18.14. Memory Purge
Postgres Pro Standard provides memory purge configuration parameters that can automatically replace data with zero bytes before it is deleted. For details, see Section 31.1.
wipe_file_on_delete(boolean)Replace a file with zero bytes before it is deleted.
Default:
onwipe_heaptuple_on_delete(boolean)Replace a row version with zero bytes before it is deleted.
Default:
onwipe_memctx_on_free(boolean)Clear random-access memory before it is freed. This parameter only controls the memory allocated as part of a particular context.
Default:
onwipe_mem_on_free(boolean)Clear random-access memory before it is freed. This parameter controls the memory that does not belong to any context.
Default:
onwipe_xlog_on_free(boolean)Replace WAL segments with zero bytes before they are deleted or overwritten.
Default:
on