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Saturday 7 January 2012

Simple TSQL script to see status of active processes

create procedure sp__who2 as
select spid , fid ,
substring(suser_name(suid),1,10) Login_name,
substring(program_name,1,10) Program ,
status , cmd ,
substring(db_name(dbid),1,19) db_name,
object_name(id, dbid) objectname,
substring(tran_name,1,22) tran_name,
blocked, time_blocked, physical_io
from master..sysprocesses
go

More info about the system table sysprocesses:
sysprocesses contains information about Adaptive Server processes, but it is not a normal table. It is built dynamically when queried by a user. No updates to sysprocesses are allowed. Use the kill statement to kill a process.
Columns
The columns for sysprocesses are:
Name
Datatype
Description
spid
smallint
Process ID.
kpid
int
Kernel process ID.
enginenum
int
Number of engine on which process is being executed.
status
char(12)
Process ID status (see below table).
suid
int
Server user ID of user who issued command.
hostname
varchar(30) null
Name of host computer.
program_name
varchar(30) null
Name of front-end module.
hostprocess
varchar(30) null
Host process ID number..
cmd
varchar(30) null
Command or process currently being executed. Evaluation of a conditional statement, such as an if or while loop, returns cond.
cpu
int
Cumulative CPU time for process in ticks
physical_io
int
Number of disk reads and writes for current command.
memusage
int
Amount of memory allocated to process.
blocked
smallint
Process ID of blocking process, if any.
dbid
smallint
Database ID.
uid
int
ID of user who executed command.
gid
int
Group ID of user who executed command.
tran_name
varchar(64) null
Name of the active transaction.
time_blocked
int null
Time blocked in seconds.
network_pktsz
int null
Current connection’s network packet size.
fid
smallint null
Process ID of the worker process’ parent.
execlass
varchar(30) null
Execution class that the process is bound to.
priority
varchar(10) null
Base priority associated with the process.
affinity
varchar(30) null
Name of the engine to which the process has affinity.
id
int null
Object ID of the currently running procedure (or 0 if no procedure is running).
stmtnum
int null
The current statement number within the running procedure (or the SQL batch statement number if no procedure is running).
linenum
int null
The line number of the current statement within the running stored procedure (or the line number of the current SQL batch statement if no procedure is running).
origsuid
int null
Original server user ID. If this value is not NULL, a user with an suid of origsuid executed set proxy or set session authorization to impersonate the user who executed the command.
block_xloid
int null
Unique lock owner ID of a lock that is blocking a transaction.
clientname
varchar(30) null
Optional – name by which the user is know for the current session.
Adaptive Server automatically stores one or more spaces in clientname, clienthostname, and clientapplname columns. For this reason, a query using any of these three columns that includes “is null” does not return an expected result set.
clienthostname
varchar(30) null
Optional – name by which the host is known for the current session.
clientapplname
varchar(30) null
Optional – name by which the application is known for the current session.
sys_id
smallint null
Unique identity of companion node.
ses_id
int null
Unique identity of each client session.
loggedindatetime
datetime null
Shows the time and date when the client connected to Adaptive Server. See “Row-level access control“ in Chapter 11, “Managing User Permissions” of the System Administration Guide for more information.
ipaddr
varchar(64) null
IP address of the client where the login is made. See “Row-level access control“ in Chapter 11, “Managing User Permissions” of the System Administration Guide for more information.
nodeid
tinyint null
Reserved for future use.

Values for the status column:
Table 1-19: sysprocesses status column values
Status
Meaning
alarm sleep
Waiting for alarm to wake process up (user executed a waitfor delay command)
background
A process, such as a threshold procedure, run by Adaptive Server rather than by a user process
infected
Server has detected a serious error condition; extremely rare
latch sleep
Waiting on a latch acquisition
lock sleep
Waiting on a lock acquisition
PLC sleep
Waiting to access a user log cache
recv sleep
Waiting on a network read
remote i/o
Performing I/O with a remote server
runnable
In the queue of runnable processes
running
Actively running on one of the server engines
send sleep
Waiting on a network send
sleeping
Waiting on a disk I/O, or some other resource (often indicates a process that is running, but doing extensive disk I/O)
stopped
Stopped process
sync sleep
Waiting on a synchronization message from another process in the family


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