-<!-- $PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.41 2006/12/02 09:29:51 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/monitoring.sgml,v 1.42 2006/12/06 18:06:46 neilc Exp $ -->
<chapter id="monitoring">
<title>Monitoring Database Activity</title>
<tbody>
<row>
<entry><structname>pg_stat_activity</></entry>
- <entry>One row per server process, showing database OID, database name,
- process <acronym>ID</>, user OID, user name, current query, query's
- waiting status, time at
- which the current query began execution, time at which the process
- was started, and client's address and port number. The columns
- that report data on the current query are available unless the
- parameter <varname>stats_command_string</varname> has been
- turned off. Furthermore, these columns are only visible if the
- user examining the view is a superuser or the same as the user
- owning the process being reported on.
+ <entry>One row per server process, showing database OID, database
+ name, process <acronym>ID</>, user OID, user name, current query,
+ query's waiting status, time at which the current transaction and
+ current query began execution, time at which the process was
+ started, and client's address and port number. The columns that
+ report data on the current query are available unless the parameter
+ <varname>stats_command_string</varname> has been turned off.
+ Furthermore, these columns are only visible if the user examining
+ the view is a superuser or the same as the user owning the process
+ being reported on.
</entry>
</row>
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.229 2006/11/23 01:14:59 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.230 2006/12/06 18:06:47 neilc Exp $
*
*-------------------------------------------------------------------------
*/
* GetCurrentTimestamp() call (which'd be expensive anyway).
*/
xactStartTimestamp = stmtStartTimestamp;
+ pgstat_report_txn_timestamp(xactStartTimestamp);
/*
* initialize current transaction state fields
/* smgrcommit already done */
AtEOXact_Files();
pgstat_count_xact_commit();
+ pgstat_report_txn_timestamp(0);
CurrentResourceOwner = NULL;
ResourceOwnerDelete(TopTransactionResourceOwner);
smgrabort();
AtEOXact_Files();
pgstat_count_xact_rollback();
+ pgstat_report_txn_timestamp(0);
/*
* State remains TRANS_ABORT until CleanupTransaction().
*
* Copyright (c) 1996-2006, PostgreSQL Global Development Group
*
- * $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.32 2006/11/24 21:18:42 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/catalog/system_views.sql,v 1.33 2006/12/06 18:06:47 neilc Exp $
*/
CREATE VIEW pg_roles AS
U.rolname AS usename,
pg_stat_get_backend_activity(S.backendid) AS current_query,
pg_stat_get_backend_waiting(S.backendid) AS waiting,
+ pg_stat_get_backend_txn_start(S.backendid) AS txn_start,
pg_stat_get_backend_activity_start(S.backendid) AS query_start,
pg_stat_get_backend_start(S.backendid) AS backend_start,
pg_stat_get_backend_client_addr(S.backendid) AS client_addr,
*
* Copyright (c) 2001-2006, PostgreSQL Global Development Group
*
- * $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.140 2006/11/21 20:59:52 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/postmaster/pgstat.c,v 1.141 2006/12/06 18:06:47 neilc Exp $
* ----------
*/
#include "postgres.h"
beentry->st_procpid = MyProcPid;
beentry->st_proc_start_timestamp = proc_start_timestamp;
beentry->st_activity_start_timestamp = 0;
+ beentry->st_txn_start_timestamp = 0;
beentry->st_databaseid = MyDatabaseId;
beentry->st_userid = userid;
beentry->st_clientaddr = clientaddr;
Assert((beentry->st_changecount & 1) == 0);
}
+/*
+ * Set the current transaction start timestamp to the specified
+ * value. If there is no current active transaction, this is signified
+ * by 0.
+ */
+void
+pgstat_report_txn_timestamp(TimestampTz tstamp)
+{
+ volatile PgBackendStatus *beentry = MyBEEntry;
+
+ if (!pgstat_collect_querystring || !beentry)
+ return;
+
+ /*
+ * Update my status entry, following the protocol of bumping
+ * st_changecount before and after. We use a volatile pointer
+ * here to ensure the compiler doesn't try to get cute.
