Constant generation of Http Sessions

[Former Member]

Hallo,

Recently we did the upgrade to 7.4 (ECC and EP). After the upgrade from time to time there is build up of Http sessions.

The amount of sessions that are being created, if not manually terminated on time (SM04), start to block the whole system.

When started most of the times it takes an hour for it to stop generating sessions. Sometime sooner and sometime later.

The rdisp/plugin_auto_logout and rdisp/gui_auto_logout are both set to 3600.

I know there is not much info to go about but maybe somebody has experienced this behavior before.

If so how was it resolved?

Thank you!.

Kind Regards.

J

*** WARNING => IcmSendRq: resources of ABAP server exhausted

*** ERROR => IcmCreateDpRequest: Server overload

[mercedes_fernandez · Accepted solution]

Hello,

which kernel release / PL is the system running in?
see SAP Notes:

2170716 Remaining Plug-in sessions in SM04 for client 000
2129431 Avoid left-over SM04 session when sap-contextid is invalid

kind regards,
Mercedes

[Former Member · Accepted solution]

Hi Mercedes,

Thank you on your replay. The notes you provided only partly cover the issue.

I do notice several sessions Plug-In type in SM04 for client 000, user ID empty but the host is not a localhost it is always somebodies workstation. The most sessions are pure HTTP sessions there are only a few plugins. Next to all this the sessions after deleting them are constantly being regenerated.

If the sessions would not be deleted they would flood the system.

The kernel level is 742 UC patch 28. I'll try to patch the kernel.

Thank you.

Kind Regards,

J

[mercedes_fernandez · Accepted solution]

Hello,

do those sessions come from the same terminal / IP?
Which url are they executing? (technical data in SM04)
Does it occur in all the instances or just in an specific one?

thanks,
Mercedes

[Former Member · Accepted solution]

Hi Mercedes,

Yes all the sessions when started are always from the same terminal (ip address). But not necessarily for each startup the same IP. It occurs in all the instances. I just managed to reproduce the error. After staring HREIC t-code the browser starts up the Interaction Center (SICF service). If no further actions are done within the browser the session falls into time out and generation of HTTP sessions is immediately started and can be viewed in the SM04.

King Regards,

J

This is the technical view of one of the sessions.

logon    T63_U10273

state    LOGGED ON

type    DP_LOGON_PLUGIN

subType    DP_LOGON_HTTP_NORMAL

priority    normal priority

workerType    DIA

rfc_type    DP_RFC_TYPE_UNDEF

async_rfc    0

withDisplay    0

remoteSession    0

user   

term    xx.xxx.x.xx

client    000

iaddr (gui host)    0.0.0.0

recv_count    1

send_count    0

snc_count    0

auto_logout    -1

server_plugin_protocol    DP_PLUGIN_PROTOCOL_HTTP

server_plugin_state    1

em_hyper_hdl    7dff79cee50

page_blocks    0

uniqueLogonId    005056AE3DEC1ED59DFC458BBD6FE0D1

ext_logon_id    005056AE3DEC1ED59DFC458BBD6FE0D1

security_context_reference   

allowCreateMode    1

modeinfo[0].protocol    HTTP

modeinfo[0].session    T63_U10273_M0

modeinfo[0].blockSoftCancel    0

modeinfo[0].is_cancelled    0

modeinfo[0].task_type    THRT_TASK_PLUGIN

modeinfo[0].detachReason    DP_DETACH_REASON_NONE

modeinfo[0].cleanupMethod    DEFAULT_CLEANING

modeinfo[0].em_hdl    18

modeinfo[0].abap_state    DP_SES_DETACHED

modeinfo[0].em_state    DP_EM_DETACHED

modeinfo[0].page_blocks    0

modeinfo[0].resetReason    x0 =

modeinfo[0].act_enq_info    0

modeinfo[0].stat_trans_id    null

modeinfo[0].cpic_no    0

modeinfo[0].sessionType   

modeinfo[0].sessionAttributes   

modeinfo[0].last_wp    4

modeinfo[0].last_rq_id    rq_id 133682902

modeinfo[0].diatime    Wed Oct 21 12:55:00 2015

modeinfo[0].tcode   

modeinfo[0].lock    0

modeinfo[0].inspection_active    0

modeinfo[0].extendedSessionId    00063000005056AE3DEC1ED59DFC458BBD6FE0D1

modeinfo[0].uuidSessionId    005056AE3DEC1ED59DFC458BBD6FE0D1

modeinfo[0].dt_root_id    005056AE3DEC1ED59DFC45948F3E00D1

modeinfo[0].control_flags    0x0

modeinfo[0].programInfo   

modeinfo[0].imode    0

modeinfo[0].imode_info[0].asyncRec    0

modeinfo[0].requestsInQueue    0

[mercedes_fernandez · Accepted solution]

Hi,

are those sessions long running ones?
which value does it have the processing time? PROCTIMEOUT in the icm/server_port parameter?

thanks,
Mercedes

[isaias_freitas · Accepted solution]

Hello J,

If no further actions are done within the browser the session falls into time out and generation of HTTP sessions is immediately started and can be viewed in the SM04.

Looks like the SAP kernel is trying to end the idle session (as expected), but this is triggering the issue.

Which is the kernel release an patch level in use?

Kind regards,

Isaías

[Former Member · Accepted solution]

Hi Mercedes,

I have patched the kernel and it seems that the sessions are not generated anymore.

Thank you again.

Kind regards,

J.