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v3.1

Documentation:v3.1

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SUMMARY_STAT_DATABASE

SUMMARY_STAT_DATABASE contains every row of each database in the cluster, showing database-wide statistics.

Table 1 SUMMARY_STAT_DATABASE

Name Type Description
datname name Name of the database
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 buffer cache (unnecessary as the number includes only hits in the MogDB buffer cache)
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 server). 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 reading data file blocks by backends in this database (unit: ms)
blk_write_time double precision Time spent writing into data file blocks by backends in this database (unit: ms)
stats_reset timestamp with time zone Time at which the current statistics were reset
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