APAR status
Closed as program error.
Error description
RDZ V8036 INTERNAL DEFECTS AND ENHANCEMENTS - OPENRSE
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: 01.RDz 8* users * * 02.RDz server administrators who have DNS * * issues on their servers and RDz users * * who are concerned with too many * * unnecessary log files. * * 03.RDz Users who use USS symbolic links * * 04.z/OS system administrator * **************************************************************** * PROBLEM DESCRIPTION: 01.During a disconnect, it's possible * * for a deadlock to occur. * * 02.When DNS settings are messed up, an * * NPE can occur with the server * * without a useful error message and * * .dstoreHashmap log entries can take * * up a lot of space. * * 03.Deleting a symbolic link for a * * folder from RSE deletes the folder * * contents. * * 04.RDz enhancement to allow TLS v1.2 * * usage * **************************************************************** * RECOMMENDATION: * **************************************************************** 01.When an RDz user disconnects from the server, it is possible (although rare) for the timing to be such that a deadlock can occur. In such scenarios, this can also result in locked datasets. 02.If a z/OS machine hasn't properly configured their DNS settings, an NPE can occur with the server. While there is already a workaround for this scenario, there is no message indicating to the administrator what might have gone wrong. The second issue is that .dstoreHashmap files can get frequently created in some scenarios and these files aren't very useful to users. 03.Deleting a symbolic link for a folder from RSE deletes the folder contents. 04.Rational Developer for System z enhancement to allow TLS v1.2 usage. To use TLS v1.2, define _RSE_JAVAOPTS="$_RSE_JAVAOPTS -DDSTORE_SSL_ALGORITHM=TLSv1.2" in rsed.envvars (host), and -DDSTORE_SSL_ALGORITHM=TLSv1.2 in eclipse.ini (client).
Problem conclusion
01.In order to avoid the deadlock, a synchronized block in the server code was removed. This is a change that had already gone into the RDz 9* versions. 02.The RSE server will attempt to fall back to reading the hostname via a shell command. If that fails then, a error message will indicate a problem and suggest the workaround. For .dstoreHashmap log entries will not get created by default and older ones will be deleted after a two days. 03.When a user deletes a symbolic link for a folder, the contents are not deleted. 04.Rational Developer for System z enhancement to allow TLS v1.2 usage. To use TLS v1.2, define _RSE_JAVAOPTS="$_RSE_JAVAOPTS -DDSTORE_SSL_ALGORITHM=TLSv1.2" in rsed.envvars (host), and -DDSTORE_SSL_ALGORITHM=TLSv1.2 in eclipse.ini (client).
Temporary fix
Comments
APAR Information
APAR number
PI22008
Reported component name
RD/Z HOST
Reported component ID
5724T0723
Reported release
801
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2014-07-16
Closed date
2015-04-21
Last modified date
2015-04-30
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Modules/Macros
FEKFDST0 FEKFDST2
Fix information
Fixed component name
RD/Z HOST
Fixed component ID
5724T0723
Applicable component levels
R801 PSY UI26951
UP15/04/30 I 1000
Fix is available
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Document Information
Modified date:
30 April 2015