Determines per-page fill factor during page splits for B-Tree structures.
Option can be set at the database (PUBLIC) or user level. When set at the database level, the value becomes the default for any new user, but has no impact on existing users. When set at the user level, overrides the PUBLIC value for that user only. No system privilege is required to set option for self. System privilege is required to set at database level or at user level for any user other than self.
Requires the SET ANY PUBLIC OPTION system privilege to set this option. Can be set temporary for an individual connection or for the PUBLIC role. Takes effect immediately.
B-Tree structures are used by the HG, LF, DT, TIME, and DTTM indexes. Splits of a B-Tree page try to leave the specified percentage empty to avoid splitting when new keys are inserted into the index.
Indexes reserve storage at the page level that can be allocated to new keys as additional data is inserted. Reserving space consumes additional disk space, but can help the performance of incremental inserts. If future plans include incremental inserts, and the new rows do not have values that are already present in the index, a nonzero value for GARRAY_PAGE_SPLIT_PAD_PERCENT may improve incremental insert performance.
If you do not plan to incrementally update the index, you can reduce the value of this option to save disk space.