Oracle

Receive an alert message Mon May 05 20:08:22 2014 Errors in File/tol/app/oracle/admin/coredb/diag/rdbms/dg_115/coredb/trace/coredb_ora_511.trc (incident=373665): Damage to Ora-01578:oracle data block (file number 46, block number 1101348) ORA-01110:

Indicates that it exists, but it complains when it is deleted: The table or view does not exist.One possible reason is that the table name contains lowercase and can be removed by using the drop command with double quotes containing the table

Usage of InStr and SUBSTR in Oracle Usage of instr in Oracle: The format of the InStr method is INSTR (The source string, the string to find, starting with the first few characters, to find the ordinal number of matches) Returns the location found,

Oracle is thought to think of Oracle databases (their version is: 8i,9i,10g,11g, where I represents the Internet, while G represents grid computing), but Oracle actually has the following product lines:Database: This is the Oracle database we

Oracle Series: Cursor 1, what is a cursor.① retrieves a result set from a table from which the mechanism for interacting with each record is pointed.Operations in the ② relational database are performed on a complete rowset.The rowset returned by

Table size that has two meanings. One is the amount of physical space allocated to a table, regardless of whether space is used or not. You can get the number of bytes in this query:Select Segment_name, bytesFrom User_segmentswhere Segment_type = '

Error when installing RAC: [Oracle@node1 grid]$./runcluvfy.sh stage-pre crsinst-n Node1,node2-verbosePerforming pre-checks for Cluster services setupChecking node reachability ...Check:node reachability from Node "Node1"Destination Node reachable?---

Before finishing an article: Oracle Wait Events Http://blog.csdn.net/tianlesoftware/archive/2010/05/31/5635934.aspx one. Knowledge of waiting events: 1.1 Wait events can be divided into two main categories, that is, idle (IDLE) Wait events and non

The For Loop Pl/sql language of the/* cursor provides the cursor's for loop statement, "Automatically performs the function of the cursor's open,fetch,close statement and circular statement," and when entering the loop, the cursor for Loop statement

--Create a userCreate user Han identified by Han default tablespaceUsers temporary tablespace Temp;Grant Connect,resource,dba to Han; Grant the user Han Developer rights --------------------action on a table----------------------------Create a

In Oracle/plsql, the trim function removes all specified characters either from the beginning or the ending of a string. The syntax for the TRIM function is:Trim ([Leading|trailing|both[trim_character]] string1) Leading-remove trim_string from the

Oracle 11g Disconnect Network installation, there is no detection net function, so after installation, Netstat-an found that automatic monitoring is 127.0.0.1:1521, so that after the installation, the other host can not connect, what is the reason.

I. Environmental preparedness Install package: 1.vmware-workstation-full-11.1.0-2496824.exe 2.centos-7-x86_64-dvd-1511.iso 3.linux.x64_11gr2_database _1of2.zip Linux.x64_11gR2_database_2of2.zip The above feel is not the key, not to download the

Oracle Database Face Test SummaryApril 27, 2017 22:41:44Hits: 92711. SQL Statement ClassificationDQL (data query Language) SELECTDML (Data manipulation language) Insert, delete, updateDDL (data definition Language) Create, DROP, alterDCL (Data

WINDOWS10 Remote Desktop Connection error message:Find the method on the internet but what is "Win10 family " Cannot use this method, the specific operation can see the last reference link!!!!Policy Path: Credential assignment, System, computer

I. Common operation of Oracle database create a constraint when creating a table1. Add constraints when creating a table----constraints are rules that define what data in a table should follow or conditions that meet----constraints are built on

Installing JAVA-JDKThis part of the tutorial is a lot, you can follow the online tutorial to installInstalling SqldeveloperDownload Sqldeveloper Linux RPM http://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/index.htmlSince

Activities:2018 Wind Brother Oracle database disciple Video offers:Course Name:Oracle DBA Database Senior Engineer Training Topic 1.1 (series 78 sets. Beyond OCP/OCM)Featured Links:Http://edu.51cto.com/topic/1121.htmlBuy it and send it:1. Send wind

Environment: VS2017 + ABP official template (excluding zero) +oracle 11gx64db + Oracle 11gx32client (plsql tool access)I. Download and operation of ABP project1. Create an ABP project. Go to the official website

SELECT COUNT(DISTINCTtmp. PLATE) Totalnum, Tmp.newtime from ( SELECTT. License_plate PLATE, To_char (T. create_time,'Yyyymmddhh24mi') Oldtime,--the original Time Case whenSUBSTR (To_char (T. create_time,'mi'),