This document describes how to operate a Natural Web I/O Interface server. Unless otherwise noted, the information below applies to all operating systems.
The following topics are covered:
Terminating the Natural Web I/O Interface Server under z/OS, z/VSE
Terminating the Natural Web I/O Interface Server under BS2000
Changing the SYSOUT File Assignment of the FSIO Task under BS2000
The Web I/O Interface server can be started as a "started task":
//NWOSRV PROC
//KSPSRV EXEC PGM=NATRNWO,REGION=4000K,TIME=1440,
// PARM=('POSIX(ON)/NWOSRV1')
//STEPLIB DD DISP=SHR,DSN=NWOvrs.LOAD
// DD DISP=SHR,DSN=NATvrs.LOAD
//CMPRINT DD SYSOUT=X
//STGCONFG DD DISP=SHR,DSN=NWOvrs.CONFIG(SRV1)
//STGTRACE DD SYSOUT=X
//STGSTDO DD SYSOUT=X
//STGSTDE DD SYSOUT=X
wherevrs represents the relevant product version of NWO or Natural.
Note:
PARM=('POSIX(ON)/NWOSRV1') - POSIX(ON) is
required for a proper LE370 initialization, and NWOSRV1 is the
name of the server for the communication with the monitor client.
The name of the started task must be defined under RACF and the z/OS UNIX System Services.
Under z/VSE, a prerequisite is a running SMARTS address space that is configured to run the Natural Web I/O Interface server (see Installing the Web I/O Server under z/VSE).
<msg-id> NATRNWO <server-id>
- where
msg-id is the
message identifier assigned to the SMARTS partition, and
server-id is the name of your Natural Web I/O Interface server.
141 NATRNWO NWOS1
Note:
If you qualify the Natural Web I/O Interface server data sets by
server-id, the server ID is restricted to a maximum
length of 6 characters.
Alternatively you can automatically start Natural Web I/O Interface
servers during SMARTS initialization by using the SMARTS SYSPARM parameter
STARTUPPGM. In the SMARTS SYSPARM file
specify:
STARTUPPGM='NATRNWO <server-id>'
STARTUPPGM='NATRNWO NWOS1'
Under BS2000, start the Natural Web I/O Interface server with the SDF command:
/ENT-PROCSTART-NWO
The SDF procedure START_NWO has to be supplied with the following parameters:
| Parameter | Definition | Default Value |
|---|---|---|
NWO-JOBS |
The NWO (SMA) job library. | NWOvrs.JOBS |
ENV-MOD |
The NWO environment-specific module library. This library contains the linked Natural nucleus module. | NWOvrs.JOBS |
NWO-MOD |
The NWO module library. | $SAG.NWOvrs.MOD |
NCF-MOD |
The Natural Com-plete interface module library. | $SAG.NCFvrs.MOD |
APS-LIB |
The SMARTS library (modules and procedures). | $SAG.APSvrs.LIB |
ADA-MOD |
The Adabas module library. | ADAvrs.MOD |
PROC-NAME |
The name of the NWO START procedure. The
procedure must reside in the NWO-JOBS library.
|
START-NWO |
NWO-CONFG |
The NWO configuration file. It must reside in the
NWO-JOBS library (Type S).
|
NWO-CONFG |
NWO-SYSPARM |
The SMARTS configuration file. It must reside in the
NWO-JOBS library.
|
NWO-SYSPARM |
NWO-ADAPARM |
The ADALNK parameter file
(IDTNAME, etc). It must reside in the NWO-JOBS
library.
|
NWO-ADAPARM |
LOG-FILE-PREFIX |
The log-file prefix for the SYSOUT files
of all SMARTS tasks.
|
L.NWO. |
WORKER-JOB-NAME |
The job name of the worker-tasks. | NWOWORK |
WORKER-JOB-CLASS |
The job class of the worker-tasks. | *STD |
WORKER-CPU-LIMIT |
The CPU time limit for the SMARTS worker tasks. | *NO |
LOGGING |
Switches logging for diagnostic purposes. | *NO |
MAIN-TASK |
For internal use only. Do not modify! |
Caution:
Do not modify the variable names and parameter names that
are used in the procedure START_NWO. This procedure is called
recursively to attach the worker-tasks. For this purpose, the
ENTERPARM string is internally executed and several variables are
read from the system, using the GETVAR function of
SDF-P.
Example procedure for entering the START-NWO
procedure:
/ENT-PROC ($SAG.APSvrs.LIB,START-NWO,J),( - / NWO-JOBS = $SAG.NWOvrs.JOBS, - / NWO-MOD = $SAG.NWOvrs.MOD, - / NCF-MOD = $SAG.NCFvrs.MOD, - / APS-LIB = $SAG.APSvrs.LIB, - / ADA-MOD = $SAG.ADAvrs.MOD.NWOvr, - / NWO-SYSPARM = NWO-SYSPARM, - / NWO-CONFG = NWO-CONFG, - / NWO-ADAPARM = NWO-DDLNKPAR, - / LOG-FILE-PREFIX = L.NWO.OUT.NWOS01.)
Under z/OS and z/VSE, the Natural Web I/O Interface server can be
terminated from within the Monitor Client NATMOPI, see
Monitor
Commands below.
