What is a PARMLIB?
PARMLIB is a required partitioned data set that contains control parameters for the whole system. PARMLIB is an important data set in a z/OS operating system, and can be thought of as performing a function similar to /etc on a UNIX® system.
What is Parmlib concatenation?
The parmlib concatenation is a set of up to 16 partitioned data sets defined through PARMLIB statements in the LOADxx member of either SYSn.
Which member of SYS1 Parmlib contains system console authorization definitions?
CONSOLxx (console configuration definition)
What is system library in JCL?
This library contains JCL procedures distributed with z/OS. In practice, there are many other JCL procedure libraries (supplied with various program products) concatenated with it. SYS1. PARMLIB. This library contains control parameters for z/OS and for some program products.
What is Sysres volume in mainframe?
Typical organization of software. The z/OS software– as supplied by IBM– is usually installed on a series of disk volumes known as the system residence volumes (SYSRES). Much of the flexibility of z/OS is built on these SYSRES sets.
What is mainframe LPA?
The link pack area (LPA) contains all the common reentrant modules that are shared by the system. The link pack area (LPA) can provide the following: Economy of real storage by sharing one copy of the modules.
What is defined in the IEASYMxx member of Parmlib?
IEASYMxx contains statements that define static system symbols and specify the IEASYSxx parmlib members that the system is to use. You can use the HWNAME, LPARNAME, and VMUSERID parameters to limit the scope of statements in IEASYMxx.
How do we find Parmlib concatenation?
You define the concatenation in the LOADxx member of SYS1. PARMLIB or SYSn. IPLPARM. Programs can use the IEFPRMLB macro to obtain the parmlib concatenation data set list, allocate and open the parmlib data sets, read a specified parmlib member, and close and unallocate the parmlib data sets.
What is a JOBLIB in JCL?
A JOBLIB statement is used in order to identify the location of the program to be executed in a JCL. The JOBLIB statement is specified after the JOB statement and before the EXEC statement. This can be used only for the in stream procedures and programs.
What is JOBLIB and Steplib in JCL?
JOBLIB and STEPLIB in JCL both are used to specify the load libraries so that that the programs that are being used in that JCL/JOB are searched in these libraries. Generally z/OS searches for the programs load module in the default system libraries where actually the IBM supplied programs are stored.
What is IPL in mainframe?
IPL (initial program load) is a mainframe term for the loading of the operating system into the computer’s main memory . A mainframe operating system (such as OS/390) contains many megabytes of code that is customized by each installation, requiring some time to load the code into the memory.
What is bootstrap in mainframe?
The bootstrap data set (BSDS) is a VSAM key-sequenced data set (KSDS) that holds information needed by IBM MQ. It contains the following: An inventory of all active and archived log data sets known to IBM MQ. IBM MQ uses this inventory to: Track the active and archived log data sets.
Parameter Library. A dataset in z/OS containing parameter settings. The most important is SYS1.PARMLIB which contains parameter settings for z/OS and many key subsystems. SYS1.PARMLIB is no longer is required on the ‘SYSRES’ DASD if using the SYSn.IPLPARM data set. Go to SYSn.IPLPARM You now can have as many “PARMLIBs” as you require.
How can I simplify the installation process of a PARMLIB?
You can simplify the installation process by specifying system defaults in members (IKJTSOxx) of the SYS1.PARMLIB data set instead of in tables. Using SYS1.PARMLIB members makes it easier to customize a system because installations need to change only one file.
What is an error message in PARMLIB?
Error message requires the operator to correct the parmlib member SET DAE command. Error message requires the operator to start DAE again (using the SET DAE command) after the problem is fixed. ALLOCxx: Parameters that control installation defaults for allocation values.
What is the output of the PARMLIB list command?
The output of the PARMLIB LIST command also shows the system that created the PARMLIB member, the timestamp and the user id of the person who issued the PARMLIB UPDATE command.