What is a spool in JCL?
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What is a spool in JCL?
As noted previously, spooling provides simultaneous processing and a temporary storage area for work that is not yet completed. When JES2 reads a job into the system, JES2 writes the job, its JCL, its control statements, and its data to a spool data set until further processing can occur.
How do I clear my mainframe spool?
Use the *F CONFIG command to delete the spool data set (recommended). The command moves the initialization files to other spool data sets. Use a hot start with refresh with the original set of spools (while the spool to be deleted is in drained status). Then, do another hot start with refresh to delete the spools.
What is Sdsf in mainframe?
System Display and Search Facility (SDSF) is a utility that allows you to monitor, control, and view the output of jobs in the system.
What does spool mean in software?
simultaneous peripheral operations online
To spool (which stands for “simultaneous peripheral operations online”) a computer document or task list (or “job”) is to read it in and store it, usually on a hard disk or larger storage medium so that it can be printed or otherwise processed at a more convenient time (for example, when a printer is finished printing …
What are spool files?
A spooled file holds output data until it can be printed. The spooled file collects data from a device until a program or device is able to process the data. A program uses a spooled file as if it were reading from or writing to an actual device.
How do I delete a spool job?
On the Spool page, click the button for the queue that contains the jobs. Click the check box to the left of the Display button. This selects all the jobs in the queue. Click Delete.
How do I find spool jobs?
for seeing spool,
- go to ispf main panel.
- there u will find the sdsf option.
- otherwise u can find spool as by giving =s.st in command line.
- or, give as “tso sdsf st” in command line. Back to top.
What does spool mean in SQL?
The “spool” command is used within SQL*Plus to direct the output of any query to a server-side flat file. SQL> spool /tmp/myfile.lst. Becuse the spool command interfaces with the OS layer, the spool command is commonly used within Oracle shell scripts.
How to transfer data from a spool to a dataset?
Many a times we need the data sitting in spool to be transferred to a dataset. We might be researching on that data or the client might be looking for that data. To take care of such requests we can make use of any of the two approaches described here 1. Goto Spool 2. Give XDC against the jobname, 3.
What is the use of spool in SQL?
Answer: The SPOOL command causes SQL*Plus to write the results to a file on the operating system. SQL> spool /tmp/myfile.lst Once spool is set, SQL*Plus will continue to spool the output until the command SPOOL OFF. The spool command is very useful when you want to generate SQL from the data dictionary.
What is the spool parameter used for?
To display the status and percent utilization of a specified spool volume or all spool volumes. Displays the size and starting track for each SPOOL data set on this volume. In the event that a SPOOL data set has to be reallocated on another volume, this parameter provides the SPACE (ABSTR, size, start) values for the submitted JCL.
What is the default extension for spool?
If you do not specify an extension, SPOOL uses a default extension (LST or LIS on most systems). The extension is not appended to system files such as /dev/null and /dev/stderr.