Kernel version for my sp levels

[benoit-schmid]

Hello,

I am running SAP server 6.40 on Solaris (64bit EX2 for Oracle) with 327 Kernel Version.

I have work processes that crash when executing a specific abap program.

As it may take time before sap dev support find the bug, I would like to test

with an old kernel (319) on my DEV system.

I would like to ensure that my support packages can run with the 319 Kernel.

Where could I find the minimum version of kernel needed by a support package level?

Thanks in advance for your answer.

[Former Member]

If any dependency occur then SPAM will notify you it gives error to update the kernel before applying any new SP but in your case you already did SP upgrade better you search for the error message in dev_wn when the wp crash with SAP notes or raise SAP message if you didn't find any clue.

Regards;

[benoit-schmid]

Hello,

I have already opened a call for the bug.

But my question is for exemple:

Do I have a way to know which kernel version is needed fro HR 5.00 SP 79?

Regards,

[Former Member]

While defining the queue the patch SAPM will show you one note about known problems.

There is nothing like about pre-requsists, but SAP recommends to have a latest patches. But I always do SAP release -1 (one patch lower) patch. There is a link Info for each SPs please go through but I am sure nothing will be mentioned about kernel patch.

I think the note is Note 672651 - OCS: Known problems with Support Packages in Basis Rel.6.40.

[benoit-schmid]

Hello,

I have looked in note 672651.

But it does not help me to find out the minimum kernel version needed for my SPs.

Thanks in advance for your help.

[Former Member]

There is no document about the query you have but see below from the note 672651, hope this will clear your doubt.

SAP recommendation: We strongly recommend that you always import the latest version of the SPAM/SAINT update before you import any other Support Packages.

We recommend that you download the latest versions of the tp and R3trans executables from SAP Service Marketplace (see Note 19466).

[former_member204746]

why intsall an older kernel when SPA release a new kernel once every week?

try installing the latest kernel instead.

[benoit-schmid]

Hello,

It is because we are suscpecting the new kernel and the old one is still available on my systems.

Regards,

[Former Member]

How you suspected that? check whats your disp+work version under

/sapmnt/<SID>/exe

/usr/sap/<SID>/<instnace>/exe

[benoit-schmid]

Hello,

This program was not causing our work process to crash in the past.

This is why I suspect the new kernel.

Regards,

[Former Member]

>>This program was not causing our work process to crash in the past.

what you mean?

[benoit-schmid]

Hello,

I mean that now we have the unix work process that generate a core (at the Unix level).

This happen when we are compiling an abap program.

In the past the compilation did not cause a core dump of the unix sap kernel work process.

Is it clear?

Regards,

[Former Member]

Is the core dumps for all the programs or a specific programs? is this for locally developed?

Any specific reason for using 327 kernel? I can see there is a latest kernel available on marketplace 347 version, have you tried to installed?

[benoit-schmid]

> Is the core dumps for all the programs or a specific programs? is this for locally developed?

The core is for the compilation of a specific locally developped program.

Whatever a work process should never do a core dump.

> Any specific reason for using 327 kernel? I can see there is a latest kernel available on marketplace 347 version, have you tried to installed?

The reason is that 347 was not available when I upgraded.

[Former Member]

Yes, Work process should not core dump.

Now you have two options, 1) Upgrade kernel 327

2) Raise a OSS message with SAP.

[benoit-schmid]

>

> Yes, Work process should not core dump.
> Now you have two options, 
> 1) Upgrade kernel 327
> 2) Raise a OSS message with SAP.

Hello,

The OSS message has been opened last week.

The other options are also to downgrade as we suspect that it is a new bug.

This is why I have posted my original question.

Do I have a way to find out if it is ok to run HR 5.00/SP 79 with Kernel 327?

Another option is to upgrage only the dispatcher & work process as I can get a version above 347:

dw_355-10004725.sar

But I am not very familiar with these upgrades.

Can I use dw_355 with my 327 other binaries?

See you,

[Former Member]

Downgrade to old kernel I will not advice. You have following options.

- Upgrade only dw_355-10004725.sar as you suggested. Should work with lower version of other binaries.

- Upgrade complete kernel to 347 patch.

I suggest you should upgrade complete kernel to 347 patch. There is one note on how to upgrade kernel on UNIX.

There are also blogs on sdn where you can find a detailed procedure.

follow Note 19466 - Downloading SAP kernel patches

[benoit-schmid]

Hello,

Thanks for your advice.

And concerning, my original question, would you have an answer.

Do I have a way to know if SPA HR 5.0/SP 79 can run on 319 Kernel?

Thanks in advance for your answer.

[Former Member]

Should work.

As support pack genrally uses tp, R3trans & R3load. If you want you can also upgrade your tp, R3trans & R3load files, no downtime requires to upgrade these files.

[benoit-schmid]

Thanks Sunil, for your answer.

But how do you know that it should work.

What have you used to conclude that HR 5.00/SP 79 should work with 319 Kernel.

I would like to be able to answer this question on my own next time.

This is why I ask you which method you have used to conclude that it should work

Thanks in advance for your answer.

[Former Member]

There is no note where it mentioned what support pack you should have for each application patches. The thumb rule is to apply latest kernel or at-least upgrade tp, R3trans & R3load.

Generally support pack should go, but if you have any issue and open an OSS message the SAP always first request to upgrade kernel or latest patches for above 3 files.

The note (known problem) which I have given earlier should have the update if any Support pack requiries any specific kernel patches.

[benoit-schmid]

Hello,

Thanks for these answers.

Regards,

[Former Member]

If you installed a support package stack then there is a SAP recommendation which kernel version should be used with that SP stack. I suggest you do not use a kernel level below that recommended version as it may only cause more trouble.

Additionally it won't help to find a solution for your problem as you bring in a new possible source of error. Therefore leave the kernel at its current level until the source for your problems is located.

Kind regards,

[benoit-schmid]

Hello,

I did not find this minimum kernel version in the note I have read.

For example, I user HR 5.00 SP 79.

Could you please help me to find out which kernel version is needed for this SP?

Thanks in advance for your answer.