OMVS — Invoke the z/OS shell

Format

OMVS ALARM | NOALARM
     AUTOSCROLL | NOAUTOSCROLL
     CONVERT(character_conversion_table)
     DBCS | NODBCS
     DEBUG(NO | YES | EVENT | DATA)
     ECHO | NOECHO
     ENDPASSTHROUGH(ATTN | CLEAR | CLEARPARTITION |
         ENTER | NO | PA1 | PA3 | PF1 | PF2 | PF3 … PF24 | SEL)
     ESCAPE('escape-characters')
     LINES(n)
     PFn
         (ALARM | NOALARM |
          AUTOSCROLL | NOAUTOSCROLL |
          BACKSCR |
          BOTTOM |
          CLOSE |
          CONTROL |
          ECHO | NOECHO |
          FWDRETR |
          HALFSCR
          HELP |
          HIDE | NOHIDE |
          NEXTSESS |
          NO |
          OPEN |
          PFSHOW | NOPFSHOW |
          PREVSESS |
          QUIT |
          QUITALL |
          REFRESH |
          RETRIEVE
          RETURN |
          SCROLL |
          SUBCOMMAND |
          TOP |
          TSO )
     PFSHOW | NOPFSHOW
     RUNOPTS('LE/370-runtime-options')
     SESSIONS(n)
     SHAREAS | NOSHAREAS
     WRAPDEBUG(n)

Description

Use the OMVS command to invoke the z/OS shell. You can select options on the OMVS command to customize aspects of the shell interface, such as the function keys.

After you are working in a shell session, you can switch to subcommand mode, return temporarily to TSO/E command mode, or end the session by exiting the shell.

Parameters

ALARM | NOALARM
Controls the sounding of the 3270 alarm to alert you to particular events. The default is ALARM.
ALARM
Causes the 3270 alarm to sound when the <alert> character is encountered in data being sent to the workstation.
NOALARM
Prevents the 3270 alarm from sounding when the <alert> character is encountered in data being sent to the workstation.
AUTOSCROLL | NOAUTOSCROLL
Controls the setting of the autoscroll function. The default is AUTOSCROLL.
AUTOSCROLL
Specifies automatic scrolling of input and output written to the screen.
NOAUTOSCROLL
Specifies that there not be automatic scrolling.
CONVERT(character_conversion_table)
Specifies the character conversion table used to convert between the z/OS code page and the code page used in the shell.
data_set_name(member_name)
Specifies the name of the partitioned data set (PDS) and the name of the member that contains the character conversion table.
data_set_name
Specifies the name of the partitioned data set containing the character conversion table to be used.
(member_name)
Specifies the name of the character conversion table to be used. It is the name of a member in a partitioned data set.
If both the member_name and data_set_name are omitted, member FSUMQ000 in the default module search order is used as the character conversion table. Table 1 lists the various formats of the OMVS CONVERT command:
Table 1. Various formats of the OMVS CONVERT command (OMVS command)
Command format What it does
OMVS CONV((BPXFX111)) See Note 1.
OMVS CONV('SYS1.XXXX') Looks for SYS1.XXXX(FSUMQ000).