The Natural Web I/O Interface server can be terminated with the console command:
/INTR <TSN smarts-main-task>,EOJ
The central logical system file SYSOUT written by the
FSIO task can be reassigned at SMARTS server execution time, using
the SDF procedure SHOW-SYSOUT.
Thus it is possible to look up trace outputs, error reports, etc., without having to terminate the server.
The procedure SHOW-SYSOUT has to be called with the
following parameters:
APS-LIB |
The SMARTS module library. |
TSN |
The TSN of the SMARTS server
main-task.
|
As a result of the SHOW-SYSOUT execution, the logical
system file SYSOUT of the FSIO task will be
reassigned to a new file and the previous one will be opened with the
SHOW-FILE command. The new logical system file
SYSOUT is built by appending a numerical suffix to the file name.
The value of the suffix is incremented by 1, each time SHOW-SYSOUT
is executed.
/CLP FROM-FILE=*LIBRARY-ELEMENT(LIBRARY=APSvrs.LIB,ELEMENT= SHOW-SYSOUT),PROCEDURE-PARAMETERS=(APS-IB=APSvrs.LIB,TSN=7445), LOGGING=*PARAMETERS"
To enable the administrator to monitor the status of the Natural Web I/O Interface server, a monitor task is provided which is initialized automatically at server startup. Using the monitor commands described below, the administrator can control the server activities, cancel particular user sessions, terminate the entire server, etc.
The following topics are covered below:
To communicate with the monitor, you can use the monitor client
NATMOPI; see Monitor Client NATMOPI.
Or you can use the HTML Monitor Client that
supports standard web browser, see HTML Monitor Client.
Under z/OS, you can alternatively use the operator command
MODIFY to execute the monitor commands described
below in the section Monitor Commands. The output of the
executed monitor command will be written to the system log.
F jobname,APPL=ping
sends the command ping to the Web I/O
Interface server running under the job
jobname.
The Natural Web I/O Interface server supports the following monitor commands:
| Monitor Command | Action |
|---|---|
ping |
Verifies whether the server is active. The server
responds and sends the string I'm still up |
terminate |
Terminates the server. |
| abort | Terminates the server immediately without releasing any resources. |
set
configvariable
value |
With the set command, you
can modify server configuration settings. For example, to modify
TRACE_LEVEL:
set TRACE_LEVEL 0x00000012 |
list sessions |
Returns a list of active Natural sessions within the server. For each session, the server returns information about the user who owns the session, the session initialization time, the last activity time and an internal session identifier (session-id). |
cancel session
session-id |
Cancels a specific Natural session within the Natural
Web I/O Interface server. To obtain the session ID, use the monitor command
list sessions.
|
help |
Returns help information about the monitor commands supported. |
For debugging purposes, the server code has a built-in trace facility which can be switched on, if desired.
The following topics are covered below:
Under z/OS and z/VSE, the Natural Web I/O Interface server writes
its runtime trace to
the logical system file SYSOUT of the
FSIO task.
Under z/OS, z/VSE and BS2000, the Natural Web I/O Interface server
writes its runtime trace to
the logical system file SYSOUT of
the FSIO task.
The trace is configured by a trace level which defines the details of the
trace. Once a trace is switched on, it can be restricted to particular clients
or client requests by specifying a trace
filter, see also Web I/O Interface server configuration parameter
TRACE_FILTER.
Every Natural session is provided with a 32-bit trace status word
(TSW) which defines the trace level for this session. The value of the TSW is
set in the Web I/O Interface server configuration parameter
TRACE_LEVEL.
A value of zero means that the trace is switched off.
Each bit of the TSW is responsible for certain trace information. Starting with the rightmost bit:
| Bit 31 | Trace main events (server initialization/termination, client request/result). |
| Bit 30 | Detailed functions (session allocation, rollin/rollout calls, detailed request processing). |
| Bit 29 | Dump internal storage areas. |
| Bit 28 | Session directory access. |
| Bit 27 | Dump send/reply buffer. |
| Bit 26 | Dump send/reply buffer short. Only the first 64 bytes are dumped. |
| Bit 25 | Dump I/O buffer. |
| Bit 24 | Dump I/O buffer short. Only the first 64 bytes are dumped. |
| Bit 23 | Call back gateway event. |
| Bit 22-17 | Free. |
| Bit 15 | Trace error situations only. |
| Bit 14 | Apply trace filter definitions. |
| Bit 13 | Trace start and termination of the server only. |
| Bit 12 | Trace start and termination of the client sessions only. Even if bit 13 is set. |
| Bit 11-01 | Free. |
| Bit 00 | Reserved for trace-level extension. |
Note:
Using trace levels 12 and 13 is only possible with Natural Web
I/O Interface Server Version 8.3.2.
It is possible to restrict the trace by a logical filter in order to reduce the volume of the server trace output.
The filter can be set with the configuration parameter
TRACE_FILTER.
The filter may consist of multiple keyword=filtervalue assignments separated by spaces.
To activate the filter definition, the trace bit 14 in the trace status word (see Trace Level) must be set.
The filter keyword is:
Client |
Filters the trace output by specific clients. |
The following rules apply:
If a keyword is defined multiple times, the values are cumulated.
The value must be enclosed in braces and can be a list of filter values separated by spaces.
The values are not case sensitive.
Asterisk notation is possible.
TRACE_FILTER="Client=(KSP P*)"
Each request of the user ID "KSP" and each request of the user IDs starting with a "P" are traced.