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How long does TRUNCATE take?
1 Answer. If there are zero transactions locking the table schema, the TRUNCATE TABLE command will finish near-instantaneously. The most i have waited so far was 0.1 seconds for truncating a 25GB table.
Why TRUNCATE is faster than delete in Oracle?
TRUNCATE is faster than DELETE , as it doesn’t scan every record before removing it. TRUNCATE TABLE locks the whole table to remove data from a table; thus, this command also uses less transaction space than DELETE . Finally, Oracle requires the DROP ANY TABLE system privilege to use this command.
What is difference truncate and delete?
The DELETE statement removes rows one at a time and records an entry in the transaction log for each deleted row. TRUNCATE TABLE removes the data by deallocating the data pages used to store the table data and records only the page deallocations in the transaction log. DELETE command is slower than TRUNCATE command.
Why does truncate or drop table take so long?
The seems to be the most likely reason for DROP/TRUNCATE taking a long time. Run sp_who2 and check the values in tbe Blk column. Any non-zero value in that column is the spid blocking the spid on that row. So check if any blocked spid is your TRUNCATE/DROP process.
Is it normal to use truncate table in MySQL?
I am using truncate table table_name; on a table with around 1 million rows, but it’s been taking too long, running since last 3 hours. Is it normal?
Which is the slowest way to truncate a set?
When we try to truncate a set (20 + Tables in a Row), a particular table is taking 40+ Minuted while rest of the 19 takes only seconds…Please explain. We rerun this test and in that specific table alone the wait is more and that table is 2nd in the list. Table has 2 Columns and has a composite index on oth the columns.
Why does truncate partition take so much time?
To remove old data we truncate partition. Truncate partition is very slow, while truncating partition other seesions which are trying to SELECT/DML from this table goes into some kind of wait and takes longer time. Could you please explain why truncate partition takes more time (some time it takes more than 10 minutes).