PG_STAT_DATABASE

PG_STAT_DATABASE displays the status and statistics of each database on the current node.

**Table 1** PG_STAT_DATABASE columns
Name	Type	Description
datid	oid	Database OID
datname	name	Database name
numbackends	integer	Number of backends currently connected to this database on the current node. This is the only column in this view that reflects the current state value. All columns return the accumulated value since the last reset.
xact_commit	bigint	Number of transactions in this database that have been committed on the current node
xact_rollback	bigint	Number of transactions in this database that have been rolled back on the current node
blks_read	bigint	Number of disk blocks read in this database on the current node
blks_hit	bigint	Number of disk blocks found in the buffer cache on the current node, that is, the number of blocks hit in the cache. (This only includes hits in the GaussDB(DWS) buffer cache, not in the file system cache.)
tup_returned	bigint	Number of rows returned by queries in this database on the current node
tup_fetched	bigint	Number of rows fetched by queries in this database on the current node
tup_inserted	bigint	Number of rows inserted in this database on the current node
tup_updated	bigint	Number of rows updated in this database on the current node
tup_deleted	bigint	Number of rows deleted from this database on the current node
conflicts	bigint	Number of queries canceled due to database recovery conflicts on the current node (conflicts occurring only on the standby server). For details, see PG_STAT_DATABASE_CONFLICTS.
temp_files	bigint	Number of temporary files created by this database on the current node. All temporary files are counted, regardless of why the temporary file was created (for example, sorting or hashing), and regardless of the log_temp_files setting.
temp_bytes	bigint	Size of temporary files written to this database on the current node. All temporary files are counted, regardless of why the temporary file was created, and regardless of the log_temp_files setting.
deadlocks	bigint	Number of deadlocks in this database on the current node
blk_read_time	double precision	Time spent reading data file blocks by backends in this database on the current node, in milliseconds
blk_write_time	double precision	Time spent writing into data file blocks by backends in this database on the current node, in milliseconds
stats_reset	timestamp with time zone	Time when the database statistics are reset on the current node