tcl.fid Verb: Access/TCL


Command tcl.fid Verb: Access/TCL
Applicable release versions: AP
Category TCL (746)
Description displays information about a memory-resident frame.
Syntax fid frame-id {(options)}
Options n Outputs report without pausing at the bottom of each page.

p Directs output to system printer, via the Spooler.
fid 122

      i i t n b r
w m   o o o o a e
t l f w b p t t u
r o r r u h i c s
e c e i s s a h e
q k f t y h q b d  
0 1 1 0 0 1 0 0 0

A fwdhq  fwdaq  bckaq  buffid btwa
- ------ ------ ------ ------ -------
0 000000 000000 000000 00007A 400CB800

In the "vertical columns" above each of the bit settings for the 
given are descriptions of each bit. Any column with a "0" underneath 
indicates that the corresponding value is "off". Non zero indicates 
that the value is "on".

"wtreq" indicates a "write-required" state.

"mlock" indicates a "memory-locked" (core-locked) state.

"fref" indicates that this frame has been referenced recently.

"iowrit" indicates that the frame is being written, or is enqueued 
for writing.

"iobusy" indicates that this frame is being read from disk.

"tophsh" indicates that this buffer is at the top of the internal 
memory hash list.

"notiaq" indicates that this buffer will soon be gone.

"batchb" indicates that this fid was brought into memory by a batch 

"reused" indicates that the buffer is eligible for immediate re-use.

"Attr" is the number of virtual registers attached to this buffer.

"fwdhq", "bckaq" and "fwdaq"
   are all pointers to an internal management list.

"buffid" is the fid of the buffer.

"btwa" indicates the real address of the buffer.
Related tcl.lock-frame