Selecting from and updating the same table oracle a good head line for a dating site

Locks can be acquired at both the table and sub-partition level with partitioned tables in Oracle.A transaction acquires a table lock when a table is modified in the following DML statements: INSERT, UPDATE, DELETE, SELECT with the FOR UPDATE clause, and LOCK TABLE.

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to allow inserting and updating exactly the desired data.There is no hard limit on the exact number of row locks held by a statement or transaction.

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