The SAVALLCHG command does a SAVCHGOBJ against all libraries on the
system to tape and prints a summary listing. This allows a good
daily backup for many systems when used in conjunction with a
periodic SAVLIB LIB(*ALLUSR) or LIB(*NONSYS).
The user of the command must be authorized to the TAASAVALLC
authorization list.
Three commands are provided:
** SAVALLCHG - Saves all changed objects to tape
** SAVALLCHG2 - Saves all changed objects to save files in a
specified library
** SAVALLSAVF - Saves the SAVALLCHG2 save files to tape
** A typical command would be entered as:
SAVALLCHG DEV(TAP01) REFDATE(*ALLUSR)
The SAVALLCHG function does not require any additional DASD
space, but does require operator attendance if a media change
is needed.
SAVALLCHG2
SAVALLSAVF DEV(TAP01)
The SAVALLCHG2 function does not require operator attendance,
but does require sufficient DASD space. The SAVALLSAVF
function requires operator attendance if a media change is
needed.
There is a companion command to restore from the tape media created.
See the TAA Tool RSTALLCHG.
Comparison with SAVCHGOBJ
-------------------------
The SAVALLCHG tool has been left in TAATOOL even though the system
supported SAVCHGOBJ command supports a similar function. The major
differences are as follows:
** A listing is produced with SAVALLCHG with one line per library
stating the number of objects saved and the number which
cannot be saved. This provides a simple summary of where the
problems are if any.
** SAVALLCHG2 command allows saving of all libraries to save
files. SAVCHGOBJ can only save one library to a save file.
** If a new library exists, it must be saved first with SAVLIB in
order for SAVCHGOBJ to operate. SAVALLCHG recognizes the fact
the library has never been saved and saves all objects. This
function is not available if REFDATE(*SAVLIB) is specified.
** SAVCHGOBJ supports the LIB(*ALLUSR) value. The same function
is supported by SAVALLCHG. If you use SAVALLCHG LIB(*ALLUSR),
you must restore with the RSTALLCHG TAA Tool.
General comments
----------------
Both SAVALLCHG commands assume the use of standard labeled tapes.
This is a requirement for the use of the RSTALLCHG command. To
create a standard label tape, you must specify the NEWVOL parameter
on the INZTAP command.
The SAVCHGOBJ command allows up to 300 libraries to be specified.
The SAVALLCHG command finds the libraries that exist in the system
and builds a list of 300 at a time. This allows an efficient use of
SAVCHGOBJ as the system can better overlap the processing time on one
library while writing out the changed objects for another library.
The SAVALLCHG2 command saves one library at a time to a save file in
the specified library. All save files in the designated library are
cleared at the beginning of the command. This allows you to follow
the command with SAVALLSAVF and have the tape output represent only
the changed objects on the system (it would be a mirror image of what
you would have have saved with SAVALLCHG).
You may specify up to 100 library names (including generic names) to
be included. This allows a save of specific libraries and may be
used if you have multiple tape drives and want multiple SAVALLCHG
commands to be in operation. If the INCLIB parameter is one or more
library names, the REFDATE parameter value is used only to determine
a date (no libraries are included or excluded).
You may specify up to 100 library names (including generic names) by
using the BYPASS parameter on the SAVALLCHG commands. This allows
you to tailor your save strategy if you have some unique processing
for certain libraries. For example, you may prefer to save the
entire contents of some libraries and then use SAVALLCHG on the rest
of the libraries.
A listing is produced to the SAVALLCHG spooled file with one line for
each library. The listing describes the number of objects saved, not
saved (some problem occurred such as an update lock exists on the
object), the create date of the library (if it is greater than the
reference date) and the volume identification of where the objects
were saved. If a library is bypassed, it is listed along with an
indication that it was bypassed.
If the INCLIB parameter lists one or more libraries, those are the
only libraries that will appear in the listing.
The SAVALLCHG commands must adopt the authority of QSECOFR in order
to access all the libraries (some may be private). The user of the
command must be authorized to the TAASAVALLC authorization list.
Which libraries are saved
-------------------------
If INCLIB is a list of libraries (the value is other than *ALL) a
REFDATE special value (such as *ALLUSR) is used only to determine a
date and time (not the libraries to be saved).
When INCLIB is not *ALL, a list of bypass libraries may be specified.
For example, INCLIB(A*) and BYPASS(ABC) would save all libraries
beginning with A except for ABC.
If REFDATE(*ALLUSR) is specified, certain # and Q libraries are
bypassed. See the SAVLIB command LIB parameter for a discussion of
what libraries are bypassed.
All other REFDATE values bypass the same libraries that are bypassed
by a SAVLIB(*NONSYS). For example, QSYS and QRPLOBJ are bypassed.
