Oracle

To create a database using DBCA is, select the ASM disk, but cannot discover the ASM disk Group Because there are two scripts that need to be executed when the grid is installed, one of the scripts is/u01/app/orainventory/orainstroot.sh, which

Question one: which process is responsible for hard parsing. The shared pool setting is unreasonable besides the low hit rate. When it comes to soft parsing (soft prase) and hard parsing (hard prase), let's not mention Oracle 's handling of SQL .

Today, the customer visited (Japanese) and asked me the difference between DB2 and Oracle. Because it's not a DBA, I haven't really summed it up. But my first feeling: One is instance, one is database. Building Ora libraries and DB2 libraries is not

How to log on to Oracle's Sql*plus with SYS users:SysOracleORCL as Sysdba Oracle's UNDOTBS01.DBF file is too big a solution: --Create a new small space for the undo TablespaceCREATE UNDO tablespace UNDOTBS2 datafile '

1. Description of the error [INS-32052] The Oracle Base folder and the Oracle home folder location are also 2. Cause of Error The Oracle Base folder and Oracle home folder locations are also 3, the solution of the method Oracle Base folder and

The city board has a large number of DB file async I/O submit wait events in the dual random AWR reportRefer to two articles:Case Oracle Wait Event db file async I/O submit cause and workaroundDB file Async I/O Submit wait Event optimizationSee if

**************************************Errpt**************************************[Ph2oldb2:root]:/>errptIDENTIFIER TIMESTAMP T C resource_name DESCRIPTIONfe2dee00 0726213218 P S sysxaixif DUPLICATE IP ADDRESS detected in the NETfe2dee00 0726212818 P

This article is original article, reprint please indicate source: http://blog.csdn.net/msdnchina/article/details/44726875In a recently processed case (11.2.0.4 version of Oracle DB), the blocking Txn ID for DDL was encountered for this wait

Recently in a project, need to add a log function, need to use log4net log, data inserted into the Oracle database, after a long time the study finally succeeded. Record the method for future enquiries.Direct write implementation method, in two

In this view, each session that is connected to a database instance has a record. including user session and background process such as DBWR, LGWR, Arcchiver and so on.Common columns in the V$sessionV$session is the basic information view that is

1. Preparatory work1.1 Getting the Oracle JDBC Jar packageBaidu Cloud Disk: Http://pan.baidu.com/s/1boOLzOF file path PowerDesigner 16.6.1\jdbc\ojdbc6.jar1.2 Configuring environment Variables ClasspathCopy Ojdbc6.jar to C:\jdbc\ojdbc6.jarConfigure

When we operate on an Oracle database, we sometimes want to manipulate some of the data after we have finished querying the results, and when we click Edit (a lock flag), we are prompted with the error in the above question: These query results are

It is implemented with the conversion function of Oracle encoding, which is feasible after testing.Sql> SELECT *2 from (SELECT ' ABCD ' C1 from dual3 UNION ALL4 SELECT ' AB Test CD ' C1 from dual5 where C1 <> CONVERT (C1, ' us7ascii ', ' ZHS16GBK ');

When importing data using the IMPDP data pump in Oracle, if you have already created a user before importing, you will be prompted with an error: "ORA-31684: Object type already exists", such as:In fact, this problem is not serious, you can not

Transferred from: http://www.2cto.com/database/201312/265514.htmlRecently completed a (IBATIS.NET+MVC) project database + code migration work, you can toss me ~ ~ ~Ibatis.net is an ORM framework, specifically introduced can ask Niang. I didn't use

How to determine whether a string contains Chinese characters in OracleI. 1 blog document structure diagram650) this.width=650; "title=" wps3d5d.tmp "border=" 0 "alt=" wps3d5d.tmp "src=" http://s3.51cto.com/wyfs02/M02/6E/06/ Wkiom1vxp23zkq1caad_dmbe8

Each server and background process writes to a trace file. When a-process detects an internal error, it writes information about the error to its trace file. The file name format of a trace file is Sid_processname_unixpid.trc, where:SID is the

Oracle Study--RESMGR:CPU Quantum wait eventThe "Resmgr:cpu Quantum" wait event appears in the AWR report:650) this.width=650; "Src=" http://img.blog.csdn.net/20150602162750478?watermark/2/text/

WMSYS. WM_CONCAT does not appear in 12c because WMSYS. WM_CONCAT is an oracle supported internal function that is included in the oracle workspace manager component (wmsys user). This function is used internally by for workspace manager.This means

An error ORA-06553: PLS-801: internal error [56327] in alertlog in the database was received todayErrors in file/mydb/db/oradata01/dbsepus/diag/rdbms/dbsepus/trace/dbsepus_cjq0_11056.trc:ORA-00604: error occurred at recursive SQL level 1ORA-06544: