ROLLBACK → Purpose Use the ROLLBACK statement to undo work done in the current transaction, or to manually … end transactions in application programs using either a COMMIT or ROLLBACK statement. If you do not
rollback() → This method drops all changes made since the previous commit or rollback, and releases any database … locks currently held by the session. Syntax void rollback();
rollback() → public synchronized void rollback() Rollback any messages done in this transaction and releases any … Throws JMSException - if JMS implementation fails to rollback the the transaction due to some internal error.
Rollback Method → Feedback Rollback Method See Also Example Applies To OraConnection OraDatabase OraSession Description … .Rollback orasession.Rollback oradatabase.Rollback Remarks When this method is invoked, all … rollback request. If they do not cancel the request, they are then advised when the rollback
Rollback Method → Master Index Feedback Rollback Method Applies To OSession Description This method rolls back the … current transaction. Usage oresult Rollback (oboolean startnew = FALSE) Arguments startnew If TRUE a … a Rollback. It is an error to call Rollback when no transaction is in progress. Calling Rollback
Rollback Contention → Description Rollback segments are portions of the database that record the actions of transactions … in case a transaction is rolled back. Rollback segments are used to provide read consistency … , support rollback transactions, and recover a database. Proper allocation of rollback segments make for … optimal
ROLLBACK Procedure → This procedure is equivalent to following SQL statement: ROLLBACK Here for completeness. This is already implemented as part of PL/SQL.
ROLLBACK Statement → The ROLLBACK statement is the inverse of the COMMIT statement. It undoes some or all database
Rollback Method Example → Feedback Rollback Method Example This example demonstrates the use of BeginTrans and Rollback to group a
Rollback (ODatabase) Method → Master Index Feedback Rollback (ODatabase) Method Applies To ODatabase Description Ends the current … transaction and rolls back all pending changes to the database. Usage oresult Rollback (void) const … session or connection are given the opportunity to cancel the rollback request. If they do not cancel … the request, they are
Rollback of Transactions → uncommitted transaction. Oracle uses undo tablespaces or rollback segments to store old values. The … called a savepoint. All types of rollbacks use the same procedures: Statement-level rollback (due to … statement or deadlock execution error) Rollback to a savepoint Rollback of a transaction due to user … request
Configuring Rollback Segments → Automatic undo management is the preferred way of handling rollback space. Automatic undo … set of statically allocated rollback segments. The creation and allocation of space among the undo … segments is handled automatically by the Oracle server. With rollback segments, one or more … tablespaces are created; rollback
Managing Rollback Segments → If you choose to use rollback segments to store undo, the following sections guide you in their … management: Guidelines for Managing Rollback Segments Creating Rollback Segments Altering Rollback … Segments Explicitly Assigning a Transaction to a Rollback Segment Dropping Rollback Segments
User Rollback Ratio → oraDbSysUserRollbacks / (oraDbSysUserCommits + oraDbSysUserRollbacks) is the user rollback ratio … . The user rollback ratio indicates the rate at which application transactions are failing. Rolling
ROLLBACK (Executable Embedded SQL) → Purpose To undo work done in the current transaction.
ROLLBACK (Executable Embedded SQL) → transaction to the specified savepoint. If you omit this clause, the ROLLBACK statement rolls back … transactions, query the data dictionary view DBA_2PC_PENDING. ROLLBACK statements with the FORCE … statement after a COMMIT, ROLLBACK or connection to the database. A transaction ends with a COMMIT … statement, a ROLLBACK
Using the ROLLBACK Statement → You use the ROLLBACK statement to undo pending changes made to the database. For example, if you … make a mistake, such as deleting the wrong row from a table, you can use ROLLBACK to restore the … original data. The ROLLBACK statement has no effect on the values of host variables or on the flow of … control in your program. Specifically,
DROP ROLLBACK SEGMENT → Purpose Use the DROP ROLLBACK SEGMENT to remove a rollback segment from the database. When you drop … a rollback segment, all space allocated to the rollback segment returns to the tablespace. Note: If … rollback segments. In that mode, you cannot create or alter a rollback segment.
Dropping Rollback Segments → You can drop rollback segments when the extents of a segment become too fragmented on disk, or the … segment needs to be relocated in a different tablespace. Before dropping a rollback segment, make … sure that the status of the rollback segment is OFFLINE. If the rollback segment that you want to drop … dropped.
Viewing Rollback Segment Information → This section presents views that can be used to obtain and monitor rollback segment information … : Rollback Segment Views Displaying Rollback Segment Information Monitoring Rollback Segment Statistics … Displaying All Rollback Segments Displaying Whether a Rollback Segment Has Gone