PG_SHARED_MEMORY_DETAIL
PG_SHARED_MEMORY_DETAIL displays usage information about all the shared memory contexts.
| 
        Column  | 
      
        Type  | 
      
        Description  | 
     
|---|---|---|
| 
        contextname  | 
      
        Text  | 
      
        Name of the memory context.  | 
     
| 
        level  | 
      
        Smallint  | 
      
        Hierarchy of the memory context.  | 
     
| 
        parent  | 
      
        Text  | 
      
        Parent memory context.  | 
     
| 
        totalsize  | 
      
        Bigint  | 
      
        Total size of the shared memory, in bytes.  | 
     
| 
        freesize  | 
      
        Bigint  | 
      
        Remaining size of the shared memory, in bytes.  | 
     
| 
        usedsize  | 
      
        Bigint  | 
      
        Used size of the shared memory, in bytes.  | 
     
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