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What is the last DML statement processed during a commit transaction?
COMMIT; Commits all actions performed by the first DML statement (the DELETE statement) and the last DML statement (the second INSERT statement).
What is last DDL time?
LAST_DDL_TIME is the last time the table had a DDL (structure) change applied, but does NOT include DML (data).
Which is a DML statement?
DML is short name of Data Manipulation Language which deals with data manipulation and includes most common SQL statements such SELECT, INSERT, UPDATE, DELETE, etc., and it is used to store, modify, retrieve, delete and update data in a database.
How to find the last DML operation of a table?
1: Get the last DML time of the table using ORA_ROWSCN pseudocolumn The ORA_ROWSCN pseudocolumn was introduced by Oracle 10g to query the SCN that recorded the final change in the table. Then pass SCN_TO_TIMESTAMP Function can convert SCN to timestamp to find the corresponding time of SCN in the last DML operation.
How can I find out the latest DML time?
And that way, you know where the objects are used – and by how many different points in the code. Like anyone else, developers can inherit some wretched, poorly-documented stuff. A test environment and (hopefully automated) test scenarios can be helpful in such cases.
What does DBA _ tab _ modifications do in Oracle?
DBA_TAB_MODIFICATIONS describes modifications to all tables in the database that have been modified since the last time statistics were gathered on the tables This view is populated only for tables with the MONITORING attribute. It is intended for statistics collection over a long period of time.
Which is the SNN at the row level in DML?
By default, ORA_ROWSCN for each row of records is based on block, which is inaccurate for the last DML time of a row, unless the create table is executed when the table is built. Rowdependencies), which is the SNN at the row-level record level.