FSUMQ000 is an alias; when shipped by IBM®, it points to BPXFX100, the default null character conversion table.
OMVS CONV('SYS1.XXXX(BPXFX111)') Looks for SYS1.XXXX(BPXFX111)
OMVS CONV(XXXX) Looks for prefix.XXXX(FSUMQ000)
OMVS CONV(XXXX(BPXFX111)) Looks for prefix.XXXX(BPXFX111)
Note:
  1. If the data_set_name is omitted, z/OS UNIX locates member_name using the default search order for modules in the system library concatenation. The located member_name is used as the character conversion table. For example, if you specify: 
    OMVS CONVERT((BPXFX111))
    the character conversion table is BPXFX111 in the default module search order in the system library concatenation.
    If the member name is omitted, the OMVS command looks in the specified data_set_name for member FSUMQ000, to use it as the character conversion table. For example, if you specify: 
    OMVS CONVERT('SYS1.XLATE') …
    OMVS uses SYS1.XLATE(FSUMQ000) as the character conversion table.
Table 2 lists the character conversion tables supplied with the OMVS command. It shows the locale name, the conversion table to specify, and the default escape character for that table. If you are using the De_CH.IBM-500 locale, you must specify BPXFX450 as the conversion table, and the default escape character for that particular table is the topic sign, §. To specify BPXFX450 as the conversion table, issue: 
CONVERT((BPXFX450))
Table 2. Locales, their conversion tables, and default escape characters (OMVS command)
Shell and Utilities locale 3270 code page Shell code page Conversion table Default escape character
De_CH.IBM-500 IBM-500 IBM-500 BPXFX450 §
De_DE.IBM-273 IBM-273 IBM-273 BPXFX473 §
De_DK.IBM-277 IBM-277 IBM-277 BPXFX477 ¤
En_GB.IBM.285 IBM-285 IBM-285 BPXFX485 ‾ (the overline character)
En_JP.IBM-1027 IBM-1047 IBM-1047 BPXFX100 ¢
En_US.IBM-037 IBM-037 IBM-037 BPXFX437 ¢
En_US.IBM-1047(For APL terminals) IBM-037 IBM-1047 BPXFX211 ¢
En_US.IBM-1047 IBM-037 IBM-047 BPXFX111 ¢
Es_ES.IBM-284 IBM-284 IBM-284 BPXFX484 ¨
Fi_FI.IBM-278 IBM-278 IBM-278 BPXFX478 §
Fr_BE.IBM-500 IBM-500 IBM-500 BPXFX450 §
Fr_CA.IBM-037 IBM-037 IBM-037 BPXFX437 ¢
Fr_CA.IBM-1047 IBM-037 IBM-1047 BPXFX111 ¢
Fr_CH.IBM-500 IBM-500 IBM-500 BPXFX450 §
Fr_FR.IBM-297 IBM-297 IBM-297 BPXFX497 §
Is_IS.IBM-871 IBM-871 IBM-871 BPXFX471 ¨
It_IT.IBM-280 IBM-280 IBM-280 BPXFX480 §
Ja_JP.IBM-939 IBM-939 IBM-939 BPXFX100 ¢
Ja_JP.IBM-1027 IBM-1027 IBM-1027 BPXFX100 ¢
Nl_BE.IBM-500 IBM-500 IBM-500 BPXFX450 §
Nl_NL.IBM-037 IBM-037 IBM-037 IBM-037 ¢
Nl_NL.IBM-1047 IBM-037 IBM-1047 BPXFX111 ¢
No_NO.IBM-277 IBM-277 IBM-277 BPXFX477 ¤
Pt_PT.IBM-037 IBM-037 IBM-037 BPXFX437 ¢
Pt_PT.IBM-1047 IBM-037 IBM-1047 BPXFX111 ¢
Sv_SE.IBM-278 IBM-278 IBM-278 BPXFX478 §
Xx_XX.IBM-1047 IBM-1047 IBM-1047 BPXFX100 ¢
DBCS | NODBCS
Specifies whether to use DBCS on 3270-type terminals. The default is DBCS processing.
DBCS
Causes OMVS to automatically determine whether the terminal supports DBCS. If so, DBCS processing takes place. It also enables the OMVS command to handle double-byte data in translated messages. This operand is ignored if you're not using a DBCS terminal.
Double-byte data, including escape character strings, cannot be supplied for any of the OMVS command operands. The following data strings used by OMVS must contain single-byte characters only:
  • Escape characters
  • Conversion table data set name
  • Conversion table member name
  • Password or password phrase used to access the conversion table, if one is required

Restriction: OMVS supports only code pages 939, 1027, and 1047 on DBCS. The null character conversion table (BPXFX100) should be used with DBCS terminals. (It is the default.)

NODBCS
Specifies that OMVS operate in SBCS mode only. If you are logged on to a terminal that supports DBCS, this operand allows you to bypass DBCS processing.
DEBUG(NO | YES | EVENT | DATA)
Controls the collection and output of debugging information. The default is NO; change the default setting only if IBM requests it.
NO
Indicates that no debugging information is to be written.
YES
Indicates that debugging information is collected while the OMVS command runs.
EVENT
Causes additional debugging information to be written whenever certain internal events occur in the OMVS command.
DATA
Causes any data received from or sent to the workstation to be written. Also, debug information for internal events is recorded.

Also, the ddname for the OMVS debug data set is always SYSFSUMO.

