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Cannot perform DDL command now as a DDL command is already in progress.
Concurrency rules for
index creation
commands
If a
or
CREATE DBSPACE
explicitly issues a
CHECKPOINT
message:
Run time SQL Error
If a
command is in progress, a user who issues a
CHECKPOINT
or
DBSPACE
DROP DBSPACE
Cannot perform requested command as there is a
CHECKPOINT command in progress.
A user who issues
CREATE DBSPACE
Cannot perform requested command as there is a
DROP DBSPACE command in progress.
A user who issues
DROP DBSPACE
Cannot perform requested command as there is a
CREATE DBSPACE command in progress.
See "Versioning of temporary tables" for special rules regarding temporary
tables.
When one transaction issues a DDL command on a given table or index, any
other transaction that began before the DDL transaction commits, and that tries
to access that table, receives an error.
When this error occurs, any additional attempts to read or write to the table in
the current transaction will fail.
If a transaction modifies the definition of a table that is part of a join index, it
locks every table with any columns that are joined in that index. This result
occurs whether or not the particular columns in the original write transaction
are being joined.
There is an exception to these rules for index creation commands.
and
INDEX
CREATE JOIN INDEX
table(s) affected by the index creation. Adaptive Server IQ prevents use of the
new index or join index until the transaction creating the index commits.
CHAPTER 8
Transactions and Versioning
command is in progress, and a user
DROP DBSPACE
command, the checkpoint fails with the
command gets the following message:
during a drop gets the message
during a create gets the message:
can occur concurrently with a
CREATE
CREATE
on the
SELECT
301
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