diff --git a/contrib/hstore_plpython/hstore_plpython.c b/contrib/hstore_plpython/hstore_plpython.c
index 22366bd40f..218e6612b1 100644
--- a/contrib/hstore_plpython/hstore_plpython.c
+++ b/contrib/hstore_plpython/hstore_plpython.c
@@ -93,6 +93,10 @@ hstore_to_plpython(PG_FUNCTION_ARGS)
 	PyObject   *dict;
 
 	dict = PyDict_New();
+	if (!dict)
+		ereport(ERROR,
+				(errcode(ERRCODE_OUT_OF_MEMORY),
+				 errmsg("out of memory")));
 
 	for (i = 0; i < count; i++)
 	{
diff --git a/contrib/ltree_plpython/ltree_plpython.c b/contrib/ltree_plpython/ltree_plpython.c
index ae9b90dd10..e88636a0a9 100644
--- a/contrib/ltree_plpython/ltree_plpython.c
+++ b/contrib/ltree_plpython/ltree_plpython.c
@@ -46,6 +46,10 @@ ltree_to_plpython(PG_FUNCTION_ARGS)
 	ltree_level *curlevel;
 
 	list = PyList_New(in->numlevel);
+	if (!list)
+		ereport(ERROR,
+				(errcode(ERRCODE_OUT_OF_MEMORY),
+				 errmsg("out of memory")));
 
 	curlevel = LTREE_FIRST(in);
 	for (i = 0; i < in->numlevel; i++)
diff --git a/src/pl/plpython/plpy_cursorobject.c b/src/pl/plpython/plpy_cursorobject.c
index 10ca786fbc..9467f64808 100644
--- a/src/pl/plpython/plpy_cursorobject.c
+++ b/src/pl/plpython/plpy_cursorobject.c
@@ -457,17 +457,24 @@ PLy_cursor_fetch(PyObject *self, PyObject *args)
 
 			Py_DECREF(ret->rows);
 			ret->rows = PyList_New(SPI_processed);
-
-			PLy_input_setup_tuple(&cursor->result, SPI_tuptable->tupdesc,
-								  exec_ctx->curr_proc);
-
-			for (i = 0; i < SPI_processed; i++)
+			if (!ret->rows)
 			{
-				PyObject   *row = PLy_input_from_tuple(&cursor->result,
-													   SPI_tuptable->vals[i],
-													   SPI_tuptable->tupdesc);
+				Py_DECREF(ret);
+				ret = NULL;
+			}
+			else
+			{
+				PLy_input_setup_tuple(&cursor->result, SPI_tuptable->tupdesc,
+									  exec_ctx->curr_proc);
 
-				PyList_SetItem(ret->rows, i, row);
+				for (i = 0; i < SPI_processed; i++)
+				{
+					PyObject   *row = PLy_input_from_tuple(&cursor->result,
+														   SPI_tuptable->vals[i],
+														   SPI_tuptable->tupdesc);
+
+					PyList_SetItem(ret->rows, i, row);
+				}
 			}
 		}
 
diff --git a/src/pl/plpython/plpy_exec.c b/src/pl/plpython/plpy_exec.c
index 02d7d2ad5f..9d2341a4a3 100644
--- a/src/pl/plpython/plpy_exec.c
+++ b/src/pl/plpython/plpy_exec.c
@@ -420,6 +420,9 @@ PLy_function_build_args(FunctionCallInfo fcinfo, PLyProcedure *proc)
 	PG_TRY();
 	{
 		args = PyList_New(proc->nargs);
+		if (!args)
+			return NULL;
+
 		for (i = 0; i < proc->nargs; i++)
 		{
 			PLyDatumToOb *arginfo = &proc->args[i];
@@ -693,7 +696,7 @@ PLy_trigger_build_args(FunctionCallInfo fcinfo, PLyProcedure *proc, HeapTuple *r
 	{
 		pltdata = PyDict_New();
 		if (!pltdata)
-			PLy_elog(ERROR, "could not create new dictionary while building trigger arguments");
+			return NULL;
 