ECHO | NOECHO
Enables OMVS to control the visibility of the input area. The default is NOECHO.
ECHO
Allows OMVS to hide or unhide the input area.
NOECHO
Prevents OMVS from hiding and unhiding the input area.
ENDPASSTHROUGH(ATTN | CLEAR | CLEARPARTITION | ENTER | NO | PA1 | PA3 | PF1 | PF2 | PF3 … PF24 | SEL)
Specifies a 3270 key that ends TSO/3270 passthrough mode and forces OMVS to return to the shell session. Because this key would be used only during application development, the default is ENDPASSTHROUGH(NO). All 3270 keys can be used by the 3270 application.
ATTN
Specifies the 3270 <Attention> key. In some 3270 applications, this key may be changed to <PA1> before it is seen by the TSO/E OMVS command. If so, OMVS will never see the <Attention> key; specify <PA1>instead of <ATTN>.

With some terminal connections, the <ATTN> key may not be available.

CLEAR
Specifies the 3270 CLEAR key. In some TS0/3270 applications, the TSO/E OMVS command will not see <CLEAR> when the CLEAR key is pressed. In these cases, specifying ENDPASSTHROUGH(CLEAR) will have no effect.
CLEARPARTITION
Specifies the 3270 <Clear Partition> key. This key is effective only if the application is using explicit 3270 partitions.
ENTER
Specifies the 3270 ENTER key. This key is useful only if the 3270 application is completely driven by PF or PA keys.
NO
No breakout key; this is the default.
PA1
Specifies the 3270 <PA1>key. For some TSO/3270 applications, <PA1> is changed to <ATTN> before OMVS sees it. In these cases, you should specify ENDPASSTHROUGH(ATTN).

In general, the provider of the TSO/3270 application needs to tell the user whether <PA1>, <ATTN>, or <CLEAR> can be used for ENDPASSTHROUGH.

PA3
Specifies the 3270 <PA3> key. The <PA3> key may not be available on some keyboards.
PFn
Specifies the 3270 function keys 1–9.
PFnn
Specifies the 3270 function keys 10–24.
SEL
Specifies the 3270 Cursor Select key. This key is useful only when the 3270 application creates fields on the 3270 screen that can be selected by a light pen.
ESCAPE('escape-characters')
Specifies an escape character as the first character in a two-character sequence that is the EBCDIC equivalent of an ASCII control character (for example, the EBCDIC “ød” is the equivalent of the ASCII “Ctrl-D”). When an escape character is typed in the input area, the next character typed is converted into a special character before it is passed to the shell.

You can enter a string up to eight escape characters, enclosed in single quotes with no space between them. (Do not use nonprintable EBCDIC characters.)

The default escape character depends on the character conversion table being used. (See Table 2 for a list of default characters and the conversion tables they are used with.) To enter <Ctrl-D>, for example, type in ød or øD in the input area.

If the last character in the input area is one of the escape characters, the <newline> character normally appended to the input data is suppressed. For example, to enter only a <Ctrl-Q> with no final <newline>, type the string øQø in the input area, and press <Enter>.

LINES(n)
Controls the amount of output data the OMVS command keeps for scrolling. The default is roughly four screenfuls. You can specify that between 25 and 3000 lines should be kept in the output buffer.
PFn(ALARM | NOALARM | AUTOSCROLL | NOAUTOSCROLL | BACKSCR | BOTTOM | CLOSE | CONTROL | ECHO | NOECHO FWDRETR | HALFSCR | HELP | HIDE | NOHIDE NEXTSESS | NO | OPEN | PFSHOW | NOPFSHOW | PREVSESS | QUIT | QUITALL | REFRESH | RETRIEVE | RETURN | SCROLL | SUBCOMMAND | TOP | TSO)
Customizes the settings for the function keys that you use while working in the z/OS shell or in subcommand mode. in <PFn> The n is a one- or two-digit function key number from 1 to 24. Do not use a leading zero for a one-digit number. More than one function key can be assigned the same function. For example, both <PF1> and <PF13> are assigned the Help function by default.
All PF keys can be abbreviated using the usual TSO/E rules. For example,
  • OPEN can be abbreviated as O, OP, or OPE.
  • NEXTSESS can be abbreviated as NE, NEX, NEXT, NEXTS, NEXTSE, or NEXTSES.
  • PFSHOW can be abbreviated as PF, and NOPFSHOW can be abbreviated as NOPF.
ALARM | NOALARM
A toggle key used to turn on and off the 3270 alarm that sounds when an <alert> character is written to the output area (also available in subcommand mode).

The label for this PF key (in the PF key lines at the bottom of the screen) shows up as either ALARM or NOALARM, depending on the current toggle setting. If it is ALARM, pressing this PF key turns the alarm on. If it is NOALARM, pressing this PF key turns the alarm off.

