Chapter 3
... is set to NONE for OS authentication • Password file authentication stores user names and passwords and group membership in an encrypted file in the OS • Set REMOTE_LOGIN_PASSWORDFILE to EXCLUSIVE for password file authentication • The ORAPWD utility generates the password file for SYSDBA and SYSOPE ...
... is set to NONE for OS authentication • Password file authentication stores user names and passwords and group membership in an encrypted file in the OS • Set REMOTE_LOGIN_PASSWORDFILE to EXCLUSIVE for password file authentication • The ORAPWD utility generates the password file for SYSDBA and SYSOPE ...
Document
... Transactions should be executed so that it is as though they executed in some serial order ...
... Transactions should be executed so that it is as though they executed in some serial order ...
Oracle Database 12c Essentials Exam Study Guide
... 1) “You are creating price list modifiers in Advanced Pricing. Your customer has three requirements: X, Y, Z. Identify the two steps that must be completed in order to meet those requirements. 2) “You are running a two-instance database with six redo logs defined. You decide to add a third thread to ...
... 1) “You are creating price list modifiers in Advanced Pricing. Your customer has three requirements: X, Y, Z. Identify the two steps that must be completed in order to meet those requirements. 2) “You are running a two-instance database with six redo logs defined. You decide to add a third thread to ...
Database Theory - Binus Repository
... Tools include design tools , performance tools , special interfaces , etc. – Operators and maintenance personnel : Work on running and maintaining the hardware and software environment for the database system. ...
... Tools include design tools , performance tools , special interfaces , etc. – Operators and maintenance personnel : Work on running and maintaining the hardware and software environment for the database system. ...
PDB-DeepDive - DBCloudShifu
... – PDB can have its own Temp – DataGuard at CDB level – Oracle-supplied objects such as views, PL/SQL, etc., are shared across all PDBs ...
... – PDB can have its own Temp – DataGuard at CDB level – Oracle-supplied objects such as views, PL/SQL, etc., are shared across all PDBs ...
Database Systems, Ch 17
... 3. Local errors or exception conditions detected by the transaction: ...
... 3. Local errors or exception conditions detected by the transaction: ...
Lazy Evaluation of Transactions in Database Systems
... and increase resource utilization. In fact, deterministic database systems such as Calvin and VoltDB already implement exactly the machinery required for this type of lazy execution—but they replay the log eagerly rather than waiting for new read requests to prompt them along. This is because very l ...
... and increase resource utilization. In fact, deterministic database systems such as Calvin and VoltDB already implement exactly the machinery required for this type of lazy execution—but they replay the log eagerly rather than waiting for new read requests to prompt them along. This is because very l ...
Lazy Evaluation of Transactions in Database Systems
... and increase resource utilization. In fact, deterministic database systems such as Calvin and VoltDB already implement exactly the machinery required for this type of lazy execution—but they replay the log eagerly rather than waiting for new read requests to prompt them along. This is because very l ...
... and increase resource utilization. In fact, deterministic database systems such as Calvin and VoltDB already implement exactly the machinery required for this type of lazy execution—but they replay the log eagerly rather than waiting for new read requests to prompt them along. This is because very l ...
Introduction - Gavin Soorma
... Moving data using transportable tablespaces is much faster than performing either an export/import or unload/load of the same data. This is because the datafiles containing all of the actual data are simply copied to the destination location, and you use an import utility to transfer only the metada ...
... Moving data using transportable tablespaces is much faster than performing either an export/import or unload/load of the same data. This is because the datafiles containing all of the actual data are simply copied to the destination location, and you use an import utility to transfer only the metada ...
Data Access Patterns
... • i.e. automatic transaction recovery is based on use of transaction history which saves addresses and ”before images” of all changed / deleted rows • For inserted rows the ”before image” is empty • In ROLLBACK operation the server simply restores the before images of all rows affected by the transa ...
... • i.e. automatic transaction recovery is based on use of transaction history which saves addresses and ”before images” of all changed / deleted rows • For inserted rows the ”before image” is empty • In ROLLBACK operation the server simply restores the before images of all rows affected by the transa ...
paper - VLDB Endowment
... up-to-date and consistent, which usually implies additional overhead. Different approaches to replication management have been studied so far. One approach from standard database technology is eager replication which synchronizes all copies of an object within the same database transaction [3]. Howe ...
... up-to-date and consistent, which usually implies additional overhead. Different approaches to replication management have been studied so far. One approach from standard database technology is eager replication which synchronizes all copies of an object within the same database transaction [3]. Howe ...
Document
... scheduler (sometimes referred to as the lock manager). This module is responsible for implementing a particular strategy for concurrency control. If a failure occurs during the transaction, then the database could be inconsistent. It is the task of the recovery manager to ensure that the database in ...
... scheduler (sometimes referred to as the lock manager). This module is responsible for implementing a particular strategy for concurrency control. If a failure occurs during the transaction, then the database could be inconsistent. It is the task of the recovery manager to ensure that the database in ...
