Rebuild our XI application server from Single stack to dual stack

[Former Member]

Hello,

We currently have an XI landscape with two application servers, the CI is of course a dual stack system, however the two app servers are single stacked, however we would like to make the two app servers into DUAL STACKs, my first guess was to rebuild the two apps from scratch and reinstall them as a dual stack apps. My Q is:

First: Do we need to rebuild both app servers, or can we make a change to the app servers to modify them to become dual stacked

Second: If we do need to rebuild both these apps, is there a specific document available to do this on Market place for installing a Dual stack app servers with PI?

Thanks in advance.

Sam

<Moved from SAP PI Forum>

Edited by: Prateek Raj Srivastava on May 13, 2010 12:27 PM

[Former Member · Accepted solution]

Hi Sam,

Maybe you should check if your app server was installed as dual stack first? e.g. if you can can find j2ee directory under your instance directory. then probably you can enable J2EE stack without reinstall it. please refer to the note 741289 for the parameters.

You might also need consider about Load balancing when you have multiple j2ee instance for PI , and you have to understand your integration scenarios very well. you can refer to the following document though it's for PI 7.1

http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/c02f072f-3799-2c10-e0b8-d98d323c0...

Cheers,

Denny

[Former Member]

Hello,

Thank you all for your feedback,

Denny Liao, it is very interesting question you implied, we do have a J2EE directory created under the /usr/sap/SID/D30 directory:

/usr/sap/XQ9/D30

mqaapz28:xq9adm 13% ls -ltr

total 36

drwxr-xr-x 7 xq9adm sapsys 96 Aug 24 2009 igs

drwxr-xr-x 9 xq9adm sapsys 1024 Aug 24 2009 j2ee

drwxr-xr-x 2 xq9adm sapsys 1024 Nov 11 2009 sec

drwxr-xr-x 3 xq9adm sapsys 1024 Nov 24 10:48 log

obviously this app server does not have any (jlaunch/jcontrol process running) therefore it is not running as dual stacked. but interestingly enough I do see logs in the

/usr/sap/XQ9/D30/j2ee/cluster/server0/log directory created at the time of the initial install. and under:

/usr/sap/XQ9/D30/j2ee/cluster

mqaapz28:xq9adm 29% ls -ltr

total 30

drwxr-xr-x 2 xq9adm sapsys 1024 Aug 24 2009 bootstrap

-rw-rr 1 xq9adm sapsys 39 Aug 24 2009 version.bin

-rw-rr 1 xq9adm sapsys 6339 Aug 24 2009 instance.properties.vmprop

-rw-rr 1 xq9adm sapsys 3676 Aug 26 2009 instance.properties

drwxr-xr-x 7 xq9adm sapsys 1024 Aug 26 2009 dispatcher

drwxr-xr-x 11 xq9adm sapsys 1024 Aug 26 2009 server0

as per the note you mentioned above (741289 ) this explains how to recover a lost J2EE parameter setup, I am guessing this can be simply followed and re-enable the app server to run as a dual stack.

also my system information for the J2EE on the CI is:

System XQ9

Find other systems in SLD... Message Server

Host: mcsapxq9j

Port: 3924

Enqueue Server

Host: mcsapxq9j

Port: 3224

Database

Name: XQ9

Host: mcsapxq9dbx

Type: Oracle (Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bit Production With the Partitioning and Data Mining options)

Software Components all components...

Name Version Applied

sap.com/SAP-JEECOR 7.00 SP21 (1000.7.00.21.0.20091214121410) 20100506125119

sap.com/SAP-JEE 7.00 SP21 (1000.7.00.21.0.20091214121301) 20100506124943

Licenses

Installation Number *** not yet assigned ***

System Number *** not yet assigned ***

Software Product Days Until Expiry

Download system configuration

Instance mqacsz27_XQ9_30 All processes running

Host: mqacsz27

OS: SunOS (sparcv9) 5.10

dispatcher Running

VM system properties...

PID: 21384

Name: Java HotSpot(TM) 64-Bit Server VM

Vendor: Sun Microsystems Inc.

Version: 1.4.2_21-b03

VM Parameters

Cluster

Node ID: 301932700

Kernel Version: 7.00 PatchLevel 76340.450

HTTP Port: 53000

HTTPS Port: 53001

P4 Port: 53004

Telnet Port: 53008

Info for crashes of this node

server0 Running

VM system properties...

PID: 21394

Name: Java HotSpot(TM) 64-Bit Server VM

Vendor: Sun Microsystems Inc.