AUTOSCROLL | NOAUTOSCROLL
A toggle key used to turn the autoscroll function on and off (also available in subcommand mode). The screen automatically scrolls forward when new input is written to the screen.

The label for this PF key (in the PF key lines at the bottom of the screen) shows up as either AUTOSCROLL or NOAUTOSCROLL, depending on the current toggle setting. If it is AUTOSCROLL, pressing this PF key turns the autoscroll function on. If it is NOAUTOSCROLL, pressing this PF key turns the autoscroll function off.

BACKSCR
Scrolls the screen backward one full screen, redisplaying previously displayed output lines. The scrolling ends when the oldest available saved line is reached. (This option is also available in subcommand mode.)

If you first move the cursor into the output area, the line with the cursor becomes the top line.

BOTTOM
Scrolls help information forward to the last panel of information, and scrolls output forward the last full screen (also available in subcommand mode).
CLOSE
Ends the displayed session and switches to another one, or returns to TSO/E if the only session was closed (also available in subcommand mode).
CONTROL
Treats all characters in the input area as if they were preceded by an escape character. Also, no trailing <newline> is appended to the data.
ECHO | NOECHO
A toggle key used to control whether the shell command can hide or unhide the OMVS command input area.

The label for this PF key (in the PF key lines at the bottom of the screen) shows up as either ECHO or NOECHO, depending on the current toggle setting. If it is ECHO, pressing this PF key allows the current shell command to hide or unhide the OMVS command input area. If it is NOECHO, pressing this PF key prevents the current shell command from hiding or unhiding the OMVS input area.

FWDRETR
Retrieves the oldest available input line from a stack of saved input lines, starting with the oldest and moving up to the most recent line (also available in subcommand mode).
HALFSCR
Scrolls half the displayed screen forward, allowing room for more output data. If the output area on the screen is not full, half the displayed lines are scrolled off the screen. If you first move the cursor into the output area, the line with the cursor becomes the middle line. (This option is also available in subcommand mode.)
HELP
Temporarily suspends the session and displays the help information for the OMVS command. The scrolling function keys can be used to look at the help information. To exit the help information, press the Return function key. (This option is also available in subcommand mode.)
HIDE | NOHIDE
Temporarily hides or unhides the input data you type on the shell command line. If you press this PF key while the input area is hidden, the input area is made visible. If it is not hidden, the input area is hidden.
The input area stays hidden or unhidden until:
  • You press <Enter>.
  • You press the HIDE | NOHIDE PF key.
  • You switch to another session, escape to TSO/E and return, or enter subcommand mode and return.
If OMVS is running in NOECHO mode, the input area will be visible after you take one of these actions. If OMVS is running in ECHO mode, the visibility of the input area depends on the shell command you are running.
NEXTSESS
Switches to the next (higher-numbered) session (also available in subcommand mode).
NO
Deactivates a function key so that it doesn't do anything (also available in subcommand mode).
OPEN
Starts a new shell session and switches to it (also available in subcommand mode).
PFSHOW | NOPFSHOW
Toggles on and off the display of the active function key settings at the bottom of the screen (also available in subcommand mode, and can be used as PF and NOPF).
PREVSESS
Switches to the previous (lower-numbered) session (also available in subcommand mode).
QUIT
Ends the displayed session and switches to another one, or returns to TSO/E if the only session was closed (also available in subcommand mode).
QUITALL
Ends all shell sessions and causes OMVS to end and to return to TSO/E (also available in subcommand mode).
REFRESH
Updates the screen with the latest output data. Use this function key if the display of output is incomplete, but the session is now displaying INPUT status. For more information about the status field, see z/OS V2R2.0 UNIX System Services User's Guide. (This option is also available in subcommand mode.)
RETRIEVE
Retrieves the most recently entered input line from a stack of saved input lines, starting with the most recent and moving down to the oldest available line (also available in subcommand mode).
RETURN
If help information is displayed, returns you to the session you were in. If you are in subcommand mode, returns you to the shell. (This option is also available in subcommand mode.)
SCROLL
Scrolls the last line of output data to the top of the screen, making room for more output data. If Help information is displayed, its data is scrolled. If you first move the cursor into the output area, the line with the cursor becomes the top line. (This option is also available in subcommand mode.)
SUBCOMMAND
If you press this key when the command line is blank, it leaves the shell session and enters subcommand mode.

To run a subcommand without switching to subcommand mode, type the subcommand at the command line and then press the function key. You can enter the OMVS subcommands at the command line when you are in subcommand mode.

