*** a/src/include/storage/shmem.h
--- b/src/include/storage/shmem.h
***************
*** 50,56 **** extern void RequestAddinShmemSpace(Size size);
   /* max size of data structure string name */
  #define SHMEM_INDEX_KEYSIZE		 (48)
   /* estimated size of the shmem index table (not a hard limit) */
! #define SHMEM_INDEX_SIZE		 (32)
  
  /* this is a hash bucket in the shmem index table */
  typedef struct
--- 50,56 ----
   /* max size of data structure string name */
  #define SHMEM_INDEX_KEYSIZE		 (48)
   /* estimated size of the shmem index table (not a hard limit) */
! #define SHMEM_INDEX_SIZE		 (64)
  
  /* this is a hash bucket in the shmem index table */
  typedef struct