4.0 OPERATING SYSTEM NOTES AND CAUTIONS 4.2 PROGRAM MANAGEMENT
name for the link map is SLOCAl.LINK"AP.
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With the current implementation, only one module should be
"pre-linked". A program should be bound Into a single module and then "pre-linked".
The process of "pre-linkj~g" progr~ms can significantly reduce the time spent loading products. "Pre-tinking" one of the system products resulted in a 35-40 percent reduction in page faults, CP time, and elapsed time durlng loading. The reduction should be even greater when loading lar~e FORTRAN products.
1. Tape usage is restricted to permanent file backup/restore and dump analyzer operations for Rl.l.2.
1. The SET_WORKING_CATALOG (SETWC) command has no effect upon files whose names are created within ~pplications. For examples
SE TWC • jx t execute_task
task generates file na~e a
Files created by programs are not subject to the The program should specify a complete path name.
as parameters of commands (i.e., files specified wilt end up using working catalogs.
PSR NVEA027
working catalog.
File.s referenced at command level)
2. Although the preset_value file attribute can be set bye the set_rile_attribute command, this feature tis not supported. New pages assigned to segme~t access files are always initialized to zero.
PSR NVOS204
3. File attribute MIN_RECDRD_LE~GTH Is not set properly for record_type F files. MI~_RECaRO_lENGTH should default to MAX_RECORD_LENGTH if i t is allowed to default, but It is current'y defaulting to O. This affects SORT/MERGE when the sort key Is
SOFTWARE RELEASE BULLETIN always report the encounter correct exception condition. attribute witl not be changed. Use DISPLAY_FILE_ATTRIBUTES to verify attributes were set. Also, a subset of preserved attributes may be changed ~Ith the CHANGE_fILE_ATTRIBUTE command.
PSRs NVOC839, NVOD617, NVOD549, NVQ0536
8. COPY_FILE does not detect a COpy of a file to itself via circular creation. This could affect some migrating applications using indexed sequential files because fILE_LIMIT could be updated on el70 but not on CISO.
SOFTWARE RELEASE BULLETIN
NOS/VE Rl.l.2 lEVEL 6304.0 OPERATING SYSTEM NOTES AND CAUTIONS 4.4 BASIC ACCESS METHOD
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util ity environment of your choice and then access the 'ile. As an example, if you do a COPY_FILE involving an indexed sequential file and the error "unable to load FAP ••• " occurs, then YOU have Just experienced this problem.
PSR NVOC941
12. If a file was created
by COLLECT_TEXT
at NOS/Ve 1.1.1, i t was created with 'ite content=
legible and line number=
(0, 0)(length and location). Under 1.1.2, if you attempt to copy this fi'e to another file which does not yet exist, the copy aborts with AM 160044 line number length and location are unequal.
Note that it is impossible to create these files under 1.1.2 since
( 0 0 ) are 0 u t of r an g e val u es for lin e n u m be r an d ttl e de f au I t i s (1 1).
PSR NV00521 4.5 .i.D!!lf8.
1. The length of large data segllents and files cannot exceed 100,000,000 bytes.
4.6
It!lERAC..lI}lf
1. If an output line for a display type terminal (CRTI Is exactly equal to the page width attribute. overprinting of the tine will occur if more output lines fol'ow. To remedy this, set the page width differently or set the output_device attribute (00) to printer.
2. Users are now able to Jnfor~ the OS of their terminal model by using SETIA's terminal_model (TR~) parameter and specifying a 1-25 character name. This attribute can only be changed by SETTA but
can be retrieved by
IFP$FETCH_TERMINAl,
IFPSGET_TERMINAl_ATTRIBUTES,
IFP$GET_DEFLT_TERMINAl_ATTRIBUTES
and can be displayed by DISTA. The login defaults for this attribute are 'CDC721' for terminal class 3, 'VT100' for terminal class 1,and the null name for all other terminal classes. The restrictions which define valid SCL names are the on'y restrictions for specifyi~g the terminal_mode' parameter.
3. A new error code has been idded to Interactive Facility's repetoire to indicate that a task has aborted a get operation because an Interactive condition was received.
IF E SAB ORT_GE T
--ERROR--
gat operation aborted becauseSOfTWARE RELEASE BULLETIN NOS/VE Rl.l.2 lEVEL 630
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4.0 OPERATING SYSTEM NOTES AND CAUT10NS
4.6 INTERACTIVE
interactive condition received
1. A new function SBACKUP_FIlE is available under the restore_permanent_fi'es utility. The purpose of this function is to interrogate the information on a backup_file produced by the backup_permanent_fi Ie uti' Ity.AII characters returned in the string are in upper case. The $backup_file function causes the backup file to be rewound, so only the first item on the backup file may be queried.
S8ACKUP_FILE«file> (attribute))
The file parameter specifies the backup file to query.
attribute result
IDENTIFIER
stringIOENTIFIER_ TYPE s tr j ng
Returns the path name of the first item on the backup file.
This is the default attribute.
Retur"s the type of the Item. Either' 'SET' t:AT4l0G' 'FILE' or 'CYCLE' is returned.
Currently no abbreviations ~re supoorted for either the function Or for the attribute keywords.
An example use for this function is In attempting to restore from a backup fite for which the na~e of the catalog or file backed UP
is not known, but the destln3tJon of the restore is known. Note that the value returned is a string, so that Sfname needs to be
used to convert this to a file name, if this is to be used as a parameter on the rest~re_cata'og Qr restore_file subcommands.
Ex amp Ie:
Suppose someone has sent YOU a backup tape produced bya single BACKUP_CATALOG command, and that YOU want to restore the catalog to your own catalog $USER.MY_C~TAlOG. You could do the following:
restore_permanent_fiJes I=Iist_tlle
restore_cata.og Sfname(SbackuP_"'e(backup_file,identifier» ••
bfabackup_file ncn=$user.~,_catalog
SQFTWARE RELEASE BULLETIN NOS/VE Rl.l.2 LEVEL 630
4.0 OPERATING SYSTEM NOTES AND :~UTIONS 4.7 PERMANENT FILE UTILITIES
quit
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