The Backup and Recovery Guide describes certain system libraries that
will not be saved if you specify SAVLIB LIB(*NONSYS).
If you want to bypass additional libraries, use the BYPASS parameter.
No corresponding function exists for SAVLIB LIB(*IBM). The reason
for this is that PTFs may be applied to system libraries which
contain code and this would cause objects to be saved. However, the
PTF index is only saved by a SAVLIB command. Consequently, a restore
of SAVCHGOBJ media would make the library and the index out of synch.
You should retain your PTFs until the next full library save.
Reference date and time
-----------------------
You may specify a reference date or use the special values *NONSYS,
*ALLUSR, or *SAVLIB. If *NONSYS or *ALLUSR are used, the last date
of the corresponding function for SAVLIB (e.g. SAVLIB LIB(*NONSYS))
is used. These values come from Qxxx data areas kept in QSYS which
are updated when the full save occurs.
If *SAVLIB is specified, the last date for each full save of a
library is used.
If a special value is entered for REFDATE, you may not specify a
reference time.
You may enter your own reference date and time if needed.
Expiration date
---------------
The SAVALLCHG commands are designed to be used with a media rotation
method. For example, assume you have three sets of media that you
rotate for backup. The command defaults are set to allow an
expiration date of 3 days from the day of entry. This prevents the
operator from making a gross mistake (such as continuous saves to the
same media), but still requires the operator to mount the correct
volumes.
If you have a set of media for each day of the week, you should
change the default or specify the proper value.
Volume ID
---------
The VOL parameter is supported on both the SAVALLCHG and SAVALLSAVF
commands. The default is *MOUNTED which is the same as the normal
Save commands.
A 4 character volume ID can be entered in which case the command will
append 01, 02...50. For example, if you specify ABCD, the volume IDs
requested will be ABCD01, ABCD02...ABCD50. If you use this
technique, you must initialize your volumes with the corresponding
names. Note that you must enter 4 characters (ABC cannot be used as
it is only 3 characters).
The advantage of this approach is to assist the operator in mounting
the correct tapes and in the correct sequence. The system save
commands will ensure the names match and the volumes appear in
sequence (Not all 50 must appear). If an error occurs, a message is
sent to QSYSOPR.
If you use a media rotation method, you would want to name the first
set SETA and the 2nd SETB or some such method. You can either
require the operator to enter the 'set name' on the provided Save
commands or you could place the commands in a CL Program and prompt
the operator for the name of the set to be used. The TAA Tool PMTOPR
could be used to help ensure that the operator was entering a correct
set name.
SAVALLCHG also supports the VOLID parameter to allow a specific list
of Volume IDs to be entered if VOL(*VOLLIST) is specified.
The advantages of expiration date and Volume ID are to help ensure
that the operator is using the correct media. Neither, either or
both techniques may be used.
Considerations
--------------
Some defaults are changed from the normal SAVCHGOBJ command. These
are described in the command parameters.
During processing of either SAVALLCHG command, status messages are
sent to the external message queue to inform the operator of which
library is being saved. Because of the way SAVCHGOBJ functions, you
may see messages stating that a library is being saved when the
system is actually saving a previous library to media.
If any objects cannot be saved or any other errors occur during the
processing, the commands will end with a CPF9898 escape message.
An option exists on all of the commands which defaults to *YES to run
the CHKSAVRST command. This command will produce a listing to a
spooled file for all the S/R messages which have occurred during the
job.
SAVALLCHG2 will create save files if the a library to be saved does
not have a corresponding save file in the specified library. If
BGNLIB is *FIRST, all the save files are cleared. If a library was
saved and has since been deleted, an empty save file will exist after
the next successful use of SAVALLCHG2. Periodically clearing the
library of save files will allow a refresh to occur.
SAVALLCHG Save all changes directly to tape *CMD
--------- ---------------------------------
The SAVALLCHG command saves all changes directly to tape.
If the command is interrupted, recovery can be achieved by specifying
the library name to begin with on the BGNLIB parameter. You can use
the job log to determine the last library which was correctly saved.
SAVALLCHG Command parameters *CMD
----------------------------
DEV This is the same parameter as on SAVCHGOBJ. It
supports a list of up to 2 devices.
VOL This is similar to the same parameter on SAVCHGOBJ.
The default of *MOUNTED is the same meaning to
ignore the volume ID on the tape. A 4 character
entry may be made to describe a set of volumes. (If
you enter other than *MOUNTED, it must be 4
characters). A two digit sequence number will be
appended to the name given. See the previous
discussion of Volume ID.
