General Thread States - Oracle 5.0 Reference Manual

The thread is waiting for the client to send a new statement to it.
•
Statistics
The thread is producing server-status information.
•
Table Dump
The thread is sending table contents to a slave server.
•
Time
Unused.

8.10.2. General Thread States

The following list describes thread
and not more specialized activities such as replication. Many of these are useful only for finding bugs in
the server.
•
After create
This occurs when the thread creates a table (including internal temporary tables), at the end of the
function that creates the table. This state is used even if the table could not be created due to some
error.
•
Analyzing
The thread is calculating a
•
checking permissions
The thread is checking whether the server has the required privileges to execute the statement.
•
Checking table
The thread is performing a table check operation.
•
cleaning up
The thread has processed one command and is preparing to free memory and reset certain state
variables.
•
closing tables
The thread is flushing the changed table data to disk and closing the used tables. This should be a
fast operation. If not, you should verify that you do not have a full disk and that the disk is not in very
heavy use.
•
converting HEAP to MyISAM
The thread is converting an internal temporary table from a
table.
•
copy to tmp table
The thread is processing an
structure has been created but before rows are copied into it.
•
Copying to group table
If a statement has different
copied to a temporary table.
General Thread States
values that are associated with general query processing
State
table key distributions (for example, for
MyISAM
statement. This state occurs after the table with the new
ALTER TABLE
and
ORDER BY GROUP BY
734
ANALYZE
table to an on-disk
MEMORY
criteria, the rows are sorted by group and
TABLE).
MyISAM