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Comandos DBCC Categoría Validación. DBCC CHECKCATALOG - SQL SERVER DBA. SQL Server Administration Database integrity check What is database integrity check?


In general the database integrity task includes checking the allocation and structural integrity of all the objects in the specified database. It can contain checking the database indexes. It’s a good practice to run database integrity check on a set schedule, however there are some occasions when you will need to run check in some other times eg after hardware failure, electrical surge, the server unexpected shut down.

SQL Server provides number of commands to check the logical and physical integrity of all the objects in the specified database: Como copiar/clonar de forma rápida un base de datos? Cast vs. Convert - TeamSQL Blog - Cross-platform SQL Client. When working with Microsoft’s SQL Server (and by extension, T-SQL), you have two options when making explicit conversions: CAST and CONVERT.

Cast vs. Convert - TeamSQL Blog - Cross-platform SQL Client

Many people use them frequently, and quite often interchangeably, but there are some cases when one is a better choice than the other. This post covers the similarities and the differences between the two, as well as when you’re better off using one over the other. Similarities When doing explicit data conversions, CAST and CONVERT are available to you. How to manually DROP DATABASE in Oracle-RAC Environment. My Environment Details:- Oracle11g r2 RAC/GRID 2 Node Oracle Database Name:DEMO.

How to manually DROP DATABASE in Oracle-RAC Environment.

How to Copy Files Across a Network/Internet in UNIX/LINUX (Redhat, Debian, FreeBSD, etc) - scp tar rsync. How to Copy Files Across a Network/Internet in UNIX/LINUX (Redhat, Debian, FreeBSD, etc) - scp tar rsync One of the many advantages of Linux/UNIX is how many ways you can do one thing.

How to Copy Files Across a Network/Internet in UNIX/LINUX (Redhat, Debian, FreeBSD, etc) - scp tar rsync

This tuturial is going to show you some of the many ways you can ttransfer files over a network connection. In this article/tutorial we will cover rsync, scp, and tar. Please note that there are many other ways these are just some of the more common ones. The methods covered assume that SSH is used in all sessions. Sql - How to convert DateTime to VarChar. Examples using grep. 4.2.1.

Examples using grep

What is grep? Grep searches the input files for lines containing a match to a given pattern list. When it finds a match in a line, it copies the line to standard output (by default), or whatever other sort of output you have requested with options. Though grep expects to do the matching on text, it has no limits on input line length other than available memory, and it can match arbitrary characters within a line. If the final byte of an input file is not a newline, grep silently supplies one.

Monitoring SGA (Free Memory) Using v$sgastat. Home > Monitoring SGA Using v$sgastat > Monitoring SGA (Free Memory) Using v$sgastat In this article, we will discuss how to get monitor free memory in System Global Area (SGA) in Oracle 10g.

Monitoring SGA (Free Memory) Using v$sgastat

The System Global Area (SGA) Memory Structures in data. The SGA is read/write. A system global area is a group of shared memory areas that dedicated to an Oracle database instance. For example Large Pool, Shared Pool, Java Pool etc. Tuning the Shared Pool and the Large Pool. The library cache stores executable forms of SQL cursors, PL/SQL programs, and Java classes, which are collectively referred to as the application code.

Tuning the Shared Pool and the Large Pool

This section focuses on tuning as it relates to the application code. When the application code is executed, Oracle Database attempts to reuse existing code if it has been executed previously and can be shared. If the parsed representation of the SQL statement exists in the library cache and it can be shared, then the database reuses the existing code. This is known as a soft parse, or a library cache hit. If Oracle Database cannot use the existing code, then the database must build a new executable version of the application code. In order to perform a hard parse, Oracle Database uses more resources than during a soft parse. DBA Scripts: unused_space.sql. Dbms_space unused_space Tips. Ask TOM "dbms_space.free_space" Here is an example showing how to use dbms_space and how to interpret the output.

Ask TOM "dbms_space.free_space"

Basically between the 2 procedures free blocks and unused space, we'll be able to get: Free Blocks...... Number of blocks on the freelist Total Blocks..... Total blocks allocated to the table Total Bytes...... Total bytes allocated to the table Unused Blocks.... Segments fragmentation with space management MANUAL, Oracle Apps DBA Kaparelis. Posted by: Eleutherios Tsekouras Note: The method described here will only work on segments stored in tablespaces with SEGMENT_SPACE_MANAGEMENT=MANUAL.

Segments fragmentation with space management MANUAL, Oracle Apps DBA Kaparelis

When-to-use-rebuild-vs-coalesce-vs-shrink. Find out the table size You can group by tablespace, owner and segment type and see the total space occupied in MBytes.


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Lab128 Freeware Download. No additional Oracle licenses required to use this freeware software! No OEM, or Performance/Diagnostic packs needed. Lab128 freeware is an important tool for DB administrators, developers, and performance specialists. It shows what Oracle instance is doing at the moment, how resources are used, how it is executing long running queries, and many other Oracle internal functioning. This is valuable both in production and development environment. When developing or troubleshooting large queries, this tool is indispensable because it can uncover ongoing performance problem without waiting for the query to complete.

Using Automatic Memory Management. Data Guard Background processes tips. How To Check Environment Variables for a Running Process ? Oracle Background processes. You can see the Oracle background processes with this query: Scenarios Using the DGMGRL Command-Line Interface. This chapter describes the prerequisites for getting started using the Data Guard command-line interface (DGMGRL). It also describes scenarios that demonstrate how to use DGMGRL to create, manage, and monitor a broker configuration. This chapter contains the following sections: 7.1 Prerequisites for Getting Started One of the prerequisites for using DGMGRL is that a primary database and any standby databases must already exist. The DG_BROKER_START initialization parameter must be set to TRUE for all databases in the configuration. Backing Up the Database: Advanced Topics. This chapter explains advanced RMAN backup procedures. This chapter contains the following topics: Limiting the Size of RMAN Backup Sets.

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