SAP HANA SPS10- Backup/Recovery

1© 2014 SAP AG or an SAP affiliate company. All rights reserved.
SAP HANA SPS 10 – What’s New?
Backup/Recovery
Andrea Kristen, SAP HANA Product Management June, 2015
(Delta from SPS 09 to SPS 10)

© 2015 SAP SE or an SAP affiliate company. All rights reserved. 2Public
Agenda
• Backup
• Recovery
• Support for multitenant database containers
• Certification

What’s New in SAP HANA SPS10: Backup and Recovery
Backup integration into SAP HANA Cockpit (I)
Backup operations are now available in SAP
HANA Cockpit
Note: You can also use SAP HANA Studio to
display backup information
Viewing the backup status
 Prerequisites:
o System privilege BACKUP OPERATOR or BACKUP
ADMIN
o Role sap.hana.backup.roles::Operator or
sap.hana.backup.roles::Administrator
1. In SAP HANA Cockpit, the Data Backup tile displays
the status of the current data backup:
o Successful, Running, Snapshot Prepared, Canceled,
Error

Backup integration into SAP HANA Cockpit (II)
Displaying detailed information on backups
 Prerequisites:
ADMIN
1. In SAP HANA Cockpit, click on the Data Backup tile
2. The backup catalog is displayed. It shows:
o Time range that the backup catalog covers
o Size of the backup catalog itself
o Information on the last backups (status, start time, backup
type, duration, size, destination type and comment)
3. By clicking on an entry in the catalog, detailed
information on the respective backup is displayed

Backup integration into SAP HANA Cockpit (III)
Creating a data backup
Note: You can also use SAP HANA Studio to create
data backups.
 Prerequisites:
ADMIN
1. In SAP HANA Cockpit, click on the Data Backup tile
2. On the Backup Catalog page, choose Start New
Backup and specify your backup settings
3. Start the backup by choosing Back Up
4. The progress is displayed on the Data Backup tile
To view the progress details, click the tile

Data backups: full and delta
Delta backups contain data that was changed
since the last full data backup
Two types of delta backups are available:
 Incremental and differential
Note: Delta backups are data backups – they
contain actual data. In contrast, log backups
contain redo log entries (sequence of changes)
F
Full data backup
– all data
I I I
Incremental backup
– changed data since
the last data backup
(full or delta)
D
Differential backup
– changed data since
the last full backup
A full data backups contains all current data
Note: Old data that is no longer valid but might still
be physically present in the data volumes is not
part of the data backup

Delta backups – when to use what
Incremental backups...
 ...are usually small
 faster backup
 ...are restored one after the other during a recovery
 longer recovery times
Differential backups...
 ...increase the amount of data saved with each backup
 longer backup times
 ...reduce the number of data backups during recovery
 faster recovery
You can also mix incremental and differential
backups in your backup strategy
F
Full data backup
I I I
Incremental backup
D
Differential backup

Delta backups – Creating a delta backup
Delta backups can be created using SAP HANA
Studio
 Prerequisites: System privilege BACKUP OPERATOR
or BACKUP ADMIN; DATABASE ADMIN (for MDC)
1. In the Systems view in SAP HANA Studio, right-click
on the system and choose Backup and Recovery 
Backup System...
2. Choose the backup type, for a delta backup: either
Differential Data Backup or Incremental Data Backup,
and specify further settings
3. Start the backup

Delta backups – Backup catalog
Delta backups are included in the backup
catalog
In SAP HANA Studio, they are hidden by default
 Prerequisites: System privilege BACKUP OPERATOR
or BACKUP ADMIN; DATABASE ADMIN (for MDC)
1. In the Systems view in SAP HANA Studio, double-
click on Backup and open the Backup Catalog tab
2. Select Show Delta Backups

Delta backups – Backup lifecycle management
Backup lifecycle management now also
includes delta backups
Deleting old data backups
 Prerequisites: System privilege BACKUP ADMIN;
DATABASE ADMIN (for MDC)
 When choosing to delete all backups older than a
specified full backup, older delta backups will also be
deleted along with older full backups and log backups

