We have an "Insert into XYZ_Table(seq_nbr, abc,def) select 3, abc,def
from XYZ_TABLE where abc > ### " query in our application. This query
is an COBOL Stored Procedure residing on DB2 Mainframes. When multiple
users access the application and call this Stored Procedure
simultaneously, then we are seeing LOCK/WAIT state of some of the
threads. The table XYZ_Table is having Locksize of row.Each of the
threads will have a different value for ## and hence no two threads
will be trying to selecting same record. But still some threads either
time-out or go into IOWAIT state.
Can someone please help me on this. Is it an issue with the query or
with memory/CPU allocation for DB?
TiA,
Naveen
3  3178 
<na*************@gmail.com> wrote in message
news:11**********************@j33g2000cwa.googlegr oups.com... We have an "Insert into XYZ_Table(seq_nbr, abc,def) select 3, abc,def
from XYZ_TABLE where abc > ### " query in our application. This query
is an COBOL Stored Procedure residing on DB2 Mainframes. When multiple
users access the application and call this Stored Procedure
simultaneously, then we are seeing LOCK/WAIT state of some of the
threads. The table XYZ_Table is having Locksize of row.Each of the
threads will have a different value for ## and hence no two threads
will be trying to selecting same record. But still some threads either
time-out or go into IOWAIT state.
Can someone please help me on this. Is it an issue with the query or
with memory/CPU allocation for DB?
TiA,
Naveen
Try this:
Insert into XYZ_Table(seq_nbr, abc,def) select 3, abc,def
from XYZ_TABLE where abc > ### with ur
Unfortunately, "WITH UR" doesnt work when the select stmt is part of
INSERT/UPDATE/DELETE :(
Thanks,
Naveen
My system has a very high number of concurrent transactions. When I
face a lock-wait scenarios, I usually see bad access plans. Reorg your
table and update your statistics. Then rebind your packages
HTH
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