The special value *VOLLIST may be entered to specify
that a list of Volume IDs is being provided in the
VOLID parameter.
VOLID The default is *NONE meaning that the VOL parameter
determines the Volume IDs to be used. A list of up
to 40 Volume IDs may be entered if VOL(*VOLLIST) is
specified.
INCLIB A list of up to 100 library names (or generic names)
that will be saved. The default is *ALL meaning all
libraries are considered.
This parameter is helpful if you have multiple tape
devices and want to have multiple SAVALLCHG commands
running.
When one or more libraries are specified for INCLIB,
a REFDATE special value such as *ALLUSR is used only
to determine a reference date and time (it does not
control the libraries to be saved).
The BYPASS parameter may be used in conjunction with
INCLIB. For example INCLIB(A*) and BYPASS(ABC)
would save all libraries beginning with A except for
ABC.
BYPASS The library names (or generic names) to be bypassed.
*NONE is the default. If you have some test
libraries or a different save strategy for other
libraries that you do not want saved, enter up to
100 names.
Some libraries are implicitly bypassed. See the
REFDATE parameter.
LIBTYPE The type of library to be saved. The default is
*ALL for any library type.
*PROD may be specified to save only production
libraries (TYPE of PROD).
*TEST may be specified to save only production
libraries (TYPE of TEST).
SEQNBR The sequence number of the first file. The default
is 1 which differs from the normal SAV commands
which use a default of *END.
EXPDATE The expiration date of the tape. The default is
*DAY3 which differs from the SAVCHGOBJ default. The
special values *PERM or *DAY1, *DAY2 ... *DAY60 may
be entered or a specific date. The *DAYnn values
mean to add a number of days to the current date as
the expiration date. For example, *DAY3 causes a
expiration date of 3 days in the future.
If a specific date is entered, it must be in job
format and is checked to ensure that it is a valid
date between tomorrow and one year from today.
SAVSECDTA Whether to use the SAVSECDTA command before saving.
The default is *NO. SAVSECDTA saves the user
profiles and authorizations that are normally saved
by the SAVSYS command. The file created is
QFILEUPR. It cannot be restored by the RSTALLCHG
command. The file must be restored by the RSTUSRPRF
command.
SAVCFG Whether to use the SAVCFG command before saving.
The default is *NO. The configuration is saved to
the file QFILEIOC which can be used by the RSTCFG
command to restore the configuration.
OBJJRN Whether journaled files should be saved. The
default is *NO. If you are not journaling, you may
want to specify *YES to ensure that if journaling is
started as a debugging or problem determination aid,
that you continue to save the full file.
REFDATE The reference date to use for saving the changes.
The default is *NONSYS which means save any changes
from the last time a SAVLIB LIB(*NONSYS) was done.
*ALLUSR, *SAVLIB, or a specific date (use job
format) may be entered.
When INCLIB is not *ALL, a special value such as
*ALLUSR only determines the reference date/time and
does not control which libraries are saved (the
libraries to be saved are determined by the INCLIB
parameter).
The special values *ALLUSR or *NONSYS, or may only
be used if you have done the corresponding SAVLIB
command.
A value of *ALLUSR has the same definition as that
used by the system SAVLIB LIB(*ALLUSR) function.
See the help text for SAVLIB. This bypasses certain
# libraries and all Q libraries except those that
are specifically described in the help text such as
QGPL.
If the REFDATE value is not *ALLUSR, certain
libraries are bypassed based on the definition of
the SAVLIB LIB(*NONSYS) function. This bypasses
libraries such as QSYS, QRPLOBJ, and QSPL.
When *SAVLIB is specified, any new libraries that
have not been previously saved by a SAVLIB command
cannot be saved by SAVALLCHG (an error is noted).
REFTIME The reference time. The default is *NONE. A
specific time may also be specified. If a special
value is entered for REFDATE, REFTIME(*NONE) must be
specified.
ENDOPT Whether to rewind the tape at the end of the
command. The default is *REWIND. *LEAVE or *UNLOAD
can be specified. The option you specify does not
take affect until the last SAVCHGOBJ command is
issued. Only 300 libraries may be specified on a
single SAVCHGOBJ command so it may take multiple
commands to save the entire system. For all but the
last SAVCHGOBJ command, ENDOPT(*LEAVE) is specified.
UPDHST Whether to update the Save/Restore history
information. *YES is the default to update the
information.
*NO may be specified to not update the information.
CLEAR Whether to clear the files on the volume beginning
at the sequence number described. *ALL is the
default to clear all files. Expiration dates will
not be considered.
*NONE may be specified to check the expiration dates
of any existing files on the media.
