hana migrating single db to multi tenant database

7/24/2019 HANA Migrating Single DB to Multi Tenant Database

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Converting Single

DB to Multi TenantDatabase


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Purpose/Beneft :You can run multiple tenant databases on one

SAP Hana System while still having only onesotware version or a SAP HAA system!

Some advantages are:

Strong separation o data and users!

Bac"up and restore available by tenantdatabase!

#esource management by tenant $cpu%memory&


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'ptions Available+! ,onvert an e-isting single server to a multi

tenant database% please not that the change ispermanent and cannot be reversed!


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Prere.uisites :

SPS * and above

Statistics Server should be migrated toameserver!


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Steps to ,onvert :

(! Stop HAA database

HB stop


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Steps to ,onvert :+! 0-ecute below command

Hdbnsutil 1convert2o3ultiB


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Steps to ,onvert :2his action e-ecutes the ollowing steps:

(! Set 4multidb mode5 6ag in the confguration

+! ,reate the system and tenant database

7! 8pdates the secure store in the fle $SS9S& system!

2he newly created database maintains the original dataand has the original port confguration% the initial HB

start command only starts the system databasethough! 2hereore it shows that you can start thetenant database by an S;< statement% ater you dothis it will automatically start when using the HBstart command in the uture!


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Steps to ,onvert :2his action e-ecutes the ollowing steps:

(! Set 4multidb mode5 6ag in the confguration

+! ,reate the system and tenant database

7! 8pdates the secure store in the fle $SS9S& system!

2he newly created database maintains the original dataand has the original port confguration% the initial HB

start command only starts the system databasethough! 2hereore it shows that you can start thetenant database by an S;< statement% ater you dothis it will automatically start when using the HBstart command in the uture!


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2roubleShooting=hen you try to connect with hdbs.l to this new

SystemB database it will ail with the error:

* 10: invalid username or password SQLSTATE: 28000

#eason : 2his is because you need to reset thepassword o the SYS203 user or the SystemBdatabase!

Solution : 3a"e sure database is stopped or stop using

command HB stop!2hen reset the system password o the user 4SYS2035

with the command 4hdbnameserver?reset8serSystem5!


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2roubleshooting


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ow connect to the database with the hdbs.lcommand 4hdbs.l ?i @instance number ?n@hostname:7--(7 ?d SystemB ?u SYS2035ater which the system will as" you or apassword!


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ow you have to start the tenant database with theS;< command 4A


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Ater doing this you can e-it the hdbs.lcommand and chec" i the tenant database isrunning with the 4sapcontrol ?nr @instance?unction DetProcess


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How to Add tenant B to HAAStudio

2o Add 3ulti 2enant atabase to HAA studio%ollow below steps!

(! Select Add ew system


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How to Add tenant B to HAAStudio+! Select Add ew system


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How to Add tenant B to HAAStudio7! 0nter 8sername and Password


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How to Add tenant B to HAAStudioF! 2enant atabase is shown separately!

hana migrating single db to multi tenant database

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