+ */
+ beentry->st_changecount++;
+ beentry->st_txn_start_timestamp = tstamp;
+ beentry->st_changecount++;
+ Assert((beentry->st_changecount & 1) == 0);
+}
/* ----------
* pgstat_report_waiting() -
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.34 2006/10/04 00:29:59 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/pgstatfuncs.c,v 1.35 2006/12/06 18:06:47 neilc Exp $
*
*-------------------------------------------------------------------------
*/
extern Datum pg_stat_get_backend_activity(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_waiting(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_activity_start(PG_FUNCTION_ARGS);
+extern Datum pg_stat_get_backend_txn_start(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_start(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_client_addr(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_client_port(PG_FUNCTION_ARGS);
PG_RETURN_TIMESTAMPTZ(result);
}
+
+Datum
+pg_stat_get_backend_txn_start(PG_FUNCTION_ARGS)
+{
+ int32 beid = PG_GETARG_INT32(0);
+ TimestampTz result;
+ PgBackendStatus *beentry;
+
+ if ((beentry = pgstat_fetch_stat_beentry(beid)) == NULL)
+ PG_RETURN_NULL();
+
+ if (!superuser() && beentry->st_userid != GetUserId())
+ PG_RETURN_NULL();
+
+ result = beentry->st_txn_start_timestamp;
+
+ if (result == 0) /* not in a transaction */
+ PG_RETURN_NULL();
+
+ PG_RETURN_TIMESTAMPTZ(result);
+}
+
+
Datum
pg_stat_get_backend_start(PG_FUNCTION_ARGS)
{
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.360 2006/11/24 21:18:42 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.361 2006/12/06 18:06:47 neilc Exp $
*
*-------------------------------------------------------------------------
*/
*/
/* yyyymmddN */
-#define CATALOG_VERSION_NO 200611241
+#define CATALOG_VERSION_NO 200612061
#endif
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.429 2006/11/28 19:18:44 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.430 2006/12/06 18:06:47 neilc Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
DESCR("Statistics: Is backend currently waiting for a lock");
DATA(insert OID = 2094 ( pg_stat_get_backend_activity_start PGNSP PGUID 12 f f t f s 1 1184 "23" _null_ _null_ _null_ pg_stat_get_backend_activity_start - _null_));
DESCR("Statistics: Start time for current query of backend");
+DATA(insert OID = 2857 ( pg_stat_get_backend_txn_start PGNSP PGUID 12 f f t f s 1 1184 "23" _null_ _null_ _null_ pg_stat_get_backend_txn_start - _null_));
+DESCR("Statistics: Start time for backend's current transaction");
DATA(insert OID = 1391 ( pg_stat_get_backend_start PGNSP PGUID 12 f f t f s 1 1184 "23" _null_ _null_ _null_ pg_stat_get_backend_start - _null_));
DESCR("Statistics: Start time for current backend session");
DATA(insert OID = 1392 ( pg_stat_get_backend_client_addr PGNSP PGUID 12 f f t f s 1 869 "23" _null_ _null_ _null_ pg_stat_get_backend_client_addr - _null_));
*
* Copyright (c) 2001-2006, PostgreSQL Global Development Group
*
- * $PostgreSQL: pgsql/src/include/pgstat.h,v 1.50 2006/10/04 00:30:06 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/pgstat.h,v 1.51 2006/12/06 18:06:47 neilc Exp $
* ----------
*/
#ifndef PGSTAT_H
/* The entry is valid iff st_procpid > 0, unused if st_procpid == 0 */
int st_procpid;
- /* Times of backend process start and current activity start */
+ /* Times when current backend, transaction, and activity started */
TimestampTz st_proc_start_timestamp;
+ TimestampTz st_txn_start_timestamp;
TimestampTz st_activity_start_timestamp;
/* Database OID, owning user's OID, connection client address */
extern void pgstat_bestart(void);
extern void pgstat_report_activity(const char *what);
+extern void pgstat_report_txn_timestamp(TimestampTz tstamp);
extern void pgstat_report_waiting(bool waiting);
extern void pgstat_initstats(PgStat_Info *stats, Relation rel);
pg_rules | SELECT n.nspname AS schemaname, c.relname AS tablename, r.rulename, pg_get_ruledef(r.oid) AS definition FROM ((pg_rewrite r JOIN pg_class c ON ((c.oid = r.ev_class))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (r.rulename <> '_RETURN'::name);
pg_settings | SELECT a.name, a.setting, a.unit, a.category, a.short_desc, a.extra_desc, a.context, a.vartype, a.source, a.min_val, a.max_val FROM pg_show_all_settings() a(name text, setting text, unit text, category text, short_desc text, extra_desc text, context text, vartype text, source text, min_val text, max_val text);
pg_shadow | SELECT pg_authid.rolname AS usename, pg_authid.oid AS usesysid, pg_authid.rolcreatedb AS usecreatedb, pg_authid.rolsuper AS usesuper, pg_authid.rolcatupdate AS usecatupd, pg_authid.rolpassword AS passwd, (pg_authid.rolvaliduntil)::abstime AS valuntil, pg_authid.rolconfig AS useconfig FROM pg_authid WHERE pg_authid.rolcanlogin;
- pg_stat_activity | SELECT d.oid AS datid, d.datname, pg_stat_get_backend_pid(s.backendid) AS procpid, pg_stat_get_backend_userid(s.backendid) AS usesysid, u.rolname AS usename, pg_stat_get_backend_activity(s.backendid) AS current_query, pg_stat_get_backend_waiting(s.backendid) AS waiting, pg_stat_get_backend_activity_start(s.backendid) AS query_start, pg_stat_get_backend_start(s.backendid) AS backend_start, pg_stat_get_backend_client_addr(s.backendid) AS client_addr, pg_stat_get_backend_client_port(s.backendid) AS client_port FROM pg_database d, (SELECT pg_stat_get_backend_idset() AS backendid) s, pg_authid u WHERE ((pg_stat_get_backend_dbid(s.backendid) = d.oid) AND (pg_stat_get_backend_userid(s.backendid) = u.oid));
+ pg_stat_activity | SELECT d.oid AS datid, d.datname, pg_stat_get_backend_pid(s.backendid) AS procpid, pg_stat_get_backend_userid(s.backendid) AS usesysid, u.rolname AS usename, pg_stat_get_backend_activity(s.backendid) AS current_query, pg_stat_get_backend_waiting(s.backendid) AS waiting, pg_stat_get_backend_txn_start(s.backendid) AS txn_start, pg_stat_get_backend_activity_start(s.backendid) AS query_start, pg_stat_get_backend_start(s.backendid) AS backend_start, pg_stat_get_backend_client_addr(s.backendid) AS client_addr, pg_stat_get_backend_client_port(s.backendid) AS client_port FROM pg_database d, (SELECT pg_stat_get_backend_idset() AS backendid) s, pg_authid u WHERE ((pg_stat_get_backend_dbid(s.backendid) = d.oid) AND (pg_stat_get_backend_userid(s.backendid) = u.oid));
pg_stat_all_indexes | SELECT c.oid AS relid, i.oid AS indexrelid, n.nspname AS schemaname, c.relname, i.relname AS indexrelname, pg_stat_get_numscans(i.oid) AS idx_scan, pg_stat_get_tuples_returned(i.oid) AS idx_tup_read, pg_stat_get_tuples_fetched(i.oid) AS idx_tup_fetch FROM (((pg_class c JOIN pg_index x ON ((c.oid = x.indrelid))) JOIN pg_class i ON ((i.oid = x.indexrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (c.relkind = ANY (ARRAY['r'::"char", 't'::"char"]));
pg_stat_all_tables | SELECT c.oid AS relid, n.nspname AS schemaname, c.relname, pg_stat_get_numscans(c.oid) AS seq_scan, pg_stat_get_tuples_returned(c.oid) AS seq_tup_read, (sum(pg_stat_get_numscans(i.indexrelid)))::bigint AS idx_scan, ((sum(pg_stat_get_tuples_fetched(i.indexrelid)))::bigint + pg_stat_get_tuples_fetched(c.oid)) AS idx_tup_fetch, pg_stat_get_tuples_inserted(c.oid) AS n_tup_ins, pg_stat_get_tuples_updated(c.oid) AS n_tup_upd, pg_stat_get_tuples_deleted(c.oid) AS n_tup_del, pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum, pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum, pg_stat_get_last_analyze_time(c.oid) AS last_analyze, pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze FROM ((pg_class c LEFT JOIN pg_index i ON ((c.oid = i.indrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (c.relkind = ANY (ARRAY['r'::"char", 't'::"char"])) GROUP BY c.oid, n.nspname, c.relname;
pg_stat_database | SELECT d.oid AS datid, d.datname, pg_stat_get_db_numbackends(d.oid) AS numbackends, pg_stat_get_db_xact_commit(d.oid) AS xact_commit, pg_stat_get_db_xact_rollback(d.oid) AS xact_rollback, (pg_stat_get_db_blocks_fetched(d.oid) - pg_stat_get_db_blocks_hit(d.oid)) AS blks_read, pg_stat_get_db_blocks_hit(d.oid) AS blks_hit FROM pg_database d;
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