List of X$ Tables and how the names are derived

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Doc ID:  Note:22241.1
Subject:  List of X$ Tables and how the names are derived
Type:  REFERENCE
Status:  PUBLISHED
 Content Type:  TEXT/PLAIN
Creation Date:  14-MAR-1995
Last Revision Date:  23-SEP-1999
Language:  USAENG
 

** INTERNAL ONLY **

This is a summary list of X$ Table Definitions - Last revision was 7.3.2
The main purpose of this note is to show the naming conventions.
                                 
  [K]ernel Layer                                                               
    [2]-Phase Commit                                                           
      [G]lobal [T]ransaction [E]ntry                                           
        X$K2GTE  - Current 2PC tx                                              
        X$K2GTE2 - Current 2PC tx                                              
    [C]ache Layer                                                              
      [B]uffer Management                                                      
        Buffer [H]ash                                                          
          X$BH - Hash Table                                                    
        Buffer LRU Statistics                                                  
          X$KCBCBH - [C]urrent [B]uffers (buckets) - lru_statistics            
          X$KCBRBH - [R]ecent [B]uffers (buckets) - lru_extended               
        Buffer [WAIT]s                                                         
          X$KCBWAIT  - Waits by block class                                    
          X$KCBFWAIT - Waits by File                                           
        [W]orking Sets - 7.3 or higher                                         
          X$KCBWDS - Set [D]escriptors                                         
      [C]ontrol File Management                                                
        [C]ontrol [F]ile List - 7.0.16 or higher                               
          X$KCCCF - Control File Names & status                                
        [D]atabase [I]nformation                                               
          X$KCCDI - Database Information                                       
        Data [F]iles                                                           
          X$KCCFE - File [E]ntries ( from control file )                       
          X$KCCFN - [F]ile [N]ames                                             
        [L]og Files                                                            
          X$KCCLE - Log File [E]ntries                                         
          X$KCCLH - Log [H]istory ( archive entries )                          
        Thread Information                                                     
          X$KCCRT - [R]edo [T]hread Information                                
      [F]ile Management                                                        
        X$KCFIO - File [IO] Statistics                                         
      [L]ock Manager Component ( LCK )                                         
        [H]ash and Bucket Tables - 7.0.15 to 7.1.1, and 7.2.0 or higher        
          X$KCLFH - File [H]ash Table                                          
          X$KCLFI - File Bucket Table                                          
          X$LE - Lock [E]lements                                                 
          X$LE_STAT - Lock Conversion [STAT]istics                               
          X$KCLFX - Lock Element [F]ree list statistics - 7.3 or higher          
          X$KCLLS - Per LCK free list statistics - 7.3 or higher                 
          X$KCLQN - [N]ame (hash) table statistics - 7.3 or higher               
      [R]edo Component                                                         
        [M]edia recovery  - kcra.h - 7.3 or higher                             
          X$KCRMF - [F]ile context                                             
          X$KCRMT - [T]hread context                                           
          X$KCRMX - Recovery Conte[X]t                                         
        [F]ile read                                                            
          X$KCRFX - File Read Conte[X]t -  7.3 or higher                       
      Reco[V]ery Component                                                     
        [F]ile [H]eaders                                                       
          X$KCVFH - All file headers                                           
          X$KCVFHMRR - Files with [M]edia [R]ecovery [R]equired                
          X$KCVFHONL - [ONL]ine File headers                                   
      [K]ompatibility Management - 7.1.1 or higher                             
        X$KCKCE - [C]ompatibility Segment [E]ntries                            
        X$KCKTY - Compatibility [TY]pes                                        
        X$KCKFM - Compatibility [F]or[M]ats ( index into X$KCKCE )             
    [D]ata Layer                                                               
      Sequence [N]umber Component                                              
         X$KDNCE - Sequence [C]ache [E]ntries - 7.2 or lower                    
        [S]equence Enqueues - common area for enqueue objects                  
          X$KDNSSC - [C]ache Enqueue Objects - 7.2 or lower                    
          X$KDNSSF - [F]lush Enqueue Objects - 7.2 or lower                    
