Be less detailed about reporting shared memory failure by avoiding the

output of actual Postgres parameter _values_ related to shared memory,
and suggesting that these are only possible parameters to reduce.

Author: bmomjian

src/backend/port/sysv_shmem.c

@@ -153,37 +153,36 @@ InternalIpcMemoryCreate(IpcMemoryKey memKey, Size size)
 		  "segment exceeded your kernel's SHMMAX parameter.  You can either "
 						 "reduce the request size or reconfigure the kernel with larger SHMMAX.  "
 				  "To reduce the request size (currently %lu bytes), reduce "
-			   "PostgreSQL's shared_buffers parameter (currently %d) and/or "
-						 "its max_connections parameter (currently %d).\n"
+					   "PostgreSQL's shared memory usage, perhaps by reducing shared_buffers"
+						 "or max_connections.\n"
 						 "If the request size is already small, it's possible that it is less than "
 						 "your kernel's SHMMIN parameter, in which case raising the request size or "
 						 "reconfiguring SHMMIN is called for.\n"
 		"The PostgreSQL documentation contains more information about shared "
 						 "memory configuration.",
-						 (unsigned long) size, NBuffers, MaxBackends) : 0,
+						 (unsigned long) size) : 0,
 				 (errno == ENOMEM) ?
 				 errhint("This error usually means that PostgreSQL's request for a shared "
 				   "memory segment exceeded available memory or swap space, "
 						 "or exceeded your kernel's SHMALL parameter.  You can either "
 						 "reduce the request size or reconfigure the kernel with larger SHMALL.  "
 				  "To reduce the request size (currently %lu bytes), reduce "
-			   "PostgreSQL's shared_buffers parameter (currently %d) and/or "
-						 "its max_connections parameter (currently %d).\n"
+					   "PostgreSQL's shared memory usage, perhaps by reducing shared_buffers"
+						 "or max_connections.\n"
 		"The PostgreSQL documentation contains more information about shared "
 						 "memory configuration.",
-						 (unsigned long) size, NBuffers, MaxBackends) : 0,
+						 (unsigned long) size) : 0,
 				 (errno == ENOSPC) ?
 				 errhint("This error does *not* mean that you have run out of disk space. "
 						 "It occurs either if all available shared memory IDs have been taken, "
 						 "in which case you need to raise the SHMMNI parameter in your kernel, "
 		  "or because the system's overall limit for shared memory has been "
 				 "reached.  If you cannot increase the shared memory limit, "
 		  "reduce PostgreSQL's shared memory request (currently %lu bytes), "
-			"by reducing its shared_buffers parameter (currently %d) and/or "
-						 "its max_connections parameter (currently %d).\n"
+				   "perhaps by reducing shared_buffers or max_connections.\n"
 		"The PostgreSQL documentation contains more information about shared "
 						 "memory configuration.",
-						 (unsigned long) size, NBuffers, MaxBackends) : 0));
+						 (unsigned long) size) : 0));
 	}
 
 	/* Register on-exit routine to delete the new segment */