PI13281: CALL NAME SERVER LOCALLY IN CLUSTERED ENVIRONMENT IN ORDER TO PREFER LOCAL EJB CALL.

Fixes are available

APAR status

Closed as program error.

Error description

In a clustered environment a list of possible servers is
returned from the naming service for construction of  the
resolve initial reference value.   Adding logic to check for a
local reference in the list and using that local reference
gives preference that the ejb will be dispatched locally.

Local fix

```
n/a
```

Problem summary

****************************************************************
* USERS AFFECTED:  All users of z/OS IBM WebSphere             *
*                  Application Server V7.0, V8.0, and V8.5.    *
****************************************************************
* PROBLEM DESCRIPTION: WebSphere Application Server for z/OS   *
*                      does not prefer to resolve object       *
*                      URLs, such as those used for naming     *
*                      lookups, to a local server, if one      *
*                      exists.                                 *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
If one WebSphere Application Server for z/OS server is looking
up a JNDI name in a cluster, the naming code uses an object
URL to locate a member of the cluster to resolve the lookup
to.  When resolving the object URL, the intent is to resolve it
to a local server if possible, but the current code does not do
this.  Instead, the object URL is resolved in sequential
order, such that resolution to the first address in the URL is
tried first, regardless of whether that address is local or
remote.

Problem conclusion

The code that resolves object URLs was changed to prefer to
resolve the URL locally, if possible.  Resolution is
attempted first to all local address.  If the local address
cannot be reached (for example, if the target server isn't
started on the local machine), remote addresses in the URL are
then tried.

APAR PI13281 requires a change to documention.

NOTE: Periodically, we refresh the documentation on our Web
site, so the changes might have been made before you read this
text. To access the latest on-line documentation, go to the
product library page at:

http://www.ibm.com/software/webservers/appserv/library

The following changes to the WebSphere Application Server
Version 7.0 Information Center will be made available inr
June, 2014.

The topic "Application server custom properties for z/OS" will
be updated to include the following description of the new
custom property:

protocol_iiop_resolve_object_url_local

Specifies whether or not the application server should resolve
object URLs to a server that is local to the LPAR, if possible.
By default, the object URL is processed in order and the first
server that can be reached is chosen.
When this property is set to 1, any servers local to the LPAR
are checked first and only if none of those servers are
reachable will resolution be attempted to a remote server.

Data Type  Integer
Default  0
Acceptable values  0 or 1

APAR PI13281 is currently targeted for inclusion in
Service Level 7.0.0.33, 8.0.0.9, 8.5.5.3 of WebSphere
Application Server.

Please refer to URL:
//www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
for Fix Pack availability.

Temporary fix

Comments

APAR Information

APAR number
PI13281
Reported component name
WEBSPHERE FOR Z
Reported component ID
5655I3500
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2014-03-07
Closed date
2014-05-27
Last modified date
2014-07-01

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name
WEBSPHERE FOR Z
Fixed component ID
5655I3500

Applicable component levels

R700 PSY UI18561
UP14/06/21 P F406

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022

Tips

PI13281: CALL NAME SERVER LOCALLY IN CLUSTERED ENVIRONMENT IN ORDER TO PREFER LOCAL EJB CALL.

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name

Fixed component ID

Applicable component levels

R700 PSY UI18561

Fix is available

Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

Document Information

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