Version: 1.4.2_21-b03

VM Parameters

Cluster

Node ID: 301932750

Kernel Version: 7.00 PatchLevel 76340.450

Info for crashes of this node

SDM Running

VM

PID: 21400

SDM Port: 53018

So: besides setting up the parameters in the above Note and consider the Load balancing, as there any other major setups required to start this app server as a dual stacked instance?

Thanks in advance.

SAM

Edited by: SAM_ONE on May 14, 2010 3:45 AM

Edited by: SAM_ONE on May 14, 2010 3:55 AM

[Former Member]

Hello,

Thank you all for your feedback,

Denny Liao, it is very interesting question you implied, we do have a J2EE directory created under the /usr/sap/SID/D30 directory:

/usr/sap/XQ9/D30

mqaapz28:xq9adm 13% ls -ltr

total 36

drwxr-xr-x 7 xq9adm sapsys 96 Aug 24 2009 igs

drwxr-xr-x 9 xq9adm sapsys 1024 Aug 24 2009 j2ee

drwxr-xr-x 2 xq9adm sapsys 1024 Nov 11 2009 sec

drwxr-xr-x 3 xq9adm sapsys 1024 Nov 24 10:48 log

obviously this app server does not have any (jlaunch/jcontrol process running) therefore it is not running as dual stacked. but interestingly enough I do see logs in the

/usr/sap/XQ9/D30/j2ee/cluster/server0/log directory created at the time of the initial install. and under:

/usr/sap/XQ9/D30/j2ee/cluster

mqaapz28:xq9adm 29% ls -ltr

total 30

drwxr-xr-x 2 xq9adm sapsys 1024 Aug 24 2009 bootstrap

-rw-rr 1 xq9adm sapsys 39 Aug 24 2009 version.bin

-rw-rr 1 xq9adm sapsys 6339 Aug 24 2009 instance.properties.vmprop

-rw-rr 1 xq9adm sapsys 3676 Aug 26 2009 instance.properties

drwxr-xr-x 7 xq9adm sapsys 1024 Aug 26 2009 dispatcher

drwxr-xr-x 11 xq9adm sapsys 1024 Aug 26 2009 server0

as per the note you mentioned above (741289 ) this explains how to recover a lost J2EE parameter setup, I am guessing this can be simply followed and re-enable the app server to run as a dual stack.

also my system information for the J2EE on the CI is:

System XQ9

Find other systems in SLD... Message Server

Host:

Port: 3924

Enqueue Server

Host:

Port: 3224

Database

Name: XQ9

Host:

Type: Oracle (Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bit Production With the Partitioning and Data Mining options)

Software Components all components...

Name Version Applied

sap.com/SAP-JEECOR 7.00 SP21 (1000.7.00.21.0.20091214121410) 20100506125119

sap.com/SAP-JEE 7.00 SP21 (1000.7.00.21.0.20091214121301) 20100506124943

Licenses

Installation Number *** not yet assigned ***

System Number *** not yet assigned ***

Software Product Days Until Expiry

Download system configuration

Instance XQ930 All processes running

Host:

OS: SunOS (sparcv9) 5.10

dispatcher Running

VM system properties...

PID: 21384

Name: Java HotSpot(TM) 64-Bit Server VM

Vendor: Sun Microsystems Inc.

Version: 1.4.2_21-b03

VM Parameters

Cluster

Node ID: 301932700

Kernel Version: 7.00 PatchLevel 76340.450

HTTP Port: 53000

HTTPS Port: 53001

P4 Port: 53004

Telnet Port: 53008

Info for crashes of this node

server0 Running

VM system properties...

PID: 21394

Name: Java HotSpot(TM) 64-Bit Server VM

Vendor: Sun Microsystems Inc.

Version: 1.4.2_21-b03

VM Parameters

Cluster

Node ID: 301932750

Kernel Version: 7.00 PatchLevel 76340.450

Info for crashes of this node

SDM Running

VM

PID: 21400

SDM Port: 53018

So: besides setting up the parameters in the above Note and consider the Load balancing, as there any other major setups required to start this app server as a dual stacked instance?

Thanks in advance.

SAM

[Former Member]

Try to check in your abap stack in rz10 instance profile for your Dialog instance .

In any case you will not have only ABAP dialog instance on ABAP+JAVA installation (try to read inst guide).

Check this parameters -->

rdisp/j2ee_start

rdisp/j2ee_start_control

Set both to 1 and restart instance.

Regards.

[Former Member]

Hi Sam,

Please refer to the installation guide for your XI version and there you will find the instructions. Or tell us your XI version.

Regards,

Shitij

[prateek]

I hope your ABAP stack is > 6.20 version. If yes, then Java can be installed as AddIn on your current abap server. This question would be better answered in NetWeaver Platform/Administrator forum.

Regards,

Prateek