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Multithreading issue on Solaris 8 branded zone

807559Sep 14 2009
Hi,

We are facing a multithreading problem in Solaris 8 container (branded zone) on Solaris 10.

The core file shows 2 LWPs for a single thread.

First LWP
---------------
(dbx) lwp
current LWP ($lwp) is l@1403
(dbx) print this->m_ThreadId->m_IdImpl.m_PosixId
this->m_ThreadId.m_IdImpl.m_PosixId = 1404U

Second LWP
-------------------
(dbx) lwp
current LWP ($lwp) is l@1404
(dbx) print this->m_ThreadId->m_IdImpl.m_PosixId
this->m_ThreadId.m_IdImpl.m_PosixId = 1404U

Another point to note is that dbx returns 'MT support is disabled' for this program even though it has been built using the -mt option. The dbx version is Sun Dbx Debugger 7.5 2005/10/13.

As far as I have read, the Solaris 8 branded zone uses the alternate T2 thread library. Note also that this program is linked with the alternate thread library @ /usr/lib/lwp.

This alternate thread library is supposed to use the 1:1 thread model.
Can someone explain why are we then seeing 2 LWPs for a single thread ?

Thanks,
Best regards,
Raj Iyer

Comments

John_K

I don't believe Act As is supported when using EBS authentication, primarily because you would need to go back and reinitialize your EBS session. I.e. you might have an initblock which does:

Select organization_id from hr_organization_units.

As that is a secure view, it is dependent on your EBS context (i.e. your user_id, resp_id, and so on). So you couldn't run that "Acting As" someone else.

ather.shaikh

Hi ORA-01033,

I understand that and that's why i raised this question on the community.

We need to implement only 4 or 5 user for this. is there any we can do this.

Thanks,

Ather

2725705

Hello,

We are getting issue while accessing the OBIEE from EBS . we are getting Obiee login page instead of direct dashboard page.

Could you please share your experience on this issue

ather.shaikh

What i understand that you did not set the configuration files updated.

authenticationschema.xml should have these

<AuthenticationSchema name="EBS-ICX"

<SchemaKeyVariable source="cookie" forceValue=”EBS-ICX”

<RequestVariable source="cookie" type="auth" nameInSource="DEV" biVariableName="NQ_SESSION.ICX_SESSION_COOKIE" />

if it is OBIEE 12c then you have mentioned following as well.

<RequestVariable source="constant" type="auth" nameInSource="ssi" biVariableName="NQ_SESSION.SERVICEINSTANCEKEY" />

2725705

Hi Shaikh,

We have followed all the steps and modified config files as per Oracle documents, what ever steps you mentioned above all are taken care of.

Please let me know any other solution

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Locked on Oct 12 2009
Added on Sep 14 2009
#oracle-solaris, #solaris-zones
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