*AFTER may be specified to clear all files after the
first volume. An inquiry message occurs if active
files exist on the first volume. For a more
complete definition, see the SAVLIB command.
*REPLACE may be specified to clear all files the
same as *ALL. For a more complete definition, see
the SAVLIB command.
SAVACT Whether to do a 'save while active' function. The
default is *NO. *LIB, *SYNCLIB, and *SYSDFN may be
specified. These are the same values as on
SAVCHGOBJ.
SAVACTWAIT A 3 part parameter that is the same as on SAVCHGOBJ.
The first part is the amount of time to wait for a
lock to be placed on an object. A value between 0
and 99999 may be specified or *NOMAX.
The second part is for the amount of time to wait
for pending record changes. The default is
*LOCKWAIT. A value between 0 and 99999 may be
specified, or *NOMAX, or *NOCMTBDY.
The third part is for the amount of time to wait for
transactions with other pending changes. The
default is *LOCKWAIT. A value between 0 and 99999
may be specified or *NOMAX.
SAVACTMSGQ The save active message queue. The qualified name
of a message queue to send messages to. The default
is *NONE. The library qualifier defaults to *LIBL.
See the discussion of this parameter on SAVCHGOBJ.
ACCPTH Whether to save access paths or not. The default is
*SYSVAL which uses the contents of the system value
QSAVACCPTH (system default causes *YES).
*YES may be specified to save access paths. A *NO
entry does not save the access paths.
QDTA Whether to save data queue data or not. The default
is *NONE meaning no data queue data will be saved.
*DTAQ may be specified to save the data queues and
their data. An object will exist in the save for
each data queue.
SAVFDTA Whether to save the SAVF object data. The default
is *YES. An entry of *NO will cause the SAVF
objects to be saved without the save file data.
DTACPR Whether to use data compress. The values are passed
thru to the SAVLIB command. For a complete
understanding of the parameter, see the SAVLIB
command.
The default is *YES to compress the data.
*NO may be specified so the data will not be
compressed.
*LOW may be specified to compress to a low degree.
*MEDIUM may be specified to compress to a medium
degree.
*HIGH may be specified to compress to a high degree.
COMPACT Whether to use device compaction.
*DEV is the default to use device compaction if it
exists. See the discussion of the same parameter
for SAVOBJ for how how it works in conjunction with
DTACPR.
*NO may be specified to avoid device compaction.
BGNLIB Beginning library to start at. The default is
*FIRST. This is designed as a recovery function to
allow a restart if the SAVALLCHG command is
interrupted. The value entered is used to compare
against each library name on the system. If the
library name is less than the value, the library is
ignored and will appear in the SAVALLCHG output as
bypassed.
Specifying a beginning library may also be used as a
testing function.
OMITOBJ Whether to omit objects from the save. By default,
no objects are omitted.
A list of 100 objects may be entered. The default
library value is *LIBL and default object type is
*ALL.
CHKSAVRST A *YES/*NO option for should the TAA Tool CHKSAVRST
command be run. The default is *YES. The CHKSAVRST
command will produce a spooled file of all the S/R
messages which have occurred during the job. When
the SAVALLCHG command begins and ends, a message is
sent to the job log with the CPF9898 message. This
will be picked up by the CHKSAVRST command to assist
you in determining which messages belong to the
SAVALLCHG command.
ERRORSONLY A *YES/*NO option for should the CHKSAVRST command
ERRORSONLY option be used. *YES is the default.
The default is designed to further 'net out' the job
log. The printed listing will essentially take the
library completion message information and print a
summary. If any objects were not saved, the detail
message will appear in the job log if the *YES
option is taken. The entry is ignored if
CHKSAVRST(*NO) is specified.
OUTPUT Whether a list of information about the saved
objects should be output to a print file or an
output file. This applies to the SAVSECDTA, SAVCFG,
and SAVCHGOBJ functions. The default is *NONE. See
also the INFTYPE parameter for the SAVCHGOBJ
function.
*PRINT may be specified to output to a spooled file
named QPSAVOBJ. A separate file is produced for
SAVSECDTA, SAVCFG, and each time SAVCHGOBJ is run
(up to 300 libraries per SAVCHGOBJ).
*OUTFILE may be specified to output to the file
named in the OUTFILE parameter.
OUTFILE The name of the file to be used for output if
OUTPUT(*OUTFILE) is specified. This applies to the
SAVSECDTA, SAVCFG, and SAVCHGOBJ functions. The
model file used is QASAVOBJ in QSYS with a format
name of QSRSAV.
The file will be created if it does not exist in the
named library. The qualified library name defaults
to *LIBL, but requires that the file exist with the
same format as QASAVOBJ. *CURLIB may also be
specified.
