oracleexclusivelock

Whenastatementmodifiesdata,itstransactionholdsanexclusivelockondatathatpreventsothertransactionsfromaccessingthedata.,沒有這個頁面的資訊。,Exclusive.Ifasessionneedstomodifyasimpleobject,thenanexclusivelockisrequiredontheresourcetopreventanyconcurrentaccess.,ROWSHAREpermitsconcurrentaccesstothelockedtablebutprohibitsusersfromlockingtheentiretableforexclusiveaccess.ROWSHAREissynonymouswith ...,T...

參考資訊如下
Exclusive locks

When a statement modifies data, its transaction holds an exclusive lock on data that prevents other transactions from accessing the data.

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沒有這個頁面的資訊。

Lock Modes - Oracle Internals

Exclusive. If a session needs to modify a simple object, then an exclusive lock is required on the resource to prevent any concurrent access.

LOCK TABLE

ROW SHARE permits concurrent access to the locked table but prohibits users from locking the entire table for exclusive access. ROW SHARE is synonymous with ...

LOCK TABLE statement

The LOCK TABLE statement allows you to explicitly acquire a shared or exclusive table lock on the specified table. The table lock lasts until the end of the ...

Oracle Locks

Exclusive locks are used when the programmer desired exclusive control over a set of rows until their operation has completed. The following command is used to ...

RowTable locks in Oracle 原创

2022年6月24日 — A table lock can be held in any of several modes: row share (RS), row exclusive (RX), share (S), share row exclusive (SRX), and exclusive (X).

What are different types of locks in oracle

2013年4月10日 — Exclusive lock : Only one user/connection are allow to change the data. Update lock : Rows are locked till user made commit/rollback. ... SQL> ...