          X$KDNST - Cache [ST]atistics - 7.2 or lower                            
      Inde[X] Block Component                                                  
        X$KDXHS - Index [H]i[S]togram                                          
        X$KDXST - Index [ST]atistics                                           
    [G]eneric Layer                                                            
      [H]eap Manager                                                           
        X$KGHLU - State (summary) of [L]R[U] heap(s) - defined in ksmh.h       
      [I]nstantiation Manager                                                  
        [C]ursor [C]ache                                                       
          X$KGICC - Session statistics - defined in kqlf.h                     
          X$KGICS - System wide statistics - defined in kqlf.h                 
      [L]ibrary Cache Manager  ( defined and mapped from kqlf )                
        Bind Variables                                                         
          X$KKSBV - Library Object [B]ind [V]ariables                          
        Object Cache                                                           
          X$KGLOB - All [OB]jects                                              
          X$KGLTABLE   - Filter for [TABLE]s                                   
          X$KGLBODY    - Filter for [BODY] ( packages )                        
          X$KGLTRIGGER - Filter for [TRIGGER]s                                 
          X$KGLINDEX   - Filter for [INDEX]es                                  
          X$KGLCLUSTER - Filter for [CLUSTER]s                                 
          X$KGLCURSOR  - Filter for [CURSOR]s                                  
        Cache Dependency                                                       
          X$KGLDP - Object [D]e[P]endency table                                
          X$KGLRD - [R]ead only [D]ependency table - 7.3 or higher             
        Object Locks                                                           
          X$KGLLK - Object [L]oc[K]s                                           
        Object Names                                                           
          X$KGLNA - Object [NA]mes (sql text)                                  
          X$KGLNA1 - Object [NA]mes (sql text) with newlines - 7.2.0 or higher 
        Object Pins                                                            
          X$KGLPN - Object [P]i[N]s                                            
        Cache Statistics                                                       
          X$KGLST - Library cache [ST]atistics                                 
        Translation Table                                                      
          X$KGLTR - Address [TR]anslation                                      
        Access Table                                                           
          X$KGLXS - Object Access Table                                        
        Authorization Table - 7.1.5 or higher                                  
          X$KGLAU - Object Authorization table                                 
        Latch Cleanup - 7.0.15 or higher                                       
          X$KGLLC - [L]atch [C]leanup for Cache/Pin Latches                    
    [K]ompile Layer                                                            
      [S]hared Objects                                                         
        X$KKSAI - Cursor [A]llocation [I]nformation - 7.3.2 or higher          
    [L]oader                                                                   
      [L]ibrary                                                                
        X$KLLCNT - [C]o[NT]rol Statistics                                      
        X$KLLTAB - [TAB]le Statistics                                          
    [M]ulti-Threaded Layer                                                     
      [C]ircuit component                                                      
        X$KMCQS - Current [Q]ueue [S]tate                                      
        X$KMCVC - [V]irtual [C]ircuit state                                    
      [M]onitor Server/dispatcher                                              
        [D]ispatcher                                                            
          X$KMMDI - [D]ispatcher [I]nfo (status)                                
          X$KMMDP - [D]ispatcher Config ( [P]rotocol info )                    
        [S]erver                                                                
          X$KMMSI - [S]erver [I]nfo ( status )                                  
          X$KMMSG - [SG]a info ( global statistics)                               
          X$KMMRD - [R]equest timing [D]istributions                             
    s[Q]l Version and Option Layer                                             
      Kernel [V]ersions                                                        
        X$VERSION - Library versions                                           
      Kernel [O]ptions - 7.1.3 or higher                                       
        X$OPTION - Server Options                                              
    [Q]uery Layer                                                              
      [D]ictionary Cache Management                                            
        X$KQDPG - [PG]a row cache cursor statistics                            
