Undo System Functions
gs_undo_meta(type, zid, location)
Description: Specifies metadata of each module in the undo system.
Parameter description:
type (metadata type)
The value 0 indicates the metadata corresponding to Undo Zone(Record).
The value 1 indicates the metadata corresponding to Undo Zone(Transaction Slot).
The value 2 indicates the metadata corresponding to Undo Space(Record).
The value 3 indicates the metadata corresponding to Undo Space(Transaction Slot).
zid (undo zone ID)
The value –1 indicates the metadata of all undo zones.
The value range 0–1024 x 1024 indicates the metadata of the corresponding zone ID.
location (read location)
The value 0 indicates that data is read from the current memory.
The value 1 indicates that data is read from a physical file.
Return type: record
gs_undo_translot(type, zid)
Description: Specifies transaction slot information of the undo system.
Parameter description:
type (metadata type)
The value 0 indicates the metadata corresponding to Undo Zone(Record).
The value 1 indicates the metadata corresponding to Undo Zone(Transaction Slot).
The value 2 indicates the metadata corresponding to Undo Space(Record).
The value 3 indicates the metadata corresponding to Undo Space(Transaction Slot).
zid (undo zone ID)
The value –1 indicates the metadata of all undo zones.
The value range 0–1024 x 1024 indicates the metadata of the corresponding zone ID.
Return type: record