OUTMBR A 2 part parameter that specifies the member and
whether the member is cleared first if
OUTPUT(*OUTFILE) is specified. This applies to the
SAVSECDTA, SAVCFG, and SAVCHGOBJ functions.
The first part of the parameter is the member name
which defaults to *FIRST. A specific member may be
named.
The second part of the parameter determines whether
the member is cleared first. The default is
*REPLACE meaning the existing data is cleared first
before writing data. The value is used only on the
first save function. The *ADD function is used for
any additional save functions.
*ADD may be specified to add records to the output
member.
INFTYPE The type of information that is output if
OUTPUT(*PRINT) or OUTPUT(*OUTFILE) is specified.
This applies only to the SAVCHGOBJ function.
*OBJ is the default and outputs a record for each
object and library saved.
*LIB may be specified to output a record for each
library saved.
*MBR may be specified to output a record for each
library and object saved along with any members
saved for each object.
*ERR may be specified to output a record for each
library and object that was successfully saved along
with command information.
SAVALLCHG2 Save all changes to save files *CMD
---------- ------------------------------
The SAVALLCHG2 command outputs the changed objects to save files. If
the save file does not exist in the named library, it is created with
MAXRCDS(*NOMAX). You can create the save file yourself and specify a
MAXRCDS value to restrict the size of the save file. If the save
data exceeds the MAXRCDS value, an exception is noted and the next
library is saved.
All save files in the specified library are cleared at the beginning
of the command (unless BGNLIB is used). This allows for the
SAVALLSAVF command to produce a tape which will be the equivalent of
the SAVALLCHG command (i.e. it will contain all of the changed
objects on the system from the last reference date).
If the SAVALLCHG2 command is interrupted, recovery can be achieved by
specifying the BGNLIB parameter to determine which library to begin
at. This support assumes that you have already issued the SAVALLCHG2
command and some libraries were saved and that an interruption
occurred. If BGNLIB is specified, the save files are not cleared at
the beginning of the command.
You can determine from the job log, the library which was last saved
correctly.
The default is to always use software data compression. This helps
conserve the DASD size requirements.
SAVALLCHG2 Command parameters *CMD
-----------------------------
SAVFLIB The library containing the save files. The default
is SAVFLIB. To use the default, you must first
create the SAVFLIB library.
INCLIB A list of up to 100 library names (or generic names)
that will be saved. The default is *ALL meaning all
libraries are considered.
This parameter is helpful if you have multiple tape
devices and want to have multiple SAVALLCHG commands
running.
When one or more libraries are specified for INCLIB,
a REFDATE special value such as *ALLUSR is used only
to determine a reference date and time (it does not
control the libraries to be saved).
The BYPASS parameter may be used in conjunction with
INCLIB. For example INCLIB(A*) and BYPASS(ABC)
would save all libraries beginning with A except for
ABC.
BYPASS The library names (or generic names) to be bypassed.
*NONE is the default. If you have some test
libraries or a different save strategy for other
libraries that you do not want saved, enter up to
100 names.
Some libraries are implicitly bypassed. See the
REFDATE parameter.
LIBTYPE The type of library to be saved. The default is
*ALL for any library type.
*PROD may be specified to save only production
libraries (TYPE of PROD).
*TEST may be specified to save only production
libraries (TYPE of TEST).
SAVSECDTA Whether to use the SAVSECDTA command before saving.
The default is *NO. SAVSECDTA saves the user
profiles and authorizations that are normally saved
by the SAVSYS command. The save file created is
QFILEUPR. It will be saved by the SAVALLSAVF
command. The file cannot be restored by the
RSTALLCHG command. The file must be restored by the
RSTUSRPRF command.
SAVCFG Whether to use the SAVCFG command before saving.
The default is *NO. The configuration is saved to
the file QFILEIOC which can be used by the RSTCFG
command to restore the configuration.
OBJJRN Whether journaled files should be saved. The
default is *NO. If you are not journaling, you may
want to specify *YES to ensure that if journaling is
started as a debugging or problem determination aid,
that you continue to save the full file.
REFDATE The reference date to use for saving the changes.
The default is *NONSYS which means save any changes
from the last time a SAVLIB LIB(*NONSYS) was done
(See the later discussion).
*ALLUSR or *SAVLIB may also be used or a specific
date (use job format).
When INCLIB is not *ALL, a special value such as
*NONSYS only determines the reference date/time and
does not control which libraries are saved (the
libraries to be saved are determined by the INCLIB
parameter).
The special values *ALLUSR or *NONSYS may only be
used if you have done the corresponding SAVLIB
command.
A value of *ALLUSR has the same definition as that
used by the system SAVLIB LIB(*ALLUSR) function.
