Oracle

In summary, it is toss.1, 11G of Oracle Backup (originally did not know), to the 10G of Oracle Recovery, recovery when the tip is incorrect, so the long revision of the version number began.2, because the backup is very big, start with UE and so on

Two date Type fields: Start_date,end_date, which calculates the time difference between these two dates (in days, hours, minutes, seconds, milliseconds, respectively):Days:ROUND (To_number (end_date-start_date))Hours:ROUND (To_number (end_date-start_

Private voidsavebinary (InputStream in, Long userId, String fieldName) {SQL SQL=NewSQL ("INSERT into EEAS_USER_ATTH (id,content,user_id,atth_name) VALUES (SEQ_EEAS_USER_ATTH. Nextval,?,?,?) "); Sql.addparameter (NewParameter (Datatype.blob, in));

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The LAG () and lead () statistics functions are able to fetch the first n rows of the same field and the values of the last n rows in a single query . Such operations can be implemented using table joins to the same table, but using lags and leads

Sql> Select COUNT (*) from V$session #当前的连接数Sql> Select Count (*) from v$session where status= ' ACTIVE ' #并发连接数Sql> Select value from v$parameter where name = ' processes '--the maximum number of connections allowed for the databaseSql> Show

First, what is the role of controlling the document?The control file records the following information:1, the creation time of the database2. Location of data files3. Location of log filessuch asThe role is to instruct the database to locate the

Software Environment:1. Windows 2000+oracle 8.1.72, the ORACLE installation path is: C:\ORACLEImplementation method:1, start-up settings, Control Panel, management tools, services stop all Oracle services.2, start-up

/**locked*query locked object and analyse Reason,kill it**/select ' alter system kill session ' | | SID | | ',' || serial# | | ''';' From (select distinct A.sid, a.serial#, status, Machi NE, lockwait, logon_time from V$session A,

Yes, you've got the right place for this article! Look down slowly!Did the client ever encounter this error with the server?ORA-12518 TNS: Listener fails to distribute client connectionsis not the server on this machine does not write service name,

First, you need to understand that the physical structure of the database is determined by the operating system files of the database, each Oracle database consists of three types of files: Data files, log files, and control files. The database's

Oracle goldengate Learning-basic concepts and configurations (1) a    goldengate introduction Oracle Golden Gatesoftware is a log-based structured data replication backup software that parses the sourcedatabase online logs or archive logs

Oracle nested tables are rarely used, and the following is a look at how they are stored. With an example, a user is responding to a department.Sql> select * from V$version;BANNER-----------------------------------------------------------------------

Time synchronization between nodes is important for Oracle and is often done by setting up an NTP server before the 11g release. In Oracle 11g, a new CTSS (Cluster time Synchronization Services, cluster synchronization Service) service was added to

 ---description Flash back database---Use the Flashback table to restore the contents of the table to a specific point in time past---Recovering from a delete table---Use a flashback query to view database content at any point in time---Use the

Oracle Performance Analysis 9: Re-Indexing When an index is faulty, it may cause serious performance problems. index problems include index unavailability and index fragmentation leading to performance degradation. We need some measures to detect

Concurrent execution of mongolerman's backup of a single file If a file is a file of several gigabytes or tens of thousands of megabytes, You Need To parallelize the backup of the file. Generally, one channel can only read one file, however, you

[Oracle11g, 19] index managementI. Index classification: 1. logically divided into: Single Column index and compound index unique index and non-unique index function index domain index 2. Physical score: partition index and non-partition index

How to handle ins_emdb.mk error when installing Oracle10g on CentOS6.2, centos6.2oracle10g When installing Oracle10g on CentOS6.2, the following error is reported: View the log as prompted, and no help information is found, as shown below:Copy

The index and index of the partition technologyAbout Partitioning technology-Index  I. Partition Index classification: Local prefix partition index) Global partition Index) Local non-Prefix partition index (localnon-prefixed partitioned index) 1.1