 		pltname = PyString_FromString(tdata->tg_trigger->tgname);
 		PyDict_SetItemString(pltdata, "name", pltname);
@@ -826,6 +829,11 @@ PLy_trigger_build_args(FunctionCallInfo fcinfo, PLyProcedure *proc, HeapTuple *r
 			PyObject   *pltarg;
 
 			pltargs = PyList_New(tdata->tg_trigger->tgnargs);
+			if (!pltargs)
+			{
+				Py_DECREF(pltdata);
+				return NULL;
+			}
 			for (i = 0; i < tdata->tg_trigger->tgnargs; i++)
 			{
 				pltarg = PyString_FromString(tdata->tg_trigger->tgargs[i]);
diff --git a/src/pl/plpython/plpy_main.c b/src/pl/plpython/plpy_main.c
index 29db90e448..32d23ae5b6 100644
--- a/src/pl/plpython/plpy_main.c
+++ b/src/pl/plpython/plpy_main.c
@@ -167,7 +167,7 @@ PLy_init_interp(void)
 	PLy_interp_globals = PyModule_GetDict(mainmod);
 	PLy_interp_safe_globals = PyDict_New();
 	if (PLy_interp_safe_globals == NULL)
-		PLy_elog(ERROR, "could not create globals");
+		PLy_elog(ERROR, NULL);
 	PyDict_SetItemString(PLy_interp_globals, "GD", PLy_interp_safe_globals);
 	Py_DECREF(mainmod);
 	if (PLy_interp_globals == NULL || PyErr_Occurred())
diff --git a/src/pl/plpython/plpy_plpymodule.c b/src/pl/plpython/plpy_plpymodule.c
index 759ad44932..23f99e20ca 100644
--- a/src/pl/plpython/plpy_plpymodule.c
+++ b/src/pl/plpython/plpy_plpymodule.c
@@ -233,7 +233,7 @@ PLy_create_exception(char *name, PyObject *base, PyObject *dict,
 
 	exc = PyErr_NewException(name, base, dict);
 	if (exc == NULL)
-		PLy_elog(ERROR, "could not create exception \"%s\"", name);
+		PLy_elog(ERROR, NULL);
 
 	/*
 	 * PyModule_AddObject does not add a refcount to the object, for some odd
@@ -268,7 +268,7 @@ PLy_generate_spi_exceptions(PyObject *mod, PyObject *base)
 		PyObject   *dict = PyDict_New();
 
 		if (dict == NULL)
-			PLy_elog(ERROR, "could not generate SPI exceptions");
+			PLy_elog(ERROR, NULL);
 
 		sqlstate = PyString_FromString(unpack_sql_state(exception_map[i].sqlstate));
 		if (sqlstate == NULL)
diff --git a/src/pl/plpython/plpy_procedure.c b/src/pl/plpython/plpy_procedure.c
index 58d6988202..faa4977463 100644
--- a/src/pl/plpython/plpy_procedure.c
+++ b/src/pl/plpython/plpy_procedure.c
@@ -368,6 +368,8 @@ PLy_procedure_compile(PLyProcedure *proc, const char *src)
 	 * all functions
 	 */
 	proc->statics = PyDict_New();
+	if (!proc->statics)
+		PLy_elog(ERROR, NULL);
 	PyDict_SetItemString(proc->globals, "SD", proc->statics);
 
 	/*
diff --git a/src/pl/plpython/plpy_resultobject.c b/src/pl/plpython/plpy_resultobject.c
index 098a366f6f..ca70e25689 100644
--- a/src/pl/plpython/plpy_resultobject.c
+++ b/src/pl/plpython/plpy_resultobject.c
@@ -112,6 +112,11 @@ PLy_result_new(void)
 	ob->nrows = PyInt_FromLong(-1);
 	ob->rows = PyList_New(0);
 	ob->tupdesc = NULL;
+	if (!ob->rows)
+	{
+		Py_DECREF(ob);
+		return NULL;
+	}
 