Delta backups – Backint support
Delta backups are compatible with the current Backint API specification
There are a few points that you need to be aware of when using a 3rd party backup tool
 For delta data backups, SAP HANA is using the Backint option -l LOG in combination with the data Backint
parameter file given as option
-p /usr/sap/<SID>/SYS/global/hdb/opt/hdbconfig/init<SID>Data.utl
 The Backint parameter file is tool-specific and typically contains information like the backup destination (the
name of the backup container/pool in the 3rd party backup tool that is used to store the backup).
 Note that some 3rd party backup tools support only one Backint parameter file for both data and log backups
 In some cases backup tools use the Backint option -l to determine the suitable backup container from the
Backint parameter file, which means that for the option –l LOG the log backup container is used.
Caution: Backup containers that were until SPS10 only used for log backups may be sized too small for delta
backups. This could lead to a database standstill due to a log full situation.
Recommendation: Ask your 3rd party backup tool vendor for details on how to configure the
respective 3rd party backup tool for usage with delta backups. If in doubt configure two dedicated
Backint parameter files: one for data backups, and one for log backups.

Delta backups – SQL commands
Prerequisites: System privilege BACKUP OPERATOR or BACKUP ADMIN; DATABASE ADMIN (MDC)
Executing an incremental backup
BACKUP DATA INCREMENTAL USING FILE ('2015-05-15')
Resulting delta backup files:
Data backup file: 2015-05-15_databackup_incremental_0_1431675865039_0_1
Executing a differential backup
BACKUP DATA DIFFERENTIAL USING FILE ('2015-05-15')
Resulting delta backup files:
Data backup file: 2015-05-15_databackup_differential_0_1431675646547_0_1
Backup ID of
basis data backup
Backup ID of
delta data backup

Backups during normal operation
Last
full backup
1
Log backup
4
Most recent
entries from
log area
5
Incremental backup
2
Differential backup
3
Time
Now
F DI I I I

SAP HANA Backup and Recovery
Recovery options
(A) To the most recent state
 Specified full data backup or snapshot
+ last differential backup (Note: not supported if a snapshot is used as basis)
+ subsequent incremental backups (Note: not supported if a snapshot is used as basis)
+ subsequent log backups
+ redo log entries that are still available in the log area (if it was not destroyed by the failure)
Time
A
F DI I I
B
(B) To a point in time in the past
 Same as above; redo log entries from the log area might not be required
C
(C) To a specified full data backup or snapshot
 Specified full data backup or snapshot, but no log replay (“clear log”)
I

Recovery using delta backups – Tool support
Recovery includes delta backups automatically
Recovering to the latest point in time using SAP HANA Studio
 Prerequisites: Credentials of <sid>adm operating system user
1. In the Systems view in SAP HANA studio, right-click on the system,
choose Backup and Recovery  Recover System... and enter the
required credentials. The system is shut down.
2. Select the recovery type and specify the log backup location
3. Select the full backup upon which the recovery is to be based
4. Specify further recovery settings as usual.
If you do not want SAP HANA to use delta backups for the recovery,
de-select Use Delta Backups. Note: If you do not exclude delta backups,
SAP HANA automatically determines the best recovery strategy based
on all available backups, including delta backups.
5. Start the recovery

Recovery using delta backups – SQL commands
If delta backups are available, SAP HANA per default uses them for recovery
If you do not want delta backups to be used in a recovery, you need to specify this explicitly.
Executing the database to a point in time, excluding delta backups
 Prerequisites: Credentials of <sid>adm operating system user, or system privilege DATABASE ADMIN (for
tenant databases in MDC system)
RECOVER DATABASE UNTIL TIMESTAMP '2015-05-15 10:00:00' IGNORE DELTA DATA BACKUPS

