ORA-27101: Shared Memory realm does not exist
The machine is a common HP household machine, and the driver is not very good for XP, but no error is reported in the Device Manager. Used for testing the upgrading of the unit server. Install the Win200
Detailed explanation of the Oracle database SCN Number: System checkpoint SCN (V $ database (checkpoint_change #))
Data File checkpoint (V $ datafile (checkpoint_change #))
Data File termination SCN (V $ datafile (last_change #))
Checkpoints
When oracle is commonly used, it will be uninstalled:
Write down the steps yourself:
Disable all Oracle services andProgram Select Start | program | Oracle Installation products command to run universal Installer. The welcome dialog box is
Problem:
ORA-04063: ORA-04063: Package body "XX. YY" has errorsORA-06508: PL/SQL: cocould not find Program unit being called: "XX. YY"
Processing Process:
1. Re-compile the "XX" package in PL/SQL developer and find no problems;
2. Execute
Manage permissions and Roles
How Does Oracle manage permissions and roles? What is the difference between permissions and roles?
When a user is created, the user does not have any permissions and cannot perform any operations. If you want to perform
Oracle Delete serialization:
Drop sequence seq_itv_collection;
Create serialization in Oracle:
Create sequence seq_itv_collectionIncrement by 1 -- add severalStart with 1399 -- count from 1Nomaxvalue -- do not set the maximum valueNocycle -- always
Generally, the primary key of a table is necessary. A table without a primary key does not comply with the design specifications.Select table_name from user_tables t where not exists(Select table_name from user_constraints c Where constraint_type = '
Steps:1. Export data files from MySQL Select sender, imsi, random_code, date_format (token_create_time, '% Y % m % d % H % I % s'), date_format (last_login_time, '% Y % m % d % H % I % s'), 1 as statusFrom tb_sms_token where last_login_time is not
I. Main Content
There are many factors that affect the performance of ArcSDE, but in the final analysis, there are two aspects: the configuration of Oracle and ArcSDE in the background. Oracle not only includes database component size definition,
Oracle provides two types {Tagshow (event, 'SQL ');} "Href =" http://www.cnblogs.com/sopost/admin/javascript:; "target =" _ Self ">SQLOptimizer. CBO was introduced in oracle7, but it was only mature in Oracle8i. Oracle has clearly stated that in
All versions of Oracle 9i/10gr2 (Please download them with download tools such as thunder ):
Bytes ---------------------------------------------------------------------------------------------------Oracle 9i
Oracle9i Database Release 2
1. log on to 9.2.0.1 as sysdba and delete public synonym xmlconcat & function xmlconcat
C:> sqlplus/nolog
SQL> connect/As sysdba
SQL> drop public synonym xmlconcat;
SQL> drop function xmlconcat;
2. Shut down normally and stop all Oracle
1. Go to the Oracle official website (34,469,920 bytes)
2. decompress the package to the C: \ clientlient Directory, which includes the following files:
Classes12.jar
Ocijdbc10.dll
Ojdbc14.jar
Oraocci10.dll
OCI.
In order to solve the memory leakage, the patch has been upgraded many times in the past few months, but it has failed many times, but it has finally been solved. In fact, the upgrade fails because some files are being used by other programs. The
1. Remove the HBA fiber of rac2, interrupt rac2 and storage cabinet, and find that rac2 reboot and Rac1 work normally.
[Oracle @ racdb01 ~] $ Crs_stat-TOra. RAC. DB application online racdb01Ora... s1.inst application online racdb01Ora... s2.inst
I have prepared a datafile mobile article. For details, refer:
How to operate Oracle mobile data files
Http://blog.csdn.net/tianlesoftware/article/details/4899172
To ensure data consistency, offline is selected or the DB is started to the Mount
Run the dbca command on a set of DB servers and report the following error:
[Oracle @ game_db ~] $ Dbca
Exception in thread "Main"
[Oracle @ game_db ~] $
[Oracle @ game_db ~] $ Exportdisplay = 1921.68.3.189: 0.0
[Oracle @ game_db ~] $
When you use set autotrace or explain Plan for to generate an execution plan, the following message is displayed:
Note
------'Plan _ table' is old version
The cause of this error is that the execution plan of Toad has been analyzed. Therefore,
Why use?
1. If you need to apply the same query multiple times in a complex query, use with to implement code reuse;
2. With query is similar to retaining the query results to the user's temporary table. Io can be reduced in large and complex
Put the Escape Character (^) out of square brackets ([]) to match strings starting with any character in square brackets;
Put the Escape Character (^) in square brackets ([]) to match strings containing any characters not in square brackets.
SQL>
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