Distributed Databases
... A network is said to be partitioned when it has been split into two or more subsystems that lack any connection between them – Note: a subsystem may consist of a single node ...
... A network is said to be partitioned when it has been split into two or more subsystems that lack any connection between them – Note: a subsystem may consist of a single node ...
งานนำเสนอ PowerPoint
... scheduler (sometimes referred to as the lock manager). This module is responsible for implementing a particular strategy for concurrency control. If a failure occurs during the transaction, then the database could be inconsistent. It is the task of the recovery manager to ensure that the database in ...
... scheduler (sometimes referred to as the lock manager). This module is responsible for implementing a particular strategy for concurrency control. If a failure occurs during the transaction, then the database could be inconsistent. It is the task of the recovery manager to ensure that the database in ...
r – s
... entity sets becomes a super key of the relation. For binary many-to-one relationship sets, the primary key of the “many” entity set becomes the relation’s primary key. For one-to-one relationship sets, the relation’s primary key can be that of either entity set. For many-to-many relationship s ...
... entity sets becomes a super key of the relation. For binary many-to-one relationship sets, the primary key of the “many” entity set becomes the relation’s primary key. For one-to-one relationship sets, the relation’s primary key can be that of either entity set. For many-to-many relationship s ...
Document
... – waiting for prepare: abort the transaction, send abort message to coordinator. Alternatively, it could wait for the coordinator to ask for prepare. – Waiting for decision: forward transaction to recovery process. Recovery process executes status-transaction call to the coordinator. Such a transact ...
... – waiting for prepare: abort the transaction, send abort message to coordinator. Alternatively, it could wait for the coordinator to ask for prepare. – Waiting for decision: forward transaction to recovery process. Recovery process executes status-transaction call to the coordinator. Such a transact ...
Object operations benchmark
... disk access. We believe there is a place fbr a database system gap between these two systems, performing close to 1,000 second on typical How this ...
... disk access. We believe there is a place fbr a database system gap between these two systems, performing close to 1,000 second on typical How this ...
A Methodology of A Database Schema Design Using
... produced by the integration of simultaneously and independently designed subschemas. The notion of a subschema is defined using the concepts of the relational data model, according to the appropriate external schema, which is used to express a user view onto a future database, on the conceptual leve ...
... produced by the integration of simultaneously and independently designed subschemas. The notion of a subschema is defined using the concepts of the relational data model, according to the appropriate external schema, which is used to express a user view onto a future database, on the conceptual leve ...
Query Example
... ensures that all balances are considered To find the average account balance at only those branches ...
... ensures that all balances are considered To find the average account balance at only those branches ...
Joins and subqueries
... A subquery can be defined as a SELECT query that returns a single value Subqueries are nested within a SELECT, INSERT, UPDATE, or DELETE statement Subqueries can be used to retrieve data from multiple tables and can be used as an alternative to a join Subqueries can also be used inside the WHERE ...
... A subquery can be defined as a SELECT query that returns a single value Subqueries are nested within a SELECT, INSERT, UPDATE, or DELETE statement Subqueries can be used to retrieve data from multiple tables and can be used as an alternative to a join Subqueries can also be used inside the WHERE ...
2.0 The Background of Database Systems
... This segment proposes different architectures for database systems. The centralized, distributed, parallel, and web-based designs are presented each with its strengths and weaknesses and the concrete reasons for their selection. The segment recommends using web enabled centralized databases unless t ...
... This segment proposes different architectures for database systems. The centralized, distributed, parallel, and web-based designs are presented each with its strengths and weaknesses and the concrete reasons for their selection. The segment recommends using web enabled centralized databases unless t ...
cos346day21
... • The sp_grantdbaccess procedure can be executed within SQL Query Analyzer to create a database user account and associate it with an existing Windows users account or SQL Server security login account. • This example associates a database user account named robertsmith with a Windows user account ...
... • The sp_grantdbaccess procedure can be executed within SQL Query Analyzer to create a database user account and associate it with an existing Windows users account or SQL Server security login account. • This example associates a database user account named robertsmith with a Windows user account ...
Oracle Database Appliance Frequently Asked Questions
... Customers are only required to license processor cores that they plan to use. In other words, the Oracle Database Appliance enables customers to “pay-as-you-grow” and purchase database licenses using a sub-capacity model. ...
... Customers are only required to license processor cores that they plan to use. In other words, the Oracle Database Appliance enables customers to “pay-as-you-grow” and purchase database licenses using a sub-capacity model. ...
PPT - Ajay Ardeshana
... In case of immediate update the transaction log file is used in following way : When a transaction T begins is written to log file.
When write operation is performed, a record containing the
necessary data is written to the transaction log file.
Once the transaction log is writte ...
... In case of immediate update the transaction log file is used in following way : When a transaction T begins