Statement Summary

Table 1. DYNALLOC Summary
Variable	Value
Required/Optional Statement	Optional
Statement Default	None
Placement in Initialization Stream	DYNALLOC statements, if used, must be placed first in the JES3 initialization stream.
Coding Considerations	The DYNALLOC statement must begin in column 1; it *cannot* be continued, nor can comments be embedded. All parameters pertaining to a DYNALLOC statement must be defined on one statement; continuation statements are not permitted. The maximum number of DYNALLOC initialization statements is 1635 minus the number of DD statements in the JES3 start procedure. If a dynamically allocated data set or device is inaccessible to a main in the JES3 complex, operator intervention will be required during JES3 initialization. You cannot dynamically allocate dummy data sets or data sets defined by the ddnames: CHKPNT JES3IN STEPLIB The JES3 global processor will dynamically allocate all of the DD's specified on the DYNALLOC statement. Only a subset of the DD's specified on DYNALLOC statement will be dynamically allocated by the JES3 local processors. The following is a list of the DD's that will be dynamically allocated if they appear on a DYNALLOC statement: DD's for spool data sets JES3JCT JES3OUT JESABEND SYSABEND SYSUDUMP The following DD's will not be dynamically allocated by the local processors if they appear on a DYNALLOC statement. Note that if a local processor becomes the global processor through a Dynamic System Interchange (DSI), the DD's will be dynamically allocated: IATPLBxx JES3DRDS JES3SNAP Any user DD's DYNALLOC statements cannot appear in a member specified using the INCLUDE statement.
Security Usage	None
Performance Considerations	None
Initialization Stream Overrides	None
Restart or Command Modification	Cold start, warm start, or hot start with refresh for all parameters.