How to release integrated ITS session memory ?

[Former Member]

Hello,

Sap release : ECC6 SP12

Integrated ITS 7.00

We receive incoming requests to our SAP server from an EP6 portal. The "SAP Gui for HTML" sessions are then displayed in SM04/SITSPMON transactions.

From yesterday, we had the following erreor mesage, every time a user is lauching a new request :

ITS, New user session denied due to memory bottleneck.

ITS, User session could not be created

Transaction Canceled ITS_P 027 ( )

We found in SM04, that a user that was no more connected , was still displayed using 3Gb of memory ...

The user sessions has been killed in sm04, and the user session is no more displayed, but still the memory bottleneck stills avoid any ITS connection.

In transaction SITSPMON, the session is still here

9427

Session - Memory Used

-

---

Session

Memory Type

Peak

Memory

Total

Current

-

---

9427

Session Memory

782.370.074

782.370.074

8.793.685

2.976.865

-

---

Sess. & Templ. 782.825.098 Bytes

Amount of em/global_area_MB used (1024 MB)

Sessions: 1 782.370.074 Bytes 782370.074 Bytes/Session

How can I release the memory, without having to shutdown the sap server ?

thank you !

Any useful help would be appreciated.

Regards.

[Former Member · Accepted solution]

Hi,

I don't have an idea what has happened here. Something seems to be

broken totally. I cannot imagine an IAC consuming 782.370.074 Bytes.

Are you able to reproduce this issue? I suggest to create an OSS

ticket.

best regards

Tobias

[Former Member · Accepted solution]

Hi Tobias,

Thank you for answering.

We already had the same issue two months ago, but as the problem couldn't be reproduced, SAP was unable to help us ..

Anyway, I've recreated an SAP message concerning this ITS bottleneck ..but I don't have a lot of hope.

Regards.

[Former Member · Accepted solution]

Hi,

the problem is the huge amount of memory allocated from this

session. The memory bottleneck is a result of that.

Please try to find out what the user of this session has done. Then

we would be able to help you; I never saw such a situation

regards Tobias

[Former Member · Accepted solution]

Hello,

After further analysis, I've found out that the user of that session has generated a short dump when the ITS bottleneck occured :

Runtime Errors SYSTEM_CORE_DUMPED

User and Transaction

Client.............. 200

User................ "J544362"

Language Key........ "S"

Transaction......... "IW40 "

Transactions ID..... " "

Program............. "SAPLOLEA"

Screen.............. "RIAUFK10 0100"

Screen Line......... 0

Information on Caller ofr "HTTP" Connection:

Plug-in Type.......... "HTTP"

Caller IP............. "xxxxxxxxxxxxxxxxxx"

Caller Port........... 8000

Universal Resource Id. "/sap/bc/gui/sap/its/webgui/~flNUQVRFPTIwNDQwLjAy

wOA=="

Information on where terminated

Termination occurred in the ABAP program "SAPLOLEA" - in

"AC_FLUSH_CALL_INTERNAL".

The main program was "RIAUFK10 ".

In the source code you have the termination point in line 224

of the (Include) program "LOLEAU10".

********************************************************************

Before that, the same day , many other dumps have been generated, they're all the related to the ITS :

******************************************************************

Runtime Errors MESSAGE_TYPE_X

Error analysis

Short text of error message:

The dataset (222.056.640 bytes) is too big (abap/alvgrid/size_nodod_mb)

Long text of error message:

Diagnosis

The system tried to send a data record to the frontend, which

contains 222.056.640 bytes. However, the data volume has been

restricted to 52.428.800 bytes.

System Response

The current application program has been terminated with a runtime

error.

Procedure

Restrict the data selection if possible or contact your system

administrator.

Procedure for System Administration

The maximum size of these data volumes can be set using the kernel

parameter 'abap/alvgrid/size_nodod_mb' (in mega bytes).

Technical information about the message:

Message class....... "AWRT"

Number.............. 000

Variable 1.......... "222.056.640"

Variable 2.......... "52.428.800"

Variable 3.......... " "

Variable 4.......... " "

User and Transaction

Client.............. 200

User................ "J544362"

Language Key........ "S"

Transaction......... "IW39 "

Transactions ID..... " "

Program............. "SAPLAWRT"

Screen.............. "SAPLSLVC_FULLSCREEN 0500"

Screen Line......... 3

Information on Caller ofr "HTTP" Connection:

Plug-in Type.......... "HTTP"

Caller IP............. "xxxxxxxxxxx"

Caller Port........... 8000

Universal Resource Id. "/sap/bc/gui/sap/its/webgui/~flNUQVRFPTExMTYuMDIxLjA3LjA

3===="

Information on where terminated

Termination occurred in the ABAP program "SAPLAWRT" - in

"ITS_CHECK_ALV_DATA_SIZE".

The main program was "RIAUFK20 ".

In the source code you have the termination point in line 25

of the (Include) program "LAWRTU22".

Line SourceCde

1 FUNCTION its_check_alv_data_size.

2 *"----

---

3 ""Lokale Schnittstelle:

4 *" TABLES

5 *" DATA_TABLE TYPE TABLE

6 *"----

---

7

8 * DATA n TYPE i.

9 DATA currsize TYPE i.

10 STATICS maxsize TYPE i.

11 DATA par_value(56).

12 IF maxsize IS INITIAL.

13 sy-subrc = 0.

14 CALL 'C_SAPGPARAM' ID 'NAME' FIELD 'abap/alv

15 ID 'VALUE' FIELD par_valu

16 IF sy-subrc NE 0.

17 maxsize = 52428800. " Default 50 MB

18 ELSE.

19 maxsize = 1048576 * par_value.

20 ENDIF.

21 ENDIF.

22 DESCRIBE TABLE data_table. " LINES n.

23 currsize = sy-tfill * sy-tleng.

24 IF currsize GT maxsize.

>>>>> MESSAGE x000 WITH currsize maxsize.

26 ENDIF.

27

28 ENDFUNCTION.

Thank you for your help.

Regards.

Edited by: Indus COMPAS on Feb 4, 2008 3:39 PM

[Former Member · Accepted solution]

Hi,

that's it. And after reading the text of the dump carefully this statement will attract

attention:

The maximum size of these data volumes can be set using the kernel

parameter 'abap/alvgrid/size_nodod_mb' (in mega bytes).

But this does not declare the reason why the session memory cannot be

released.

best regards

Tobias

[Former Member]

Have you found out the reason why this is not releasing memory ?

I have similar prolbem - SITSPMON shows "currently available to ITS - 0 of 512MB"

WP0(10) Malloc Mem. 245,829,458 245,746,128 53,576 3,823

WP0(10) Shared (EG) 527,385,100 525,926,620 129,066 64,005

WP1(10) Malloc Mem. 0 0 0 0

even after bounce WP0, the memory still does not get released. users getting -

<ErrorMessage>New session was refused due to memory bottleneck</ErrorMessage>

<Date>20080428</Date>

<Time>121625</Time>

this is ECC 6.0 (basis 700) kernel patch 133.

thanks..Patrick

[Former Member]

Hi ,

Any solution for this problem .

Thanks

suneel

[Former Member]

Hi all,

I am facing the same problem in one Productive system... I found the SAP Note 742048. It explains how to calculate the required memory for the Integrated ITS.

Hope can be useful!

Bye,

José