See the help text for SAVLIB. This bypasses certain
# libraries and all Q libraries except those that
are specifically described in the help text such as
QGPL.
If the REFDATE value is not *ALLUSR, certain
libraries are bypassed based on the definition of
the SAVLIB LIB(*NONSYS) function. This bypasses
libraries such as QSYS, QRPLOBJ, and QSPL.
If *SAVLIB is specified, the library will be
bypassed if it has never been saved. An error will
appear on the printed output.
REFTIME The reference time. The default is *NONE. A
specific time may also be specified. If REFDATE is
specified as *NONSYS or *SAVLIB, this value is
ignored.
UPDHST Whether to update the Save/Restore history
information. *YES is the default to update the
information.
*NO may be specified to not update the information.
SAVACT Whether to do a 'save while active' function. The
default is *NO. *LIB, *SYNCLIB, and *SYSDFN may be
specified. These are the same values as on
SAVCHGOBJ.
SAVACTWAIT A 3 part parameter that is the same as on SAVCHGOBJ.
The first part is the amount of time to wait for a
lock to be placed on an object. A value between 0
and 99999 may be specified or *NOMAX.
The second part is for the amount of time to wait
for pending record changes. The default is
*LOCKWAIT. A value between 0 and 99999 may be
specified, or *NOMAX, or *NOCMTBDY.
The third part is for the amount of time to wait for
transactions with other pending changes. The
default is *LOCKWAIT. A value between 0 and 99999
may be specified or *NOMAX.
SAVACTMSGQ The save active message queue. The qualified name
of a message queue to send messages to. The default
is *NONE. The library qualifier defaults to *LIBL.
See the discussion of this parameter on SAVCHGOBJ.
ACCPTH Whether to save access paths or not. The default is
*SYSVAL which uses the contents of the system value
QSAVACCPTH (system default causes *YES).
*YES may be specified to save access paths. A *NO
entry does not save the access paths.
QDTA Whether to save data queue data or not. The default
is *NONE meaning no data queue data will be saved.
*DTAQ may be specified to save the data queues and
their data. An object will exist in the save for
each data queue.
SAVFDTA Whether to save the SAVF object data. The default
is *YES. An entry of *NO will cause the SAVF
objects to be saved without the save file data.
DTACPR Whether to use data compress. The default is *YES
to help conserve DASD space requirements. This
differs from the normal SAV command default.
BGNLIB Beginning library to start at. The default is
*FIRST. This is designed as a recovery function to
allow a restart if the SAVALLCHG2 command is
interrupted. If a value is entered, all save files
will not be cleared at the beginning of the command.
The value entered is used to compare against each
library name on the system. If the library name is
less than the value, the library is ignored and will
appear in the SAVALLCHG 2 output as bypassed. If
the value is equal or greater, the save file is
cleared. The library is tested to see if it should
be bypassed and if not, a save is attempted.
Specifying a beginning library may also be used as a
testing function.
OMITOBJ Whether to omit objects from the save. By default,
no objects are omitted.
A list of 100 objects may be entered. The default
library value is *LIBL and default object type is
*ALL.
CHKSAVRST A *YES/*NO option for should the TAA Tool CHKSAVRST
be run. The default is *YES. The CHKSAVRST command
will produce a listing to the SAVALLCHG2 spooled
file of all the S/R messages which have occurred
during the job. When the SAVALLCHG2 command begins
and ends, a message is sent to the job log with the
CPF9898 message. This will be picked up by the
CHKSAVRST command to assist you in determining which
messages belong to the SAVALLCHG2 command.
ERRORSONLY A *YES/*NO option for should the CHKSAVRST command
ERRORSONLY option be used. *YES is the default.
The default is designed to further 'net out' the job
log. The printed listing will essentially take the
library completion message information and print a
summary. If any objects were not saved, the detail
message will appear in the job log if the *YES
option is taken. The entry is ignored if
CHKSAVRST(*NO) is specified.
SAVALLSAVF Command parameters *CMD
-----------------------------
The SAVALLSAVF command outputs all of the saved files in the
specified library to tape. It is the companion command for
SAVALLCHG2. SAVSAVFDTA outputs each save file.
If the SAVALLSAVF command is interrupted, recovery can be achieved by
specifying the BGNSAVF parameter to determine which save file to
begin at. This support assumes that you have already issued the
SAVALLSAVF command and some save files were saved and that an
interruption occurred. You can determine from the job log which save
file which was last saved correctly.
The completion message and the QPRINT output identify how many save
files were saved and how many had no data.
Command parameters
------------------
DEV This is the same parameter as on SAVSAVFDTA. It
supports a list of up to 2 devices.
