COBOL and Language Environment runtime options comparison

Table 1. COBOL and Language Environment runtime options
COBOL option	Language Environment equivalent	Notes®
AIXBLD \| NOAIXBLD	AIXBLD \| NOAIXBLD	Invokes the access methods services for VSAM indexed and relative data sets to complete the file and index definition procedures for COBOL routines. Under z/OS, Access Method Services (AMS) messages are directed to the ddname specified in the Language Environment runtime option MSGFILE. Under CMS, the messages are erased, which is the same behavior as VS COBOL II. AIXBLD \| NOAIXBLD is not applicable under CICS®.
DEBUG \| NODEBUG	DEBUG \| NODEBUG	DEBUG \| NODEBUG provides behavior compatible with VS COBOL II.
FLOW \| NOFLOW	FLOW \| NOFLOW	FLOW \| NOFLOW provides behavior compatible with VS COBOL II.
LANGUAGE	NATLANG	NATLANG replaces LANGUAGE, which is a VS COBOL II installation option. You can select a national language at run time or installation time by using the NATLANG option.
LIBKEEP \| NOLIBKEEP	Not applicable	LIBKEEP \| NOLIBKEEP is not supported under Language Environment and is not applicable under CICS. To obtain similar function, use the Library Routine Retention (LRR) feature, which is described in z/OS Language Environment Programming Guide. To use LRR in an IMS/TM environment, see z/OS Language Environment Customization.
MIXRES \| NOMIXRES	Not applicable	MIXRES \| NOMIXRES is not supported under Language Environment and is not applicable under CICS. Mixed RES and NORES applications when linked with Language Environment® will exhibit RES-like behavior. For more information, see the appropriate version of the COBOL migration guide in the COBOL library at Enterprise COBOL for z/OS library.
QUEUE	Not applicable	QUEUE is not supported under Language Environment.
RTEREUS \| NORTEREUS	RTEREUS \| NORTEREUS	RTEREUS is not recommended as an installation default. Use RTEREUS only for specific applications and ensure that you understand the possible side effects, for example: Under Language Environment, RTEREUS(ON) is only supported in a single enclave environment. Applications that create multiple enclaves will terminate with error message IGZ0168S. Multiple enclaves can be created by applications that use SVC LINK or CMSCALL to invoke application programs. One example is when an SVC LINK is used to invoke an application program under ISPF that is using ISPF services (such as CALL 'ISPLINK' and ISPF SELECT). If a Language Environment reusable environment is established (using RTEREUS), attempts to run a C or PL/I main program under Language Environment will fail. For example, when running on ISPF with RTEREUS(ON): The first program invoked by ISPF is a COBOL program; a Language Environment reusable environment is established. At another point, ISPF invokes a PL/I or C program; the initialization of the PL/I or C program will fail. If many COBOL programs are run under the same z/OS task, "out of storage" abends may occur. This occurs because all storage acquired by Language Environment to run COBOL programs is kept until the z/OS task ends or the Language Environment environment terminates. Language Environment does not produce storage and runtime options reports unless STOP RUN is issued to end the enclave.
SIMVRD \| NOSIMVRD	SIMVRD \| NOSIMVRD	SIMVRD \| NOSIMVRD provides behavior compatible with the VS COBOL II SIMVRD \| NOSIMVRD option.
SPOUT \| NOSPOUT	RPTOPTS(ON \| OFF), RPTSTG(ON \| OFF)	Storage reports are directed to the ddname specified in the Language Environment option MSGFILE. For more information, see the appropriate version of the COBOL migration guide in the COBOL library at Enterprise COBOL for z/OS library.
SSRANGE \| NOSSRANGE	CHECK(ON \| OFF)	CHECK(ON \| OFF) provides behavior compatible with SSRANGE \| NOSSRANGE.
STAE \| NOSTAE	TRAP(ON,SPIE) TRAP(OFF)	If STAE \| NOSTAE is specified in input, then TRAP is set according to the option: TRAP(ON,SPIE) for STAE, and TRAP(OFF) for NOSTAE. TRAP(ON,SPIE) is the recommended setting.
UPSI	UPSI	UPSI provides behavior compatible with the VS COBOL II UPSI option.
WSCLEAR \| NOWSCLEAR	STORAGE(00,,,)	For behavior similar to WSCLEAR \| NOWSCLEAR, use the Language Environment STORAGE(00,,,) option. For more information, see the appropriate version of the COBOL migration guide in the COBOL library at Enterprise COBOL for z/OS library.