ALTER DATABASE — change the behavior of the database
ALTER DATABASE alter_database_command
alter_database_command can be one or more of the following:
CHANGE ENCRYPTION TYPE encryption_type RUN GARBAGE COLLECTION target_size
encryption_type is one of the following:
target_size is the desired amount of used memory (in bytes).
ALTER DATABASE to change the operation of the database.
NuoDB supports these encryption types:
No storage encryption is enabled on the database
Storage is encrypted with the AES-128 cipher
The current storage encryption type of the database can be determined by querying the
DISK_ENCRYPTION column in the
RUN GARBAGE COLLECTION command is used to request that each SM and TE in the database perform one round of flushing cached data from memory.
This process will stop either when the
target_size memory usage is reached, or when all unused data has been released.
This command will not force memory that is in use by the database to be released.
It is best to allow each process to perform its own memory management: users should not need this command under normal circumstances.
|Flushing cached data from memory can significantly impact the performance of the database, until the caches are re-populated. This command may be suggested by NuoDB Support in specific situations.|