SAVFLIB The library containing the save files. The default
is SAVFLIB. All the save files found are saved if
the BGNSAVF parameter is *FIRST.
VOL This is similar to the same parameter on SAVCHGOBJ.
The default of *MOUNTED is the same meaning to
ignore the volume ID on the tape. A 4 character
entry may be made to describe a set of volumes. (If
you enter other than *MOUNTED, it must be 4
characters). A two digit sequence number will be
appended to the name given. See the previous
discussion of Volume ID.
The special value *VOLLIST may be entered to specify
that a list of Volume IDs is being provided in the
VOLID parameter.
VOLID This is similar to the same parameter on SAVSAVFDTA.
The default of *MOUNTED is the same meaning to
ignore the volume ID on the tape. A 4 character
entry may be made to describe a set of volumes (If
you enter other than *MOUNTED, a 4 character entry
must be made). A two digit sequence number will be
appended to the name given. See the previous
discussion of Volume ID.
SEQNBR The sequence number of the first file. The default
is 1 which differs from the normal SAV commands
which use a default of *END.
EXPDATE The expiration date of the tape. The default is
*DAY3 which differs from the SAVCHGOBJ default. The
special values *PERM or *DAY1, *DAY2 ... *DAY60 may
be entered or a specific date. If a specific date
is entered, it must be in job format and is checked
to ensure that it is a valid date between tomorrow
and one year from today.
CLEAR Whether to clear the files on the media. The
default is *NONE. *ALL may be specified.
ENDOPT Whether to rewind the tape at the end of the
command. The default is *REWIND. *LEAVE or *UNLOAD
can be specified. The option you specify does not
take affect until the last SAVSAVFDTA command is
issued.
BGNSAVF Beginning save file to start at. The default is
*FIRST. This is designed as a recovery function to
allow a restart if the SAVALLSAVF command is
interrupted. The value entered is used to compare
against each save file in the library. If the save
file name is less than the value, the save file is
ignored and will appear in the listing as bypassed.
If you are using this for recovery, you will want to specify
VOL(*MOUNTED).
CHKSAVRST A *YES/*NO option for should the TAA Tool CHKSAVRST
be run. The default is *YES. The CHKSAVRST command
will produce a listing to QPRINT of all the S/R
messages which have occurred during the job. When
the SAVALLSAVF command begins and ends, a message is
sent to the job log with the CPF9898 message. This
will be picked up by the CHKSAVRST command to assist
you in determining which messages belong to the
SAVALLSAVF command.
ERRORSONLY A *YES/*NO option for should the CHKSAVRST command
ERRORSONLY option be used. *YES is the default.
The default is designed to further 'net out' the job
log. The printed listing will essentially take the
completion message information and print a summary.
If any objects were not saved, the detail message
will appear in the job log if the *YES option is
taken. The entry is ignored if CHKSAVRST(*NO) is
specified.
Security considerations
-----------------------
The SAVALLCHG commands must be created by a user with *ALLOBJ
authority (e.g. the Security Officer). The CL programs adopt the
authority of their owner while in execution in order to be able to
access all libraries and save all objects. The sub-program to
execute CHKSAVRST is done using TAASAVBC which is specifically
created as USEADPAUT(*NO). The commands and initial CL programs are
created to take their authorization from the TAASAVALLC authorization
list. A user must have *USE authority to the authorization list.
See the Implementation section.
Reference date option
---------------------
If a new library is created after the SAVLIB operation, it cannot be
saved by SAVCHGOBJ with REFDATE(*SAVLIB). It can be saved with a
specific date and time. For this reason, the SAVALLCHG commands
default the REFDATE value to *ALLUSR which is the date and time that
the last SAVLIB *ALLUSR was performed (Normally, only the SAVLIB
command updates the library object. SAVCHGOBJ does not). When a
special value is used for SAVLIB (such as *NONSYS), are timestamped
by the system as saved at the same date and time.
To use the default as it is intended, you must be saving the system
regularly with SAVLIB LIB(*ALLUSR).
Note that if you rename a library, the create date does not change.
Tailoring your save strategy
----------------------------
Not all of the SAVCHGOBJ parameters are supported on the SAVALLCHG
commands.
The SAVFDTA option exists on both SAVALLCHG and SAVALLCHG2 to allow
you to avoid the saving of save file object data. The default is
*YES which saves the object and save file data. Specifying *NO will
only save the SAVF object (not the data).
You may want to write a standard routine for daily saves. For
example, this could include:
- SAVALLCHG (may include some bypassed libraries)
- Full SAVLIB of certain critical libraries
- SAVDLO
You may have some libraries that you do not want saved by the
commands. This may be because you have an alternate means of backup,
the libraries are not worth saving or you want to use your own save
strategy for the library.
