diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c
new file mode 100644
index 82330cb..70e2fd4
*** a/src/bin/pg_dump/pg_dump.c
--- b/src/bin/pg_dump/pg_dump.c
*************** extern int	optind,
*** 67,72 ****
--- 67,74 ----
  			opterr;
  
  
+ int pg_upgrade=0;
+ 
  typedef struct
  {
  	const char *descr;			/* comment for an object */
*************** main(int argc, char **argv)
*** 345,350 ****
--- 347,353 ----
  		{"inserts", no_argument, &dump_inserts, 1},
  		{"lock-wait-timeout", required_argument, NULL, 2},
  		{"no-tablespaces", no_argument, &outputNoTablespaces, 1},
+ 		{"pg_upgrade", no_argument, &pg_upgrade, 1},
  		{"quote-all-identifiers", no_argument, &quote_all_identifiers, 1},
  		{"role", required_argument, NULL, 3},
  		{"section", required_argument, NULL, 5},
*************** main(int argc, char **argv)
*** 608,613 ****
--- 611,617 ----
  	/*
  	 * Start transaction-snapshot mode transaction to dump consistent data.
  	 */
+ 	if (!pg_upgrade) {
  	ExecuteSqlStatement(fout, "BEGIN");
  	if (fout->remoteVersion >= 90100)
  	{
*************** main(int argc, char **argv)
*** 623,628 ****
--- 627,633 ----
  	else
  		ExecuteSqlStatement(fout,
  							"SET TRANSACTION ISOLATION LEVEL SERIALIZABLE");
+ 	};
  
  	/* Select the appropriate subquery to convert user IDs to names */
  	if (fout->remoteVersion >= 80100)
*************** getTables(Archive *fout, int *numTables)
*** 4349,4354 ****
--- 4354,4360 ----
  		 * NOTE: it'd be kinda nice to lock other relations too, not only
  		 * plain tables, but the backend doesn't presently allow that.
  		 */
+ 		if (!pg_upgrade) {
  		if (tblinfo[i].dobj.dump && tblinfo[i].relkind == RELKIND_RELATION)
  		{
  			resetPQExpBuffer(query);
*************** getTables(Archive *fout, int *numTables)
*** 4359,4364 ****
--- 4365,4371 ----
  											 tblinfo[i].dobj.name));
  			ExecuteSqlStatement(fout, query->data);
  		}
+ 		};
  
  		/* Emit notice if join for owner failed */
  		if (strlen(tblinfo[i].rolname) == 0)