Oralce9i requires the following compiling environment:
Run the following command on the terminal:
# Rpm-q gcc glibc-headers glibc-kernheaders glibc-devel compat-libstdc ++ CPPCompat-gcc
Gcc-4.1.1-30
Glibc-headers-2.5-3
Package glibc-kernheaders
In Linux, you can use commands to perform some operations. record the following:
Oemapp dbastudio Open the Enterprise Manager GUI
Opemapp ConsoleOpen the Enterprise Manager graphical interface (same as the preceding command .)
Sqlplus/As
Http://kidiaoer.iteye.com/blog/1064902
In Oracle, if Max is obtained for the varchar type, 9 is larger than 10. This is because of the data type. We need to convert varchar to the number type.
Use the to_number () function.
Example:
Insert
[Problem]:
1. Oracle control files and online redo logs do not implement multi-path mirroring, resulting in reduced database reliability.
2. data files are not adjusted based on the I/O load, resulting in Io imbalance between disks and high I/O
The database server and the Primary Application Server are deployed on two servers to achieve suncluster. In this case, troubleshooting is difficult.
Because the Oracle service is monitored by the cluster software, the cluster software will try to
Oracle RAC involves many processes, and the log directory structure of each process is also very complex. If you do not know the startup sequence and relationship of each process, and the location of the corresponding process log, it is very
Environment: VM + redhat9 + oracle9.2
1. Modify/etc/oratab content
Oracle_sid:/u01/APP/Oracle/product/10.2.0/db_1: N is changed to the following content:# Add below content# $ Oracle_sid: $ ORACLE_HOME:
First, check which tables are locked.
Select B. Owner, B. object_name, A. session_id, A. locked_modeFrom v $ locked_object A, dba_objects BWhere B. object_id = A. object_id;
Owner object_name session_id locked_mode---------------------------------
-- In Oracle Database Operations, we sometimes use lock table queries and unlock and kill processes. How do we implement these operations? This article mainly introduces this part. -- Lock Table query
CodeSelect count (*) from V $ locked_object;
The overall structure of ofa is divided into two layers: Software-Oracle software and files (database)
Software Directory structure
Oracle_base/-------------------------------------- the name oracle is the most
/Product ------------------------------
/*Name: stp_tianjialianjiefuwuqiFunction: Add a linked server and set its server options and security options.Steps: Call the system stored procedure sp_addmediaserver to add a linked serverCall the system stored procedure sp_serveroption to set the
Connect using the system. Data. oracleclient. dll component:
First, configure the webconfig file;
Then you can add a reference to system. Data. oracleclient. DLL to write it on the page.CodeUsing system. Data. oracleclient;
Common
Reference: http://devbbs.doit.com.cn/archiver/tid-18781.html
Because the database server is installed in the lab, if you want to access the database server in the dormitory, you must make certain configurations. General remote configuration can be
You can use the connect by and start with clauses in the SELECT command to query the tree structure of the table. The command format is as follows:Select .....Connect by {prior column name 1 = column name 2 | column name 1 = prior column name
Method 1
Today, I want to compare two characters in the stored procedure, but I found that the expected results were not obtained. The main problem is that the comparison of any value and null results are null, I found two methods on the Internet
Semsys: seminfo_semmni DescriptionMaximum number of semaphore identifiers.
Data TypeSigned integer
Default10
Range1 to 65,535
Dynamic?No
ValidationCompared to sema_index_max (currently 65,535) and reset to that value if larger. A warning
There is a problem with uninstalling the Oracle Al installer that comes with Oracle: it is not clean, not complete, and there are some residual registries, which will affect subsequent installation. Therefore, we recommend that you manually
SQL ServerAndOracleThe database has an important difference when setting the primary key of a table,SQL ServerYou can set the primary key of a table through the self-incrementing data type.OracleThe sequence in the database must be used to implement
Today I made a smallProgram"Oracle. dataaccess, version = 4.112.2.0, culture = neutral, publickeytoken = 89b483f429c47342 "or one of its dependencies. Error message for trying to load programs with incorrect format! At that time, the first response
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