Dirty Upgrade, Unicode Conversion
and Dual Stack Split
Bala Prabahar
BAPS Software Consulting Services Inc.
07/15/2011
MOTIVATION
Unicode and Single Stack Systems
BW
EP ECC SRM
SOL
MAN
Non-Unicode and Dual Stack
APPROACH
Unicode and Single
Stack Systems
BW
EP ECC SRM
SOL
MAN
Non-Unicode and Dual Stack
UCC
2
3
BW
UPGRADE
Available Tools
Processes
Upgrade and Unicode Conversion Together (CU/UC)
Upgrade first and then Unicode Conversion
1
UPGRADE
SAP EhPi: To upgrade from NW 7.0 to EhP1 for either ABAP or Dual but not for Java Stack.
SAINT: To upgrade from NW 7.0 to EhP1 for SolMan
JSPM: To upgrade from Java 7.0 to EhP1
SAPUp: To upgrade from Pre-NW 7.0 version to EhP1 (CU & UC is possible)
Note: As of April 21, 2011, SAPehpi 7.10 is replaced by Software Update Manager (SUM), note 1251735.
UPGRADE
UPGRADE
Step 1 Initialization
Checks Performed
ABAP or Java or Dual
Step 2 Extraction
EhP installation Key, Download Dir and DDIC password
Packages are extracted to Transport Dir
Kernel is copied to /EHPI/ABAP/EXENEW and
/EHPI/ABAP/EXE
Step 3 Configuration
Stack.xml to /usr/sap/trans/EPS/in
Step 4 Checks
Last step of the Installation Preparion
Prerequisites met (such as Disk space requirements)
New tablespaces and additional space for existing TS
Open or cancelled updates
Step 5 Preprocessing
REPACHK2 phase (lock the development environment)
Shadow Repository creation
Progress can be checked
(/EHPI/ABAP/tmp/DBCLONE<NO>.<SID>
Difference between SAPup and EHP installer
SAPup Export media of the upgrade export DVDs
EhPI -> Shadow tables from the basis tables of the original instance
DD modifications
ACT_UPG and SHADOW_IMPORT_INC
Step 6 Downtime
1) Switching the table and the kernel
~ tables are renamed
New kernel is copied
2) Table Conversion, main import and program execution
PARCONV_UPG
TABIM_UPG
XPRAS_UPG
Step 7 Postprocessing
SGEN
Background jobs scheduling
Step 8 Finalization
Ends the installation tool and SL Controller.
UPGRADE
UNICODE CONVERSION
Options Considered
Distribution Monitor
Expdp/Impdp option
SAP’s export/import method
ANXIETY
SMIGR_CREATE_DDL
Blog: http://www.sdn.sap.com/irj/scn/weblogs?blog=/pub/wlg/24399
ORA-00600 Errors
ANXIETY Contd…
ANXIETY Contd…
SCALABILITY
Distribution Monitor
Evaluate the system for "Drop before export/recreate after
import" secondary indexes of less critical but large ODS
tables. This way we could rebuild the indexes after turning
over the system to business for validation.
DUAL STACK SPLIT
Export content from Dual stack
Install Single Stack
Import content into Single stack system
Questions???
????
