Appendix C - Adabas Checkpoints

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# Appendix C - Adabas Checkpoints

The following checkpoints are written by the Adabas utilities:

> SYNC

>   A checkpoint made during nucleus initialization, termination or cancel processing; during the ADAOPR function FEOF = PLOG; due to ADABCK NEW_PLOG processing; or during the function ADAOPR EXT_BACKUP=CONTINUE.

> SYNP

>   A checkpoint made by a utility that requires privileged control. Such utilities can perform updating without using the Adabas nucleus.

> SYNX

>   A checkpoint made by a utility that requires exclusive control (EXF) of one or more files.

The following tables shows which utilities or utility functions write which checkpoints. Where appropriate, information about the online/offline status of the database is also provided.

Utility | Utility Function | Checkpoint | Database Online/Offline, Comments
--- | --- | --- | ---
ADABCK | DUMP | SYNX | The nucleus is only required when there is an AUTORESTART pending at the end of this function.
EXU_DUMP | SYNC | The nucleus is only required when there is an AUTORESTART pending at the end of this function.
OVERLAY | SYNP | The nucleus must NOT be active for overlay of the database or system files. The nucleus is not required for overlay of files.
RESTORE | SYNP | The nucleus must NOT be active for restore of the database or system files. The nucleus is not required for restore of files.
ADACVT |  | SYNP | ADACVT writes a SYNP checkpoint following successful completion.
ADADBM | ADD_CONTAINER | SYNP |
ADD_FIELDS | SYNP | offline
SYNX | online
ALLOCATE | SYNP |
BT | SYNP | offline
CHANGE_FILEDS | SYNP | offline
SYNX | online
DEALLOCATE | SYNP |
DELCP | SYNP |
DELETE | SYNP | offline
SYNX | online
DROP_FIELDS | SYNP | offline
SYNX | online
DROP_LOBFILE | SYNP |
EXTEND_CONTAINER | SYNP |
NEW_DBID | SYNP |
NEWWORK | SYNP |
PGM_REFRESH | SYNP |
RECORDSPANNING | SYNP |
RECOVER | SYNP |
REDUCE_CONTAINER | SYNP |
REFRESH | SYNP | offline
SYNX | online
REMOVE_CONTAINER | SYNP |
REMOVE_REPLICATION | SYNP | offline
RENAME | SYNP |
RENUMBER | SYNP | offline
SYNX | online
REPLICATION_FILES | SYNP | offline
SYNX | online
RESET | SYNX |
REUSE | SYNP |
SECURITY | SYNP | offline
SYFMAX | SYNP | offline
SYNX | online
ADAFDU | - | SYNP | offline
SYNX | online
ADAINV | INVERT | SYNP |
REINVERT | SYNP |
RELEASE | SYNP |
RESET_UQ | SYNP |
SET_UQ | SYNP |
VERIFY | SYNX |
ADAMUP | UPDATE | SYNP |
ADANUC | On startup and termination | SYNC |
ADAOPR | FEOF=PLOG | SYNC | online After the FEOF=PLOG checkpoint, ADANUC writes a SYNC checkpoint for the start of the new PLOG session.
EXT_BACKUP=PREPARE | SYNX | online Written at EXT_BACKUP started
EXT_BACKUP=CONTINUE | SYNC | online Written at FEOF=PLOG
SYNX | online Written at EXT_BACKUP terminated
ADAORD | EXPORT | SYNX |
IMPORT | SYNP |
IMPORT_RENUMBER | SYNP |
REORDER | SYNP |
ADARBA | INITIALIZE | SYNX | online In addition, an ADAFDU checkpoint is generated, indicating the RBAC system file number.
ADAREC | REGENERATE | SYNX |
ADAULD | DBID | SYNX |