SAP Installation consists of 3 Types:
Additional application server instance(AAS).
1. Central Services Instance
2. Database Instance
3. Application server instance
Central Instance: This is the instance where all the services are configured and it manages all the instances through message server. CI is named as “DVEBMGS”00&instance number. The services of instance number are as follows:
D -> Dialog
V -> Update
E -> Enque
B -> Background.
M -> Message
G -> Gateway
S -> Spool
4. Go to dump
NT/386/sapinst.exe
5. Select central instance.
6. Specify the <SID> and instance number.
<SID> : System Identifier which is of 3 character and it should be unique in the landscape. It should not be either SAP , ERP or other reserve words. The main objective of <SID> is used to identify the Instance.
7. Specify the host name.
8. Specify the ORACLE home path.
9. Assign 60% of memory to CI. (for productive 70%(CI)+30%(DI))
10. Specify the path for usr directory C:,D:, or E….
11. Specify passwords for <SID>ADM, SAPSERVICE<SID>.
<SID>ADM: Is R/3 system administrator which is used to start & stop R/3 systems and has administrative privileges.
SAPSERVICE<SID>: This is a service user which is used to run all the SAP services like SAPOSCOL, SAP<SID>_<instance number>.
12. Specify kernel path.
13. Specify the Dispatcher/Gateway/Message server port numbers.
14. Continue installation.
Database Instance: As normal database instance accepts requests from central instance to fulfill the user's requests. As lock management system provided by enqueue server it will provide service to users.
1. Select Database Instance.
2. Specify SID, host name and Instance number.
3. Specify the installation on new database or use existing database.
4. Specify the database, SchemaID (SAP<SID>)
SchemaID: It is the owner of the database (SAPSR3 for As ABAP, SAPSR3DB for As JAVA).
5. Specify the memory 40% of physical memory.
6. Specify the log files location.
i) Mirror logA, OriglogB -> 1 disk
ii) OriglogA, Mirror Log -> 1 disk
Log files contain the changed data.
7. Specify the path of Kernel Directory.
8. Specify the path for SAP directory
[sapreorg, spacheck, sapbackup, saptrace, saparch, oraarch]
9. Specify the path for data directory.
[sapdata1, sapdata2….sapdata<n>]
10. Specify the export DVD/dump path.
11. Specify passwords for <SID>ADM and SAPSERVICE<SID>.
12. No. of parallel processors to expatiate the installation process.
13. Select MNLS [Multi National Language Support].
14. Specify passwords for system, sys, for DB etc.,
Dialog Instance: This is an additional application server which is to install and to provide more number of work processors to cater more number of users. (Provides additional memory and CPU). Dialog Instance is also called as Application Server and these application servers will be installed mostly in Production system only, in order to serve huge number of users.
1. Select the dialog instance.
2. Specify the CI. (Host name)
3. Specify the DI (Host name) (This is where data is stored).
4. Specify the host name and number
D<Instance number>
D01, D02……
5. Specify the kernel path.
6. Specify the passwords.
OLD=>>>>>>SAP System= Dialog Instance + Central Instance + Database Instance
NEW=>>>>>SAP System= Application Server Instance(PAS/AAS)+Central Services Instance+Database Instance
**Application server instances can be installed as Primary application server instance(PAS)Additional application server instance(AAS).
1. Central Services Instance
2. Database Instance
3. Application server instance
Central Instance: This is the instance where all the services are configured and it manages all the instances through message server. CI is named as “DVEBMGS”00&instance number. The services of instance number are as follows:
D -> Dialog
V -> Update
E -> Enque
B -> Background.
M -> Message
G -> Gateway
S -> Spool
4. Go to dump
NT/386/sapinst.exe
5. Select central instance.
6. Specify the <SID> and instance number.
<SID> : System Identifier which is of 3 character and it should be unique in the landscape. It should not be either SAP , ERP or other reserve words. The main objective of <SID> is used to identify the Instance.
7. Specify the host name.
8. Specify the ORACLE home path.
9. Assign 60% of memory to CI. (for productive 70%(CI)+30%(DI))
10. Specify the path for usr directory C:,D:, or E….
11. Specify passwords for <SID>ADM, SAPSERVICE<SID>.
<SID>ADM: Is R/3 system administrator which is used to start & stop R/3 systems and has administrative privileges.
SAPSERVICE<SID>: This is a service user which is used to run all the SAP services like SAPOSCOL, SAP<SID>_<instance number>.
12. Specify kernel path.
13. Specify the Dispatcher/Gateway/Message server port numbers.
14. Continue installation.
Database Instance: As normal database instance accepts requests from central instance to fulfill the user's requests. As lock management system provided by enqueue server it will provide service to users.
1. Select Database Instance.
2. Specify SID, host name and Instance number.
3. Specify the installation on new database or use existing database.
4. Specify the database, SchemaID (SAP<SID>)
SchemaID: It is the owner of the database (SAPSR3 for As ABAP, SAPSR3DB for As JAVA).
5. Specify the memory 40% of physical memory.
6. Specify the log files location.
i) Mirror logA, OriglogB -> 1 disk
ii) OriglogA, Mirror Log -> 1 disk
Log files contain the changed data.
7. Specify the path of Kernel Directory.
8. Specify the path for SAP directory
[sapreorg, spacheck, sapbackup, saptrace, saparch, oraarch]
9. Specify the path for data directory.
[sapdata1, sapdata2….sapdata<n>]
10. Specify the export DVD/dump path.
11. Specify passwords for <SID>ADM and SAPSERVICE<SID>.
12. No. of parallel processors to expatiate the installation process.
13. Select MNLS [Multi National Language Support].
14. Specify passwords for system, sys, for DB etc.,
Dialog Instance: This is an additional application server which is to install and to provide more number of work processors to cater more number of users. (Provides additional memory and CPU). Dialog Instance is also called as Application Server and these application servers will be installed mostly in Production system only, in order to serve huge number of users.
1. Select the dialog instance.
2. Specify the CI. (Host name)
3. Specify the DI (Host name) (This is where data is stored).
4. Specify the host name and number
D<Instance number>
D01, D02……
5. Specify the kernel path.
6. Specify the passwords.
No comments:
Post a Comment