 	return (PyObject *) ob;
 }
@@ -147,6 +152,8 @@ PLy_result_colnames(PyObject *self, PyObject *unused)
 	}
 
 	list = PyList_New(ob->tupdesc->natts);
+	if (!list)
+		return NULL;
 	for (i = 0; i < ob->tupdesc->natts; i++)
 	{
 		Form_pg_attribute attr = TupleDescAttr(ob->tupdesc, i);
@@ -171,6 +178,8 @@ PLy_result_coltypes(PyObject *self, PyObject *unused)
 	}
 
 	list = PyList_New(ob->tupdesc->natts);
+	if (!list)
+		return NULL;
 	for (i = 0; i < ob->tupdesc->natts; i++)
 	{
 		Form_pg_attribute attr = TupleDescAttr(ob->tupdesc, i);
@@ -195,6 +204,8 @@ PLy_result_coltypmods(PyObject *self, PyObject *unused)
 	}
 
 	list = PyList_New(ob->tupdesc->natts);
+	if (!list)
+		return NULL;
 	for (i = 0; i < ob->tupdesc->natts; i++)
 	{
 		Form_pg_attribute attr = TupleDescAttr(ob->tupdesc, i);
diff --git a/src/pl/plpython/plpy_spi.c b/src/pl/plpython/plpy_spi.c
index 69eb6b39f6..ade27f3924 100644
--- a/src/pl/plpython/plpy_spi.c
+++ b/src/pl/plpython/plpy_spi.c
@@ -360,6 +360,8 @@ PLy_spi_execute_fetch_result(SPITupleTable *tuptable, uint64 rows, int status)
 	volatile MemoryContext oldcontext;
 
 	result = (PLyResultObject *) PLy_result_new();
+	if (!result)
+		return NULL;
 	Py_DECREF(result->status);
 	result->status = PyInt_FromLong(status);
 
@@ -409,17 +411,24 @@ PLy_spi_execute_fetch_result(SPITupleTable *tuptable, uint64 rows, int status)
 
 				Py_DECREF(result->rows);
 				result->rows = PyList_New(rows);
-
-				PLy_input_setup_tuple(&ininfo, tuptable->tupdesc,
-									  exec_ctx->curr_proc);
-
-				for (i = 0; i < rows; i++)
+				if (!result->rows)
 				{
-					PyObject   *row = PLy_input_from_tuple(&ininfo,
-														   tuptable->vals[i],
-														   tuptable->tupdesc);
+					Py_DECREF(result);
+					result = NULL;
+				}
+				else
+				{
+					PLy_input_setup_tuple(&ininfo, tuptable->tupdesc,
+										  exec_ctx->curr_proc);
 
-					PyList_SetItem(result->rows, i, row);
+					for (i = 0; i < rows; i++)
+					{
+						PyObject   *row = PLy_input_from_tuple(&ininfo,
+															   tuptable->vals[i],
+															   tuptable->tupdesc);
+
+						PyList_SetItem(result->rows, i, row);
+					}
 				}
 			}
 
diff --git a/src/pl/plpython/plpy_typeio.c b/src/pl/plpython/plpy_typeio.c
index ce1527072e..c48e8fd5f3 100644
--- a/src/pl/plpython/plpy_typeio.c
+++ b/src/pl/plpython/plpy_typeio.c
@@ -718,6 +718,8 @@ PLyList_FromArray_recurse(PLyDatumToOb *elm, int *dims, int ndim, int dim,
 	PyObject   *list;
 
 	list = PyList_New(dims[dim]);
+	if (!list)
+		return NULL;
 
 	if (dim < ndim - 1)
 	{
@@ -826,7 +828,7 @@ PLyDict_FromTuple(PLyDatumToOb *arg, HeapTuple tuple, TupleDesc desc)
 
 	dict = PyDict_New();
 	if (dict == NULL)
-		PLy_elog(ERROR, "could not create new dictionary");
+		return NULL;
 
 	PG_TRY();
 	{