How can I find out when a table was created?
Finally, you can also find the created date and time of a table is to open the properties window of the table from object explorer. This is an easy way if the database has few tables. This way of identifying the table’s created date will become difficult if the database has thousands of tables.
How does Rownum work in Oracle?
For each row returned by a query, the ROWNUM pseudocolumn returns a number indicating the order in which Oracle selects the row from a table or set of joined rows. The first row selected has a ROWNUM of 1, the second has 2, and so on.
What is last DDL time Oracle?
LAST_DDL_TIME Timestamp for the last modification of the object and dependent objects resulting from a DDL statement (including grants and revokes) TIMESTAMP Timestamp for the specification of the object (character data)
What are the DDL commands in Oracle?
Data Definition Language (DDL) Statements
- Create, alter, and drop schema objects.
- Grant and revoke privileges and roles.
- Analyze information on a table, index, or cluster.
- Establish auditing options.
- Add comments to the data dictionary.
When was the last time a table was accessed in Oracle?
If you have them, you can have a look at dba_hist_XXX views, or only have a look at the rest of the columns in the views used here: you have info about reads, writes, locks and many more. EDIT: Thanks to @APC for the warning. DBA_HIST_XXX are views from Diagnostics Pack that require special license.
What’s the pseudo column called in Oracle 10g?
Some research into checking when a table’s records were last updated, modified, or deleted has lead me to the pseudo column known as ora_rowscn. I take note of the number.
When to increment Ora _ rowscn in Oracle 10g?
ora_rowscn is always incremented when a row changes – but in a default configuration it can also be incremented when a row does not change If you need to check the whole table for udates, one method is to use auditing.
How to get the last value of a column in Oracle?
Starting with oracle 10g you can use the LAST_VALUE function. Assuming if “balance” per student can be ordered by some time variable, and if student_id is unique within academic_year, class: