diff --git a/src/bin/scripts/.gitignore b/src/bin/scripts/.gitignore
new file mode 100644
index e62f4b0..0b9b786
*** a/src/bin/scripts/.gitignore
--- b/src/bin/scripts/.gitignore
***************
*** 7,12 ****
--- 7,13 ----
  /dropuser
  /reindexdb
  /vacuumdb
+ /pg_isready
  
  /dumputils.c
  /keywords.c
diff --git a/src/bin/scripts/Makefile b/src/bin/scripts/Makefile
new file mode 100644
index 0980b4c..cc9f2c0
*** a/src/bin/scripts/Makefile
--- b/src/bin/scripts/Makefile
*************** subdir = src/bin/scripts
*** 16,22 ****
  top_builddir = ../../..
  include $(top_builddir)/src/Makefile.global
  
! PROGRAMS = createdb createlang createuser dropdb droplang dropuser clusterdb vacuumdb reindexdb
  
  override CPPFLAGS := -I$(top_srcdir)/src/bin/pg_dump -I$(top_srcdir)/src/bin/psql -I$(libpq_srcdir) $(CPPFLAGS)
  
--- 16,22 ----
  top_builddir = ../../..
  include $(top_builddir)/src/Makefile.global
  
! PROGRAMS = createdb createlang createuser dropdb droplang dropuser clusterdb vacuumdb reindexdb pg_isready
  
  override CPPFLAGS := -I$(top_srcdir)/src/bin/pg_dump -I$(top_srcdir)/src/bin/psql -I$(libpq_srcdir) $(CPPFLAGS)
  
*************** dropuser: dropuser.o common.o dumputils.
*** 34,39 ****
--- 34,40 ----
  clusterdb: clusterdb.o common.o dumputils.o kwlookup.o keywords.o | submake-libpq
  vacuumdb: vacuumdb.o common.o | submake-libpq
  reindexdb: reindexdb.o common.o dumputils.o kwlookup.o keywords.o | submake-libpq
+ pg_isready: pg_isready.o common.o | submake-libpq submake-libpgport
  
  dumputils.c keywords.c: % : $(top_srcdir)/src/bin/pg_dump/%
  	rm -f $@ && $(LN_S) $< .
*************** install: all installdirs
*** 54,59 ****
--- 55,61 ----
  	$(INSTALL_PROGRAM) clusterdb$(X)  '$(DESTDIR)$(bindir)'/clusterdb$(X)
  	$(INSTALL_PROGRAM) vacuumdb$(X)   '$(DESTDIR)$(bindir)'/vacuumdb$(X)
  	$(INSTALL_PROGRAM) reindexdb$(X)  '$(DESTDIR)$(bindir)'/reindexdb$(X)
+ 	$(INSTALL_PROGRAM) pg_isready$(X) '$(DESTDIR)$(bindir)'/pg_isready$(X)
  
  installdirs:
  	$(MKDIR_P) '$(DESTDIR)$(bindir)'
diff --git a/src/bin/scripts/pg_isready.c b/src/bin/scripts/pg_isready.c
new file mode 100644
index ...be159fe
*** a/src/bin/scripts/pg_isready.c
--- b/src/bin/scripts/pg_isready.c
***************
*** 0 ****
--- 1,178 ----
+ /*-------------------------------------------------------------------------
+  *
+  * pg_isready --- checks the status of the PostgreSQL server
+  *
+  * Copyright (c) 2012, PostgreSQL Global Development Group
+  *
+  * src/bin/scripts/pg_isready.c
+  *
+  *-------------------------------------------------------------------------
+  */
+ 
+ #include "postgres_fe.h"
+ #include "common.h"
+ 
+ static void
+ help(const char *progname);
+ 
+ int
+ main(int argc, char **argv)
+ {
+ 	int c,optindex,opt_index = 0;
+ 
+ 	const char *pghost = NULL;
+ 	const char *pgport = NULL;
+ 	const char *pguser = NULL;
+ 	const char *pgdbname = NULL;
+ 
+ 	const char *keywords[4], *values[4];
+ 
+ 	bool quiet = false;
+ 
+ 	PGPing rv;
+ 	PQconninfoOption *connect_options, *conn_opt_ptr;
+ 
+ 	static struct option long_options[] = {
+ 			{"dbname", required_argument, NULL, 'd'},
+ 			{"host", required_argument, NULL, 'h'},
+ 			{"port", required_argument, NULL, 'p'},
+ 			{"quiet", no_argument, NULL, 'q'},
+ 			{"username", required_argument, NULL, 'U'},
+ 			{NULL, 0, NULL, 0}
+ 		};
+ 
+ 	handle_help_version_opts(argc, argv, "pg_isready", help);
+ 
+ 	while ((c = getopt_long(argc, argv, "d:h:p:qU:V", long_options, &optindex)) != -1)
+ 	{
+ 		switch (c)
+ 		{
+ 			case 'd':
+ 				pgdbname = pg_strdup(optarg);
+ 				break;
+ 			case 'h':
+ 				pghost = pg_strdup(optarg);
+ 				break;
+ 			case 'p':
+ 				pgport = pg_strdup(optarg);
+ 				break;
+ 			case 'q':
+ 				quiet = true;
+ 				break;
+ 			case 'U':
+ 				pguser = pg_strdup(optarg);
+ 				break;
+ 			default:
+ 				/*
+ 				 * We need to make sure we don't return 1 here because someone
+ 				 * checking the return code might infer unintended meaning
+ 				 */
+ 				exit(PQPING_NO_ATTEMPT);
+ 		}
+ 	}
+ 
+ 	connect_options = PQconndefaults();
+ 	conn_opt_ptr = connect_options;
+ 
+ 	while (conn_opt_ptr->keyword)
+ 	{
+ 		if (strncmp(conn_opt_ptr->keyword, "host", 5) == 0)
+ 		{
+ 			if (pghost)
+ 			{
+ 				keywords[opt_index] = conn_opt_ptr->keyword;
+ 				values[opt_index] = pghost;
+ 				opt_index++;
+ 			}
+ 			else if (conn_opt_ptr->val)
+ 				pghost = conn_opt_ptr->val;
+ 			else
+ 				pghost = DEFAULT_PGSOCKET_DIR;
+ 		}
+ 		else if (strncmp(conn_opt_ptr->keyword, "port", 5) == 0)
+ 		{
+ 			if (pgport)
+ 			{
+ 				keywords[opt_index] = conn_opt_ptr->keyword;
+ 				values[opt_index] = pgport;
+ 				opt_index++;
+ 			}
+ 			else if (conn_opt_ptr->val)
+ 				pgport = conn_opt_ptr->val;
+ 		}
+ 		else if (strncmp(conn_opt_ptr->keyword, "user", 5) == 0)
+ 		{
+ 			if (pguser)
+ 			{
+ 				keywords[opt_index] = conn_opt_ptr->keyword;
+ 				values[opt_index] = pguser;
+ 				opt_index++;
+ 			}
+ 			else if (conn_opt_ptr->val)
+ 				pguser = conn_opt_ptr->val;
+ 		}
+ 		else if (strncmp(conn_opt_ptr->keyword, "dbname", 7) == 0)
+ 		{
+ 			if (pgdbname)
+ 			{
+ 				keywords[opt_index] = conn_opt_ptr->keyword;
+ 				values[opt_index] = pgdbname;
+ 				opt_index++;
+ 			}
+ 			else if (conn_opt_ptr->val)
+ 				pgdbname = conn_opt_ptr->val;
+ 		}
+ 		conn_opt_ptr++;
+ 	}
+ 
+ 	keywords[opt_index] = NULL;
+ 	values[opt_index] = NULL;
+ 
+ 	rv = PQpingParams(keywords, values, 1);
+ 
+ 	if (!quiet)
+ 	{
+ 		printf("%s:%s - ", pghost, pgport);
+ 
+ 		switch (rv)
+ 		{
+ 			case PQPING_OK:
+ 				printf("accepting connections\n");
+ 				break;
+ 			case PQPING_REJECT:
+ 				printf("rejecting connections\n");
+ 				break;
+ 			case PQPING_NO_RESPONSE:
+ 				printf("no response\n");
+ 				break;
+ 			case PQPING_NO_ATTEMPT:
+ 				printf("no attempt\n");
+ 				break;
+ 			default:
+ 				printf("unknown\n");
+ 		}
+ 	}
+ 
+ 	PQconninfoFree(connect_options);
+ 
+ 	exit(rv);
+ }
+ 
+ static void
+ help(const char *progname)
+ {
+ 	printf(_("%s issues a connection check to a PostgreSQL database.\n\n"), progname);
+ 	printf(_("Usage:\n"));
+ 	printf(_("  %s [OPTION]...\n"), progname);
+ 
+ 	printf(_("\nOptions:\n"));
+ 	printf(_("  -d, --dbname=DBNAME      database name\n"));
+ 	printf(_("  -q, --quiet              run quietly\n"));
+ 	printf(_("  -V, --version            output version information, then exit\n"));
+ 	printf(_("  -?, --help               show this help, then exit\n"));
+ 
+ 	printf(_("\nConnection options:\n"));
+ 	printf(_("  -h, --host=HOSTNAME      database server host or socket directory\n"));
+ 	printf(_("  -p, --port=PORT          database server port\n"));
+ 	printf(_("  -U, --username=USERNAME  database username\n"));
+ }
diff --git a/src/interfaces/libpq/libpq-fe.h b/src/interfaces/libpq/libpq-fe.h
new file mode 100644
index a289ef3..663920a
*** a/src/interfaces/libpq/libpq-fe.h
--- b/src/interfaces/libpq/libpq-fe.h
*************** typedef enum
*** 110,115 ****
--- 110,120 ----
  	PQERRORS_VERBOSE			/* all the facts, ma'am */
  } PGVerbosity;
  
+ /*
+  * PGPing - The ordering of this enum should not be altered because the
+  * values are exposed externally via pg_isready.
+  */
+ 
  typedef enum
  {
  	PQPING_OK,					/* server is accepting connections */