Recovery using delta backups – Identify required backups using hdbbackupdiag
You can use hdbbackupdiag to display the backups required for a recovery of the database
This helps you to keep the quantity of the files that have to be made available to a minimum.
Finding out which backups are required for a recovery to a specified point in time
 Prerequisites: You are logged on to the database server with the operating system user <sid>adm and have
read authorization for the backup location. For more information, see the SAP HANA Administration Guide.
hdbbackupdiag -f -d /usr/sap/S10/HDB10/backup/log -u "2015-05-04 08:35"
found backup catalog 1430722970373 from file
/usr/sap/S10/HDB10/backup/log/log_backup_0_0_0_0.1430722970373
using backup catalog 1430722970373 from file
/usr/sap/S10/HDB10/backup/log/log_backup_0_0_0_0.1430722970373
COMPLETE_DATA_BACKUP_2_databackup_3_1
DIFF_DATA_BACKUP_2_databackup_differential_1430721900756_1430722012437_3_1
INC_DATA_BACKUP_4_databackup_incremental_1430722012437_1430722966073_3_1
Note: To exclude delta backups, use the --ignoreDeltaDataBackups option

Backup header contains SAP HANA revision
Using hdbbackupdiag you can display which SAP HANA version was used to create a backup
Displaying the backup header including the SAP HANA version
 Prerequisites: You are logged on to the database server with the operating system user <sid>adm and have
read authorization for the backup location. For more information, see the SAP HANA Administration Guide.
Example: Display version information for data backup
hdbbackupdiag -v -b 2015-05-11_09-26_databackup_3_1

Support for multitenant
database containers

Multitenant database containers: Backup/recovery concept
MDC systems follow the same backup/recovery principles as single-container systems
The system database plays a central role for MDC backup and recovery
 It can initiate both backups of the system database itself and of individual tenants databases. A tenant database
can also carry out its own backups unless this feature has been disabled for this tenant database
 Recoveries are always initiated from the system database
To recover a complete MDC system, the system database and all tenants need to be recovered
individually
Note: Snapshots are currently not supported

Multitenant database containers: SAP HANA Cockpit support
You can use SAP HANA Cockpit to create data
backups of the system database and of
individual tenant databases
Log on to the relevant database and click on the
Data Backup tile
Create data backups and view backup information
in the same way as for single-container databases
Note: You can also use SAP HANA Studio to create
data backups. Backup lifecycle management is
currently not available in SAP HANA Cockpit.

Multitenant database containers: Backint support
The current Backint API specification also covers MDC systems
There are a few points that you need to be aware of when using a 3rd party backup tool
Isolation level “high”
With SPS10, a new option “isolation level” was introduced for MDC systems. If the isolation level is set
to high, all tenant databases run under individual operating system users.
In high isolation scenarios, Backint is supported from the SAP HANA side but you need to check with
your 3rd party tool vendor whether any tool-specific restrictions apply.
Tenant copy
Tenant copy using Backint is currently not supported. Use file system backups for tenant copy instead.

Backint Certification
Certification is an installation prerequisite for backup tools using the “Backint for SAP HANA” interface.
 SAP Note 1730932 (Using backup tools with Backint)
 "Backint for SAP HANA" Certification
Certified tools (as of 2015-04-23)
Online listing of certified tools: Application Development Partner Directory
 Enter the search term HANA-BRINT and click on a partner name  ”SAP Certified Solutions” for further details
Vendor Backup Tool Support Process (SAP Notes)
Commvault Simpana 10.0, Hitachi Data Protection Suite 10 (via Simpana Backint interface) 1957450
EMC Networker 8.2, Interface for Data Domain Boost 1.0 1999166, 1970559
HP Data Protector 7.0, 8.1, 9.0 1970558
IBM Tivoli Storage Manager for Enterprise 6.4 1913500
SEP Sesam 4.4 2024234
Symantec NetBackup 7.5 1913568

More information
 Documentation: SAP Help Portal – Administration Guide,
Technical Operations Manual, SQL Reference Guide
 Overview presentation: SAP HANA Backup/Recovery Overview
 Certification: “Backint for SAP HANA” Certification
 Best practice: SAP Note 2091951: SAP HANA Backup and
Restore
 Training: HA200: SAP HANA - Operations & Administration
SAP Note Title
1642148 FAQ: SAP HANA database backup and recovery
2031547 Backint Tools und Support
2039883 FAQ: SAP HANA database and storage snapshots
2165547 FAQ: SAP HANA Database Backup & Recovery in a
SAP HANA System Replication landscape
2021789 SAP HANA revision and maintenance strategy
Further SAP notes are available on component HAN-DB-BAC

SAP HANA SPS10- Backup/Recovery

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