TOP
Scrolls help information backward to the first panel, and scrolls output backward to a screen full of the oldest available output (also available in subcommand mode).
TSO
If you press this key when the command line is blank, it temporarily suspends a shell session or subcommand mode, and you are in a TSO/E session. You can enter TSO/E commands. Press <PA1> or the <Attention> key to exit TSO/E command mode and return to the session you were in. (This option is also available in subcommand mode.)

To run a TSO/E command without suspending the shell session or subcommand mode, type the command at the command line and then press the function key. When the command completes, you can continue working in the shell session or subcommand mode.

Function key defaults:

PF1(HELP)
PF2(SUBCOMMAND)
PF3(RETURN)
PF4(TOP)
PF5(BOTTOM)
PF6(TSO)
PF7(BACKSCR)
PF8(SCROLL)
PF9(NEXTSESS)
PF10(REFRESH)
PF11(FWDRETR)
PF12(RETRIEVE)
PF13(HELP)
PF14(SUBCOMMAND)
PF15(RETURN)
PF16(TOP)
PF17(BOTTOM)
PF18(TSO)
PF19(BACKSCR)
PF20(SCROLL)
PF21(NEXTSESS)
PF22(REFRESH)
PF23(FWDRETR)
PF24(RETRIEVE)

PFSHOW | NOPFSHOW
Specifies that the PF keys be shown at the bottom of the screen. The default is PFSHOW.
PFSHOW
Specifies that PF keys be shown at the bottom of the screen.
NOPFSHOW
Specifies that PF keys not be shown at the bottom of the screen.
RUNOPTS('run-time-options')
Specifies a string containing run-time options, which are passed to Language Environment® when the TSO/E OMVS command starts up, and to the initial login shell program in the _CEE_RUNOPTS environment variable. These options are the same as those passed to other Language Environment programs run from the TSO READY prompt.

The options string can be from 1 to 1000 characters in length, and should contain valid run-time options. It should not contain options such as POSIX(OFF), TRAP(OFF), TRAP(ON,NOSPIE), or MSGFILE(), or characters such as slashes, unbalanced parentheses or quotes, or imbedded NULL characters. Specifying such options or using these characters will cause unpredictable problems when the TSO/E OMVS command runs.

If the RUNOPTS operand is omitted, OMVS uses the RUNOPTS string defined in the BPXPRMxx member of SYS1.PARMLIB that is active for the OMVS kernel. If no RUNOPTS string was defined in BPXPRMxx, no default run-time options are used when the TSO/E OMVS command starts up.

For more information, refer to z/OS Language Environment Programming Guide which contains a discussion about restrictions on _CEE_RUNOPTS environment variable settings.

SESSIONS(n)
Specifies the initial number of sessions to be started. The default is 1, and the allowed range is 1 to 100; most users will use two or three sessions.
Note: You can specify a number from 1 to 100 without getting a syntax error on the command. Normally, you cannot start more than several sessions before getting an error message. If you try to start too many sessions (the limit depends on the size of your TSO/E address space), your TSO/E user ID runs out of storage and various unpredictable errors may occur. You may have to log off your TSO/E user ID before you can continue.
SHAREAS | NOSHAREAS
Specifies whether to run the shell program in a separate address space. Both OMVS and the shell will run in the TSO/E address space when OMVS is invoked with the SHAREAS parameter.
OMVS will use SHAREAS as the default if the shell program is not a SETUID or SETGID program and the owning UID or GID is not the same as the current user.
SHAREAS
Runs the shell program in the same TSO/E address space as OMVS. SETUID and SETGID shell programs cannot be run with the SHAREAS option unless your UID or GID owns the shell program.
Note: If you end OMVS while in SHAREAS mode, the shell process ends immediately. (It may get killed, but it will usually end by itself when the TTY is closed.)
NOSHAREAS
Runs the shell program in a separate address space. SETUID and SETGID shell programs usually require this option.
WRAPDEBUG(n)
Controls how many lines of debug data OMVS writes out before wrapping around to the top of the debug data set. This option is effective only if the DEBUG(YES) DEBUG(EVENT), or DEBUG(DATA) options are used.

The WRAPDEBUG(n) value specifies how many lines of debug data OMVS writes out before wrapping around to the top of the debug data set. The default number of lines is 10 000. The value of n must be between 100 and 1 000 000 000. The debug data set must be large enough to hold n 80-byte lines of debug data. If the debug data set is too small, debug recording stops when the data set fills up.

