Run-time Tunables

The following run-time tunables are available:

arguments_are_initial Affects the COBOL command line arguments returned from the syntax ACCEPT ... FROM ARGUMENT-NUMBER and ACCEPT ... FROM ARGUMENT-VALUE
cobconfig_error_report Specifies whether any errors detected during the processing of the configuration file are reported
command_line_accept Specifies whether the first ACCEPT or READ from STDIN takes the input from the command line
command_line_linkage Enables you to pass a command line to the main program
core_on_error Specifies in what circumstances a core file is produced
current_day Specifies the day of the month required to be returned
current_hour Specifies the hour of the day required to be returned
current_minute Specifies the minute of the hour required to be returned
current_month Specifies the month of the year required to be returned
current_second Specifies the second of the minute required to be returned
current_year Specifies the year required to be returned
datewarp_dynamic Specifies whether the values specified by the current_day, current_month, and current_year tunables return static or "rolling" values
debug_on_error Specifies whether to enable just-in-time debugging
debugger_command Specifies the command to start the debugger when just-in-time debugging is enabled
default_cancel_mode Specifies whether logical or physical cancels are used
Specifies the maximum size of memory to be allocated dynamically at run time for use by virtual heaps
entry_point_mapper Specifies whether entry point mapping support is to be enabled
entry_point_mapper_alias_exists_error Specifies whether the Entry Point Mapping facility causes a run-time system error COBRT198 ("Load failure") when a program with the same name as an alias definition is found on disk.
entry_point_mapper_search_order Specifies whether to use entry point mapping to look for programs before or after searching for the programs on disk
Control whether an RTS 119 error is generated when an attempt is made to load a program containing a duplicate entry-point.
faultfind_config Controls the inclusion of program memory data in the Faultfinder output file
faultfind_level Turns on FaultFinder reporting
faultfind_outfile Specifies the filename to which a FaultFinder report is written
faultfind_recsize Specifies the internal cache size used to store FaultFinder trace operations
Specifies the escape character used when interpreting filenames provided to the run-time system in calls such as CBL_OPEN_FILE
Specifies the quotation character used when interpreting filenames provided to the run-time system in calls such as CBL_OPEN_FILE
intra_process_record_locking Specifies whether the run-time system can share a file and set record locks against a file within a process
lock_mode Selects the locking implementation to be used
mainframe_floating_point Specifies whether mainframe floating-point emulation is required
memory_free_check_size Specifies the size of the freed memory check array
memory_strategy Sets a memory management strategy
mfpm_access_cancelled_data Specifies whether the Working-Storage Sections of AMODE programs that have been canceled continue to be addressable
mfpm_external_data31 Specifies whether external data items are registered with Mainframe Pointer Manager (MFPM) above or below the 16 Mb line
mfpm_logging Specifies whether Mainframe Pointer Manager (MFPM) events are to be traced
Enables you to reduce the time the run-time system takes to initialize if your project or application does not execute remote programs.
profile_behavior Specifies the behavior of the Profiler with regard to the counting of time spent in called programs
program_search_intgnt Changes the order of file extensions in which the run-time system searches for program files
program_search_order Changes the order in which the run-time system searches locations for program files
Specifies whether the run-time system treats input from a STDIN stream as record sequential or line sequential
shared_memory_segment_size Specifies the initial size of the shared memory block allocated by the run-time system
signal_regime Specifies whether or not the run-time system is to use its own signal handlers
timewarp_dynamic Specifies whether the values specified by the current_hour, current_minute, and current_second tunables return static or "rolling" values

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