tempdb log space full

hi

recently we receive this message in ase log

18:53:00.03 server  Space available in the log segment has fallen 
critically low in database 'tempdb'.  All future modifications to this 
database will be aborted until the log is successfully dumped
 and space becomes available.
18:53:02.62 server  Error: 4205, Severity: 16, State: 1
18:53:02.63 server  Syslogs does not exist in its own segment in database 
'tempdb' with segmap '7' with logical start page number of '0'. You cannot 
use DUMP TRANSACTION in this case, use DUMP DATAB
ASE instead.
18:53:02.79 server  WARNING: ***************************
18:53:02.79 server  Attempt by user 1 to dump xact on db tempdb with NO_LOG
18:53:03.02 server  Attempt by user 1 to dump xact on db tempdb with NO_LOG 
was successful


I went to troubleshoot tempdb and using sp_helpdb i have this setting in 
tempdb

device_fragments               size          usage                created   
       free kbytes 
----------------               ----          -----                -------   
       ----------- 
tempdb                         500.0 MB      data and log         NULL      
     508234 


It says i have 500Mb free as i went to troubleshoot.
How do i troubleshoot how much space left in tempdb log?? 




0
manga
5/21/2003 5:19:09 AM
sybase.ase.administration 7058 articles. 2 followers. Follow

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As the data (default and system) and log segments are in the same database 
fragment, you cannot determine how much space is available just for the log 
segment because the same space is also used for data.

Below, I have posted a stored procedure that will analyse the space used 
and data space left in a database.

If the data and log are on their own fragments, you get something like this

HDU3 System 38500 KB d ( 37.6 % ). 34106 KB l (66.61%). 63900 KB left.

If they are combined on one or more fragments, you get something like this

HDU3 tempdb 1196 KB d ( 2.2 % ). 16 KB l (%). 53076 KB left

In both cases, the amount left relates to how much data space is available. 
For a database with one or more combined fragments (shown by having (%) for 
the log space percentage), this is also how much log space is available.

             Raymond

if exists (select 1 from master..sysdatabases where name='sybsystemprocs')
begin
  use sybsystemprocs
end
else
begin
  use master
end
go

/*
  If the procedure exists, then drop it.
*/

if exists (select 1
             from sysobjects
            where name = 'sp_rpm_spaceleft'
              and type = 'P')
begin
  drop procedure sp_rpm_spaceleft
  print "Drop procedure sp_rpm_spaceleft"
end
go

create proc sp_rpm_spaceleft 

as
begin
/*
  Determine the server's page size
*/
declare @page_size numeric (20, 4)

select  @page_size = low
  from master.dbo.spt_values
 where type = 'E'
   and number = 1
/*
  Determine how much of the database data area has been used.
*/
declare @used numeric (16, 0),
        @logs numeric (16, 0),
        @dbpg numeric (16, 0),
        @lopg numeric (16, 0),
        @upct float,
        @lpct float,
        @left numeric (16, 0),
        @dbname varchar (30),
        @svname varchar (30),
        @clpct varchar (10)

select @used = sum (reserved_pgs (id, doampg) + reserved_pgs (id, ioampg))
  from sysindexes
 where id != 8

select @logs = sum (reserved_pgs (id, doampg))
  from sysindexes
 where id = 8

if exists (select 1 from master..sysusages
            where dbid=db_id ()
              and segmap = 4)
   and not exists (select 1 from master..sysusages
                    where dbid=db_id ()
                      and segmap = 7)
begin
  select @dbpg = sum(size)
    from master.dbo.sysusages
   where dbid = db_id()
     and segmap != 4

  select @lopg = sum(size)
    from master.dbo.sysusages
   where dbid = db_id()
     and segmap = 4

  select @lpct = round ((@logs * 100) / @lopg, 2)

  select @used = @used * (@page_size / 1024), 
         @logs = @logs * (@page_size / 1024), 
         @left = (@dbpg - @used) * (@page_size / 1024),
         @upct = round ((@used * 100) / @dbpg, 2),
         @dbname = db_name ()
end
else
begin
  select @dbpg = sum(size)
    from master.dbo.sysusages
   where dbid = db_id()
     and segmap != 4

  select @lopg = 0

  select @lopg = sum(size)
    from master.dbo.sysusages
   where dbid = db_id()
     and segmap = 4

  if exists (select 1 from master.dbo.sysusages
              where dbid=db_id ()
                and segmap = 4)
     and exists (select 1 from master.dbo.sysusages
                  where dbid=db_id ()
                    and segmap = 7)
  begin
    select @lpct = -1
  end

  select @used = @used * (@page_size / 1024), 
         @logs = @logs * (@page_size / 1024), 
         @left = (@dbpg - @used - CASE WHEN (@logs - @lopg) > 0 THEN (@logs 
- @lopg) ELSE CASE WHEN @lopg = 0 THEN @logs ELSE 0 END END) * (@page_size 
/ 1024),
         @upct = round (((@used + CASE WHEN (@logs - @lopg) > 0 THEN (@logs 
- @lopg) ELSE 0 END) * 100) / @dbpg, 2),
         @dbname = db_name ()
end

select @svname = isnull (@@servername, 'NoName'),
       @clpct = ltrim (CASE WHEN @lpct < 0 THEN '.' WHEN @lpct is null THEN 
null ELSE str (@lpct, 10, 2) END)

print ""
print "%1! %2! %3! KB d ( %4! %% ). %5! KB l (%6!%%). %7! KB left.", 
@svname, @dbname, @used, @upct, @logs, @clpct, @left
print ""

end

go

grant exec on sp_rpm_spaceleft to public
go
0
Raymond_Mardle
5/21/2003 6:37:17 AM
thanks very much
0
manga
5/21/2003 8:06:57 AM
Reply:

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