Subcommands

When the shell is active, you can enter subcommand mode by pressing the Subcommand function key. While in subcommand mode, you can enter subcommands on the command line or use function keys.
ALARM
Turns on the 3270 alarm which sounds when an <alert> character is written to the output area.
AUTOSCROLL
Activates automatic forward scrolling of output as new input is written to the screen.
BACKSCR
Scrolls the screen backward one full screen, redisplaying previously deleted output lines. The scrolling ends when the oldest available saved line is reached.
BOTTOM
If the help information is displayed, it is scrolled forward to the last panel of information. If output is displayed, it is scrolled forward to the last screen of output.
CLOSE
Ends the displayed session and switches to another one, or returns to TSO/E if the only session was closed.
ECHO
Allows the current shell command to control whether the OMVS input area is visible or hidden. The HIDE subcommand, NOHIDE subcommand, and HIDE | NOHIDE PF keys can temporarily override the input area visibility set by the current shell command.
HALFSCR
Scrolls half the displayed screen forward, allowing room for more output data.
HELP
Displays help information for the OMVS command. To view the help information, use the scrolling function keys. To return from Help to the session, press the Return function key.

? is a short form for the Help subcommand.

HIDE
Temporarily hides the input data you type on the shell command line. The input area stays hidden until you do one of the following actions:
  • Press <Enter>.
  • Press the HIDE | NOHIDE PF key.
  • Switch to another session, escape to TSO and return, or enter subcommand mode and return.
If OMVS is running in NOECHO mode, the input area will be visible after you take one of these actions. If it is running in ECHO mode, whether you can see the input area depends on the shell command you are running.
NEXTSESS
Switches to the next (higher-numbered) session.
NOALARM
Prevents the 3270 alarm from sounding when the <alert> character is encountered in data being sent to the workstation.
NOAUTOSCROLL
Turns off the automatic scrolling (AUTOSCROLL) function.
NOECHO
Causes the OMVS input area to remain visible regardless of the current shell command. You can use the HIDE subcommand and the PF key to temporarily hide the input area.
NOHIDE
Temporarily unhides the input data you type on the shell command line. The input area remains visible until you do one of the following actions:
  • Press <Enter>.
  • Press the HIDE | NOHIDE PF key.
  • Switch to another session, escape to TSO and return, or enter subcommand mode and return.
If OMVS is running in NOECHO mode, the input area remains visible after you take one of these actions. If OMVS is running in ECHO mode, the visibility of the input area depends on the shell command you are running.
NOPFSHOW
Turns off the display of the function key settings and escape characters at the bottom of the screen.
OPEN
Starts a new shell session and switches to it.
PFSHOW
Displays the current function key settings and escape characters on the bottom two lines of the display screen. A maximum of two screen lines is used. If some function key settings do not fit on the two lines, they are not displayed.
PREVSESS
Switches to the previous (lower-numbered) session.
QUIT
Ends the displayed session and switches to another one, or returns to TSO/E if the only session was closed.
QUITALL
Ends all shell sessions and causes OMVS to end and to return to TSO/E.
RETURN
Returns from subcommand mode to the shell session. If help information is being displayed, the session returns to subcommand mode and you must enter the RETURN command again to return to the shell.
SCROLL
Scrolls forward the data displayed on the screen, approximately one full screen.
TOP
Scrolls help information backward to the first panel. Scrolls output backward to a display of the oldest available output.
TSO
Invokes TSO/E command mode. In this mode, you can enter TSO/E commands. Press <PA1>or the <Attention> key to return to subcommand mode.

Usage notes

  1. The OMVS command is a Language Environment application. OMVS overrides the default MSGFILE ddname (SYSOUT) and uses ddname SYSFSUMM.

    Normally, any Language Environment error messages from the OMVS command are displayed on the TSO/E terminal. If you want to redirect these messages, you need to allocate the SYSFSUMM ddname instead of the SYSOUT ddname, as is usual with Language Environment applications.

  2. The language of the OMVS command messages is determined by the PROFILE PLANGUAGE setting when OMVS is invoked. Do not change PROFILE PLANGUAGE while OMVS is running

Return codes

0
Processing successful.
12
Processing unsuccessful. An error message has been issued.

Examples

These examples explain how to use the multi-session capability of OMVS:

  1. To start 2 sessions automatically when starting OMVS, enter: 
    OMVS SESSIONS(2)
  2. To assign the NEXTSESS function to a PF key, enter: 
    OMVS PF1(NEXTSESS)
Parent topic: TSO/E commands