Now
... Make sure you have reviewed the log files to check for errors. Save the log files for 1 month. Shutdown the database and startup in regular mode so users can login ...
... Make sure you have reviewed the log files to check for errors. Save the log files for 1 month. Shutdown the database and startup in regular mode so users can login ...
Creating a Table
... • This will give you access to the “personal” database of ‘user’ (In other words, to access “your” database, you have to run it from your own CS account). • You will be presented with a Sqlplus console, in which you type your commands. • To disconnect (and return to your regular shell), type: quit • ...
... • This will give you access to the “personal” database of ‘user’ (In other words, to access “your” database, you have to run it from your own CS account). • You will be presented with a Sqlplus console, in which you type your commands. • To disconnect (and return to your regular shell), type: quit • ...
Part 1 - LSDIS
... subsumption reasoning) can be stacked one on another interface oriented for persistance storage ...
... subsumption reasoning) can be stacked one on another interface oriented for persistance storage ...
Data-Protection Modes Data Guard provides three high
... On the primary database, Data Guard log transport services use the following processes: • Log writer (LGWR) process: LGWR collects transaction redo information and updates the online redo logs. In synchronous mode, it ships redo information directly to the remote file server (RFS) process on the sta ...
... On the primary database, Data Guard log transport services use the following processes: • Log writer (LGWR) process: LGWR collects transaction redo information and updates the online redo logs. In synchronous mode, it ships redo information directly to the remote file server (RFS) process on the sta ...
Document
... Consistency, Isolation, Durability) is a set of properties that guarantee that database transactions are processed reliably. In the context of databases, a single logical operation on the data is called a transaction. For example, a transfer of funds from one bank account to another, even involving ...
... Consistency, Isolation, Durability) is a set of properties that guarantee that database transactions are processed reliably. In the context of databases, a single logical operation on the data is called a transaction. For example, a transfer of funds from one bank account to another, even involving ...
CmpE138-ENCh01
... access to the database, for co-ordinating and monitoring its use, acquiring software, and hardware resources, controlling its use and monitoring efficiency of operations. – Database Designers: responsible to define the content, the structure, the constraints, and functions or transactions against th ...
... access to the database, for co-ordinating and monitoring its use, acquiring software, and hardware resources, controlling its use and monitoring efficiency of operations. – Database Designers: responsible to define the content, the structure, the constraints, and functions or transactions against th ...
CS122_SUMMER_2009_LECTURE_09a
... If you delete a record, and that record is referenced somewhere else, you have an orphaned record! Best solution is to only delete records from the XRefDirectorsMovies table and leave the People table alone since these people may be referenced somewhere else. DELETE FROM XRefDirectorsMovies; ...
... If you delete a record, and that record is referenced somewhere else, you have an orphaned record! Best solution is to only delete records from the XRefDirectorsMovies table and leave the People table alone since these people may be referenced somewhere else. DELETE FROM XRefDirectorsMovies; ...
Parallel Databases - Brown Computer Science
... technique, but with new cost model First choose most efficient sequential plan and then choose how best to parallelize the operations in that plan. Can explore pipelined parallelism as an option Choosing a good physical organization (partitioning technique) is important to speed up queries. ...
... technique, but with new cost model First choose most efficient sequential plan and then choose how best to parallelize the operations in that plan. Can explore pipelined parallelism as an option Choosing a good physical organization (partitioning technique) is important to speed up queries. ...
Oracle RAC Training Course Syllabus in Chennai Oracle 11g R2
... Preparing the Primary Database Setting Initialization Parameters on the Primary Database Backing Up the Primary Database Creating a Control File for the Standby Database Setting Initialization Parameters on the Standby Database Setting Up the Environment to Support the Standby Database ...
... Preparing the Primary Database Setting Initialization Parameters on the Primary Database Backing Up the Primary Database Creating a Control File for the Standby Database Setting Initialization Parameters on the Standby Database Setting Up the Environment to Support the Standby Database ...
