Oracle

For SQL spool data, it is best to define your own format to facilitate direct import of the program, SQL statements such as:selecttaskindex| | ' | ' | | commonindex| | ' | ' | | tasktype| | ' | ' | | To_number (To_char (sysdate, ' YYYYMMDD ')) from

Oracle 10g 11g RAC installed on personal virtual machine The following is the Toggle Script command#10g RAC >11g rac****************************************###############Cat/etc/inittab >/etc/inittab10gcat/etc/inittab11g

An analysis of relevance designParadigmIdeally, no matter what a table in the database will be corresponding to a real life object, such as the player is an object, the team is an object, the schedule is an object, the result of the game is an

http://blog.csdn.net/leshami/article/details/23763963Index reconstruction is an issue that has been hotly debated. Of course, Oracle has its own views, and many of our DBAs follow this guideline to rebuild the index, which is that Oracle recommends

"E Mentor Network" when using Oracle to develop a lot of times encountered some of your unexpected problems, often in the details of an unavoidable error, the following to share an unforgettable event, this time shows that the basic knowledge is

1. Common usage of decode:Decode (condition, value1,result1[, value2, Result2],default_result)Decode is actually equivalent to an IF condition function condition equivalent to an input value, and value I is the parameter list, if the input value is

Restore just copy the physical file, recover'll consistent the database.Restore is a restored, file-level restore. is the physical file restore.Recover is recovery, data-level recovery. Logical recovery, such as application archive logs, redo logs,

Fart on the local environment Win7+nginx1.5.9+php5.4.15+pdo_oci Done, the result is normal. Upload the test. Centos5.9+nginx1.5.9+php5.4.14+pdo_oci Result: Command line normal, fast_cgi mode normal So upgrade PHP version to the latest php5.4.33

First, row to columnThe following format is requiredConvert to:This is the most common row-to-column, the main principle is to use the Decode function, aggregation function (sum), combined with the group by group implementation of the[SQL]View

1. Nvl functionNVL (EXPR1,EXPR2), returns EXPR2 if Expr1 is empty;2. NVL2 functionNVL2 (EXPR1,EXPR2,EXPR3), returns EXPR3 if Expr1 is empty, otherwise returns EXPR2;3. Nullif functionNullif (EXPR1,EXPR2), if EXPR1=EXPR2, returns NULL, otherwise

The Awrdd is used for a comparison of two awr snapshots to achieve performance at different times of the year.Run the following statement for example to get AWRDD:@?/rdbms/admin/awrddrpt.sql2025 23 February 07:12 12026 23 February 12027 23

Interacting with Oracle DBThe following demo sample describes Oracle DB operations from the most significant level. This demo sample illustrates an Oracle DB configuration in which the user and the associated server processes are performed on

I. OverviewWe know that in Oracle, every modification of a piece of data produces a redo (that is, redo, which records the modified content). The goal is to back up the modified data to facilitate future re-work. Now there is a problem. Whenever

1. Description of the problem:Data migration between databases is a common job, and the Exp/imp tool is a common data migration and conversion tool that is most commonly used in cross-platform migrations because of its platform-agnostic export files.

Oracle has its own Dblink function, which is to logically treat multiple Oracle databases as a single database, meaning that objects in another database can be manipulated in one database, for example, we create a new data database1, We need to

On the Linux operating system database server, when you log on to an Oracle 10.2 DB instance using "Sqlplus/as sysdba", the login fails with the ORA-01031: insufficient permissions.The operation that is logged on the server where the database is

In recent projects, there is a customer requirement that is divided into a total number of users every 5 minutes for all time points per day.The data scenarios are:A game in which all users online time data (of course simple summation, may have

1 Login:--Run->sqlplus-> js45st/[email protected]2 Table Space:--Create table space, specify data file (recommended under Oracle directory), initialize 100M self-increment 50Msql> Create tablespace tbs_jsnet datafile '

Using Notepad ++ to Execute Oracle SQL, executeoracle Link: http://www.toadworld.com/products/toad-for-oracle/ B /weblog/archive/2013/08/21/using-notepad-to-execute-oracle-sql.aspx Notepad ++ is a very useful text editing tool. It is also very

Listener. ora adds the listening port and listener. ora listens. A simple listener. ora # Listener. ora Network Configuration File: d: \ app \ zyd \ product \ 11.2.0 \ dbhome_1 \ network \ admin \ listener. ora # Generated by Oracle configuration