SUMMARY_STAT_DATABASE

Contains statistics about each database in the cluster.

**Table 1** SUMMARY_STAT_DATABASE columns
Name	Type	Description
datname	name	Database name.
numbackends	bigint	Number of backends currently connected to this database. This is the only column in this view that returns a value reflecting the current state; all other columns return the accumulated values since the last reset.
xact_commit	numeric	Number of transactions in this database that have been committed.
xact_rollback	numeric	Number of transactions in this database that have been rolled back.
blks_read	numeric	Number of disk blocks read in this database.
blks_hit	numeric	Number of times disk blocks were found in the cache (that is, the buffer cache, not the file system cache of the OS), so that a read is not necessary
tup_returned	numeric	Number of rows returned by queries in this database
tup_fetched	numeric	Number of rows fetched by queries in this database
tup_inserted	bigint	Number of rows inserted by queries in this database
tup_updated	bigint	Number of rows updated by queries in this database
tup_deleted	bigint	Number of rows deleted by queries in this database
conflicts	bigint	Number of queries canceled due to database recovery conflicts (conflicts occurring only on the standby node). For details, see STAT_DATABASE_CONFLICTS.
temp_files	numeric	Number of temporary files created by queries in this database. 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	numeric	Total amount of data written to temporary files by queries in this database. 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 detected in this database.
blk_read_time	double precision	Time spent in reading data file blocks by backends in this database (unit: ms).
blk_write_time	double precision	Time spent in writing data file blocks by backends in this database (unit: ms).
stats_reset	timestamp with time zone	Time at which the current statistics were reset.