T - VUB STAR lab
... avoid this, follow a modified protocol called strict two-phase locking. Here a transaction must hold all its exclusive locks till it commits/aborts. Rigorous two-phase locking is even stricter: here all locks are held till commit/abort. In this protocol transactions can be serialized in the order ...
... avoid this, follow a modified protocol called strict two-phase locking. Here a transaction must hold all its exclusive locks till it commits/aborts. Rigorous two-phase locking is even stricter: here all locks are held till commit/abort. In this protocol transactions can be serialized in the order ...
Hit Ratios (JL Comp) - JL Computer Consultancy
... question - do I really need to buy more memory? However, a frequently overlooked detail of the formula was that it assumed that the database had been designed to operate efficiently so that the effects of extra memory would simply allow the same amount of logical work to be done with fewer physical ...
... question - do I really need to buy more memory? However, a frequently overlooked detail of the formula was that it assumed that the database had been designed to operate efficiently so that the effects of extra memory would simply allow the same amount of logical work to be done with fewer physical ...
PhysDBStor - Microsoft Center
... zeroing out of data pages. Instant file initialization reduces time during the creation of very large databases and tempdb. The previous data on newly allocated space is never zeroed. The previous data gets overwritten with new data when the data page is actually allocated. Avoiding zeroing out appl ...
... zeroing out of data pages. Instant file initialization reduces time during the creation of very large databases and tempdb. The previous data on newly allocated space is never zeroed. The previous data gets overwritten with new data when the data page is actually allocated. Avoiding zeroing out appl ...
Introduction to SAS/ACCESS Software
... update view.one set ... ; delete from view.one where insert into view.one values data view.one; modify view.one; ...
... update view.one set ... ; delete from view.one where insert into view.one values data view.one; modify view.one; ...
course, period
... can be referred to just as if they were tables, but their data is contained in other (base) tables. • Also referred to as virtual tables. CREATE VIEW DBLectures AS SELECT room, hour, weekday FROM Lectures WHERE course = ’TDA357’ AND period = 3; ...
... can be referred to just as if they were tables, but their data is contained in other (base) tables. • Also referred to as virtual tables. CREATE VIEW DBLectures AS SELECT room, hour, weekday FROM Lectures WHERE course = ’TDA357’ AND period = 3; ...
MS SQL SERVER 2005 / 2008 – Management Studio
... To allow saves to be permitted change the following option, on the Tools menu, click Options, expand Designers, and then click Table and Database Designers. Select or clear the Prevent saving changes that require the table to be re-created check box. ...
... To allow saves to be permitted change the following option, on the Tools menu, click Options, expand Designers, and then click Table and Database Designers. Select or clear the Prevent saving changes that require the table to be re-created check box. ...
Inventory Your Files Using SAS
... Trying to get a handle on the number of different types of files on a server or network drives can be daunting. Every year a server is in operation, there are opportunities for users to drop programs, data and other types of files across many directories. After a few years there can be thousands of ...
... Trying to get a handle on the number of different types of files on a server or network drives can be daunting. Every year a server is in operation, there are opportunities for users to drop programs, data and other types of files across many directories. After a few years there can be thousands of ...
ppt
... Long duration: Design edit sessions are very long Exposure of uncommitted data: E.g., partial update to a ...
... Long duration: Design edit sessions are very long Exposure of uncommitted data: E.g., partial update to a ...
Transaction Processing
... Suppose that transaction Ti tries to lock an item X but is not able to because X is locked by some other transaction Tj with a conflicting lock. Wait-die: if TS(Ti)
... Suppose that transaction Ti tries to lock an item X but is not able to because X is locked by some other transaction Tj with a conflicting lock. Wait-die: if TS(Ti)
Document
... 1. Read and execution phase: Transaction Ti writes only to temporary local variables 2. Validation phase: Transaction Ti performs a ``validation test'' to determine if local variables can be written without violating serializability. 3. Write phase: If Ti is validated, the updates are applied to the ...
... 1. Read and execution phase: Transaction Ti writes only to temporary local variables 2. Validation phase: Transaction Ti performs a ``validation test'' to determine if local variables can be written without violating serializability. 3. Write phase: If Ti is validated, the updates are applied to the ...
