WebSphere Application Server V7.0: Concepts ... - IBM Redbooks

14.6.4 Resource Access Control Facility (RACF) integration
FRCA services can be restricted. If access is restricted (the SERVAUTH class
and the FRCA resource are defined) in your environment, then WebSphere
Application Server must be granted access.
If the access is restricted, the message seen in Example 14-2 will be issued.
Example 14-2 FRCA access denied message
BBOOnnnnE FRCA INITIALIZATION FAILED. SERVER NOT AUTHORIZED TO USE FRCA
SERVICES. IOCTL RV=%d, RC=%d, RSN=%08X
The RACF command in Example 14-3 enables access to the FRCA services.
Example 14-3 RACF command to enable FRCA service
PERMIT EZB.FRCAACCESS.your_system_name.your_TCPIP_procname CLASS
(SERVAUTH) ID (your_control_reggion_userid) ACCESS (READ)
SETROPTS RACLIST (SERVAUTH) REFRESH
14.7 Thread Hang Recovery
14.7.1 Overview
This section describes the new Thread Hang Recovery option available on z/OS.
WebSphere Application Server for z/OS V7.0 contains a new technique called
Thread Hang Recovery. A hung thread will end up with one of the following
situations:
► It simply hangs around, only blocking threads and application environment
resources, such as connections, tables, and so forth.
► It ends in a loop state, not only blocking other resources but in addition
consuming CP or zAAP resources. What kind of processor is being used
depends on whether a zAAP is available at all and in what step of the
application the error occurs.
Thread Hang Recovery directly addresses both of these issues. It allows you to
define actions that should be started if a timeout occurs.
It allows you to specify thresholds for processor usage and actions that should be
performed if a single request exceeds this value. This is of real value if your
452 WebSphere Application Server V7.0: Concepts, Planning, and Design