Setting the name-pattern for dump data sets

Use the DUMPDS NAME command to establish a name-pattern for automatically allocated dump data sets.

DD NAME
`DD NAME=name-pattern`

The parameter is:

NAME=name-pattern

The system names automatically allocated dump data sets according to the naming convention specified by the name-pattern. The name-pattern can include both text and system symbols. The system substitutes text for the system symbols when it creates data set names.

The system default name-pattern is:

SYS1.DUMP.D&YYMMDD..T&HHMMSS..&SYSNAME..S&SEQ.

Note: If you want to use a name pattern other than the system default, place the DUMPDS NAME command before the DUMPDS ADD commands, so that the system uses the correct name pattern for the added resources. Using a different name pattern could cause the system to use different RACF® profiles for the allocation.

Before you specify system symbols in the DUMPDS NAME command, read the rules and recommendations for using system symbols in commands in Sharing system commands.

Note:

All name-patterns must specify the &SEQ. sequence number system symbol to ensure uniqueness. The system rejects the name-pattern if you do not specify &SEQ..
When you change the installation naming convention for dump data sets, also change the procedures for protecting them (password or RACF protection).
If the installation has a SYSNAME that begins with a numeral, the default will be changed to either SYS1.DUMP.D&YYMMDD..T&HHMMSS..S&SYSNAME..S&SEQ. or | SYS1.DUMP.D&YYMMDD..T&HHMMSS..S&SYSNAME(2&colon.8)..S&SEQ to ensure that the resulting S&SYSNAME position will have only eight characters.
Names generated by a name-pattern must adhere to MVS™ data set naming conventions and limitations. Ensure that system symbols do not return a numeric character as the first character of any qualifier in the data set name. For example, in the default name-pattern:
```
SYS1.DUMP.D&YYMMDD..T&HHMMSS..&.SYSNAME..S&SEQ.
```
&HHMMSS, &SEQ, and &YYMMDD return numeric substitution texts. Each symbol is preceded by an alphabetic character to avoid placing a numeric character in the first character of each qualifier. If resolved substitution texts create a data set name that is not valid, the system rejects the name-pattern and issues message IEE855I. The previous name-pattern remains in effect.
The DUMPDS NAME function will not work when the command is issued from an MCS, HMCS or SMCS console and the character '&' is specified as a command delimiter. Command delimiters are defined using the CMDDELIM parameter on the INIT statement of the CONSOLxx parmlib member. See z/OS MVS Initialization and Tuning Reference for more information on defining command delimiters.

Example:

To establish automatically allocated dump data sets with names such as

SYS1.USERIDX.T025930.S00001

where the system name is SYS1 and USERIDX is the name of the job requesting the dump, enter:

DD NAME=&SYSNAME..&JOBNAME..T&HHMMSS..S&SEQ.