Hi all,
Just wanna share some experices with you. We have experienced deadlock
problems after we migrated our DB2 v7.x to v8.x. And we are using WAS
5.x and WCBE 5.5 at the same time.
It tooks us days to find the root cause. By reading this post,
hopefully it won't cost you that much.
The root cause of the problem is "restore db" only restores type 1
indexes to type 1. In V8.x, DB2_RR_TO_RS=YE S is deprecated for Type 2
Index. I didn't find the officical document from DB2 info center.
However, I tried this trick on AIX 5.1, DB2 V8.1.1.16 and seems no
longer supported there.
To fix the problem, we need to run reorg for every table to convert
type 1 index to type 2 after we restore the v7 database.
such as
REORG INDEXES ALL FOR TABLE <FOO> CONVERT;
and it does solve the deadlock problem.
cheers,
Victor
2  2783 
This is not a restore specific issue.
During any database migration, either on disk or through restore, we will
not change the type 1 indexes to type 2.
All new indexex create in V8 will default to type 2, UNLESS there is already
a type 1 index defined on the table in which case the new index will also be
of type 1. The method you described is the recommended way to convert your
indexes to type 2.
Dale McInnis
"Victor Yongwei Yang" <py*********@ya hoo.com> wrote in message
news:fe******** *************** ***@posting.goo gle.com... Hi all,
Just wanna share some experices with you. We have experienced deadlock
problems after we migrated our DB2 v7.x to v8.x. And we are using WAS
5.x and WCBE 5.5 at the same time.
It tooks us days to find the root cause. By reading this post,
hopefully it won't cost you that much.
The root cause of the problem is "restore db" only restores type 1
indexes to type 1. In V8.x, DB2_RR_TO_RS=YE S is deprecated for Type 2
Index. I didn't find the officical document from DB2 info center.
However, I tried this trick on AIX 5.1, DB2 V8.1.1.16 and seems no
longer supported there.
To fix the problem, we need to run reorg for every table to convert
type 1 index to type 2 after we restore the v7 database.
such as
REORG INDEXES ALL FOR TABLE <FOO> CONVERT;
and it does solve the deadlock problem.
cheers,
Victor
"Victor Yongwei Yang" <py*********@ya hoo.com> wrote in message
news:fe******** *************** ***@posting.goo gle.com... Hi all,
Just wanna share some experices with you. We have experienced deadlock
problems after we migrated our DB2 v7.x to v8.x. And we are using WAS
5.x and WCBE 5.5 at the same time.
It tooks us days to find the root cause. By reading this post,
hopefully it won't cost you that much.
The root cause of the problem is "restore db" only restores type 1
indexes to type 1. In V8.x, DB2_RR_TO_RS=YE S is deprecated for Type 2
Index. I didn't find the officical document from DB2 info center.
However, I tried this trick on AIX 5.1, DB2 V8.1.1.16 and seems no
longer supported there.
In V8.x, db2_rr_to_rs=ye s still can work with type-1 index. It is strange
you did not get deadlock problem before migration.
To fix the problem, we need to run reorg for every table to convert
type 1 index to type 2 after we restore the v7 database.
such as
REORG INDEXES ALL FOR TABLE <FOO> CONVERT;
and it does solve the deadlock problem.
cheers,
Victor This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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