If you use SAVALLCHG2 and bypass some libraries so that you can use
your own save to a save file in the same library, you should specify
your own function after the SAVALLCHG2 command. For example:
SAVALLCHG2 SAVFLIB(BACKUP) BYPASS(xxx)
SAVCHGOBJ ... SAVF(BACKUP/xxx)
SAVLIB ... SAVF(BACKUP/yyy)
SAVALLSAVF ... SAVFLIB(BACKUP)
This sequence is needed because the SAVALLCHG2 command will clear all
of the save files in the specified library.
If you intend to use the companion restore command (RSTALLCHG) you
should consider starting a new media volume for either the SAVALLCHG
or SAVALLSAVF commands. The defaults assume this. The RSTALLCHG
command can be used with the media produced by either command.
If you have multiple tape drives and wish to use the overlap rewind
function, you can determine which drive was last used by accessing
the device name from the message data in the completion message (See
the example in the Backup and Recovery Programmers Guide on
Save/Restore which describes this). Assuming you do this, you will
want to use the SAVALLCHG command as the last save function since the
completion message will not pass back the last device used.
See the earlier comments about Expiration date and Volume ID that
could be used to assist your save strategy.
The SAVALLCHG commands will save everything they can. At the end of
the command, if some object could not be saved, CPF9898 will be sent
as an escape message. You may need to monitor for this message.
Restoring using a SAVALLCHG approach
------------------------------------
For the typical day to day needs to restore one or more objects,
there is little difference between a SAVOBJ/SAVLIB approach and a
SAVCHGOBJ approach. You must find the proper media and issue the
restore command for the objects required.
Since SAVCHGOBJ only saves the changed objects, you may need to
determine where the most current backup is for the required object.
If the object is still on the system, the last save information
(media volume ID, date and time) can be displayed with DSPOBJD.
In a disaster recovery situation, you will normally:
- Restore from the last SAVLIB *NONSYS (or equivalent)
- Restore from the last SAVCHGOBJ media
When restoring from the last SAVCHGOBJ media, you should specify
ALWOBJDIF(*ALL) to allow the restore of objects where there has been
an owner change or a data base file or member has been re-created.
If this occurs, there will be restore messages describing what the
system has done to the existing objects. Note that the RSTALLCHG
command defaults to ALWOBJDIF(*ALL).
Prerequisites
-------------
The following TAA Tools must be on your system.
ADDDAT Add date
CHKDAT Check date
CHKTIM Check time
CHKIBMLIB Check IBM library
CHKSAVRST Check save/restore
EDTVAR Edit variable
EXTLST Extract list
RTVALLUSR Retrieve *ALLUSR
RTVNONSYS Retrieve Non-System
SNDESCMSG Send escape message
SNDESCINF Send escape information
Implementation
--------------
The tool is ready to use, but a user must be authorized to the
TAASAVALLC authorization list. To authorize a user, use EDTAUTL or
specify:
ADDAUTLE AUTL(TAASAVALLC) USER(xxx) AUT(*USE)
Objects used by the tool
------------------------
Object Type Attribute Src member Src file
------ ----- --------- ---------- -----------
SAVALLCHG *CMD TAASAVC QATTCMD
SAVALLCHG2 *CMD TAASAVC2 QATTCMD
SAVALLSAVF *CMD TAASAVC3 QATTCMD
SAVALLP *FILE PF TAASAVCP QATTDDS
TAASAVCQ *FILE PF TAASAVCQ QATTDDS
TAASAVCC *PGM CLP TAASAVCC QATTCL
TAASAVCC2 *PGM CLP TAASAVCC2 QATTCL
TAASAVCC3 *PGM CLP TAASAVCC3 QATTCL
TAASAVCC4 *PGM CLP TAASAVCC4 QATTCL
TAASAVCC8 *PGM CLP TAASAVCC8 QATTCL
TAASAVCC9 *PGM CLP TAASAVCC9 QATTCL
TAASAVCR *PGM RPG TAASAVCR QATTRPG
TAASAVCR2 *PGM RPG TAASAVCR2 QATTRPG
Structure
---------
SAVALLCHG
TAASAVCC CL pgm
TAASAVCC9 CL pgm
TAASAVCR RPG pgm
SAVALLCHG2
TAASAVCC2 CL pgm
TAASAVCC9 CL pgm
TAASAVCC4 CL pgm
TAASAVCR RPG pgm
SAVALLSAVF
TAASAVCC3 CL pgm
TAASAVCC8 CL pgm
TAASAVCR2 RPG pgm
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