked:
Executed:
db2 restore db S18 from /users/intadm/s18backup/ taken at 20110913113341 on /<path with sufficient disk space> dbpath on /<path with sufficient disk space>
I got some warnings before, that some table spaces are not moved. When I specified dbpath to partition with sufficient disk space - warning has disappeared.
After that, as I have an online backup, I issued:
db2 rollforward db S18 to end of logs and complete
That's it! Now I'm able to connect.
I need to automate the creation of a duplicate db from the .bak of my production db. I've done the operation plenty of times via the GUI but when executing from the commandline I'm a little confused by the various switches, in particular, the filenames and being sure ownership is correctly replicated.
Just looking for the TSQL syntax for RESTORE that accomplishes that.
Assuming you're using SQL Server 2005 or 2008, the simplest way is to use the "Script" button at the top of the restore database dialog in SQL Server Management Studio. This will automatically create a T-SQL script with all the options/settings configured in the way you've filled in the dialog.
look here: How to: Restore a Database to a New Location and Name (Transact-SQL), which has a good example:
This example creates a new database
named MyAdvWorks. MyAdvWorks is a
copy of the existing AdventureWorks
database that includes two files:
AdventureWorks_Data and
AdventureWorks_Log. This database uses
the simple recovery model. The
AdventureWorks database already
exists on the server instance, so the
files in the backup must be restored
to a new location. The RESTORE
FILELISTONLY statement is used to
determine the number and names of the
files in the database being restored.
The database backup is the first
backup set on the backup device.
USE master
GO
-- First determine the number and names of the files in the backup.
-- AdventureWorks_Backup is the name of the backup device.
RESTORE FILELISTONLY
FROM AdventureWorks_Backup
-- Restore the files for MyAdvWorks.
RESTORE DATABASE MyAdvWorks
FROM AdventureWorks_Backup
WITH RECOVERY,
MOVE 'AdventureWorks_Data' TO 'D:\MyData\MyAdvWorks_Data.mdf',
MOVE 'AdventureWorks_Log' TO 'F:\MyLog\MyAdvWorks_Log.ldf'
GO
This may help also: Copying Databases with Backup and Restore