The $v_hist_queries view shows information about the completed queries and their status, runtime seconds (for total, cumulative queued, prep time and GRA time), and number of plans. The $v_hist_successful_queries and $v_hist_unsuccessful_queries views show the same information as $v_hist_queries, but filters that information depending on whether each query was successful.
Name | Description |
---|---|
npsid | A unique ID for the IBM® Netezza® system. This value is generated as a sequence on the target database where this view is defined. |
npsinstanceid | The instance ID of the nzstart command for the source Netezza system. |
opid | Operation ID, which is used as a foreign key from query epilog, overflow and plan, table, column access tables. |
logentryid | This ID and the NPS ID (npsid) and instance ID (npsinstanceid) form a foreign key into the hist_log_entry_n table. |
sessionid | The session ID. This ID is NULL for a failed authentication. |
dbname | The name of the database to which the session is connected. |
queryid | The unique checksum of the query. |
query | The first 8 KB of the query text. |
submittime | The time the query was submitted to Postgres. |
finishtime | The time the query finished execution. |
runtime |
The total query run time (as interval and in seconds). |
status |
The Query Completion status (as integer and text string). |
queuetime |
The amount of time the query was queued (as interval and in seconds). |
preptime |
The amount of time the query spent in "prep" stage (as interval and in seconds). |
gratime |
The amount of time that the query spent in GRA (as interval and in seconds). |
numplans | The number of plans generated. |
numrestarts | The cumulative number of times the plans were restarted. |
client_user_id | The user ID under which the application that submitted the query. This field is available only in database version 3 or later. |
client_application_name | The name of the application that submitted the query associated with the plan. This value is specified for the session, and is usually set by an application. This field is available only in database version 3 or later. |
client_workstation_name | The host name of the workstation on which the application that submitted the query associated with the plan runs. This value is specified for the session, and is usually set by an application. This field is available only in database version 3 or later. |
client_accounting_string | The value of the accounting string. This value is specified for the session, and is usually set by an application. This field is available only in database version 3 or later. |