      [F]ixed Tables/views Management                                          
        X$KQFCO - Table [CO]lumn definitions                                   
        X$KQFDT - [D]erived [T]ables                                           
        X$KQFSZ - Kernel Data structure type [S]i[Z]es                         
        X$KQFTA - Fixed [TA]bles                                               
        X$KQFVI - Fixed [VI]ews                                                
        X$KQFVT - [V]iew [T]ext definition - 7.2.0 or higher                   
      [R]ow Cache Management                                                   
        X$KQRST - Cache [ST]atistics                                           
        X$KQRPD - [P]arent Cache [D]efinition - 7.1.5 or higher                
        X$KQRSD - [S]ubordinate Cache [D]efinition - 7.1.5 or higher           
    [S]ervice Layer                                                            
      [B]ackground Management                                                  
        [D]etached Process                                                     
          X$KSBDD - Detached Process [D]efinition (info)                       
          X$KSBDP - Detached [P]rocess Descriptor (name)                       
          X$MESSAGES - Background Message table                                
      [I]nstance [M]anagement - 7.3 or higher                                  
        X$KSIMAT - Instance [AT]tributes                                       
        X$KSIMAV - [A]ttribute [V]alues for all instances                      
        X$KSIMSI - [S]erial and [I]nstance numbers                             
      [L]ock Management                                                        
        [E]vent Waits                                                          
          X$KSLED - Event [D]escriptors                                        
          X$KSLEI - [I]nstance wide statistics since startup                   
          X$KSLES - Current [S]ession statistics                               
        [L]atches                                                              
          X$KSLLD - Latch [D]escriptor (name)                                  
          X$KSLLT - Latch statistics [ + Child latches @ 7.3 or higher ]       
          X$KSLLW - Latch context ( [W]here ) descriptors - 7.3 or higher      
          X$KSLPO - Latch [PO]st statistics - 7.3 or higher                    
          X$KSLWSC- No[W]ait and [S]leep [C]ount stats by Context -7.3 or higher
      [M]emory Management                                                      
        [C]ontext areas                                                        
          X$KSMCX - E[X]tended statistics on usage - 7.3.1 or lower            
        Heap Areas                                                             
          X$KSMSP - SGA Hea[P]                                                 
          X$KSMPP - [P]GA Hea[P] - 7.3.2 and above                             
          X$KSMUP - [U]GA Hea[P] - 7.3.2 and above                             
          X$KSMHP - Any [H]ea[P] - 7.3.2 and above                             
          X$KSMSPR- [S]hared [P]ool [R]eserved List - 7.1.5 or higher          
        [L]east recently used shared pool chunks                               
          X$KSMLRU - LR[U] flushes from the shared pool                        
        [S]GA Objects                                                          
          X$KSMSD - Size [D]efinition for Fixed/Variable summary               
          X$KSMSS - Statistics (lengths) of SGA objects                        
        SGA [MEM]ory                                                            
          X$KSMMEM - map of the entire SGA - 7.2.0 or higher                   
          X$KSMFSV - Addresses of [F]ixed [S]GA [V]ariables - 7.2.1 or higher  
      [P]arameter Component                                                    
          X$KSPPI  - [P]arameter [I]nfo ( Names )                              
          X$KSPPCV - [C]urrent Session [V]alues - 7.3.2 or above               
          X$KSPPSV - [S]ystem [V]alues - 7.3.2 or above                        
      En[Q]ueue Management                                                     
        X$KSQDN - Global [D]atabase [N]ame                                     
        X$KSQEQ - [E]n[Q]ueue Object                                           
        X$KSQRS - Enqueue [R]e[S]ource                                         
        X$KSQST - Enqueue [S]tatistics by [T]ype                               
      [U]ser Management                                                        
        [C]ost                                                                 
          X$KSUCF - Cost [F]unction (resource limit)                           
        [L]icence                                                               
          X$KSULL - Licence [L]imits                                          
        [L]anguage Manager                                                     
          X$NLS_PARAMETERS - NLS parameters                                    
          X$KSULV - NLS [V]alid Values - 7.1.2 or higher                       
        [MY] [ST]atistics                                                      
          X$KSUMYSTA - [MY] [ST]atisics (current session)                      
        [P]rocess Info                                                     &nb