In the OracleRAC environment, run asmcmd with the grid account to enter the asm command mode, such as: [grid @ oradb-node1 ~] $ AsmcmdASMCMDgt; ASMCMD
In the Oracle RAC environment, use the grid account to run asmcmd to enter the asm command mode,
Unless you have sysdba permissions, you can only view your own objects. Therefore, for users, it seems that everyone has their own recycle bin. Even if the user deletes other
Unless you have sysdba permissions, you can only view your own objects.
In versions earlier than OracleDatabase11g, I must capture all SQL statements, run these statements by tracking them, and then get the execution plan mdash; this is an excellent
In versions earlier than Oracle Database 11g, I must capture all SQL
Sqlldr is a recommended method for processing large data volumes. It has many performance switches to minimize redo, undo generation, and control data processing methods.
Sqlldr is a recommended method for processing large data volumes. It has many
OracleNet is an indispensable component in the process of using Oracle. For beginners, the three configuration files tnsname. ora, listener. ora, and sqlnet. ora are the most
Oracle Net is an indispensable component in the process of using Oracle.
During the historical data transfer-out test, through continuous optimization, including SQL adjustment and database adjustment, we can see from AWR that it is basically difficult to improve performance, so we are ready to try it.
During the
Recently, I received a system and went online for more than one year. During the handover, the business department reported that the disk space was full. At that time, the whole system was paralyzed and finally contacted the developer
Recently, I
Configure a StreamingReplication cluster in PostgreSQL
Configure a Streaming Replication cluster in PostgreSQL
2. Install PostgreSQL
1) install PostgreSQL software on the Primary and Standy nodes, installation path is/opt/pgsql-9.1.2
2) Set
With the continuous development and increase of the technical environment, the O & M department is facing two trends: large-scale and complex. One or two O & M personnel manage hundreds of servers in the company
With the continuous development and
OracleVault is an important part of the three security technologies. Compared with the other two types, LabelSecurity, VPD (VirtualPrivateDatabase), and OracleVa
Oracle Vault is an important part of the three security technologies. Compared with the
Run the stored procedure, which contains a temporary table. After running, I plan to delete the temporary table report ORA-14452: Anattemptwasmadetocreate, alterordropanindexonte
Run the stored procedure, which contains a temporary table. After
Under normal circumstances when reporting ORA-00054, it is likely that there is an object is locked, this error is generally ldquo; resources are busy, but specify to get resources in NOWAIT mode, or super
Under normal circumstances when reporting
When installing the oracle database software, we have flashrecoveryarea. If we do not select this option, the quick recovery area is disabled.
When installing the oracle database software, we have a flash recovery area option. If we do not select
In many scenarios, developers often use the millisecond value from 1970-01-0100:00:00. 000 to indicate the specific time, so that data can be stored in the database as NUMBER.
In many scenarios, developers are used to express the specific time in
Case study of OracleStudy-system architecture for transferring tablespaces (from Linux to AIX) on Heterogeneous Platforms: source database & nbsp ..
Case study of OracleStudy-system architecture for transferring tablespaces (from Linux to AIX) on
After the server is restarted -- restart the Application Service (Confluence) -- an error is reported, indicating that the database connection fails (mysql is set to start automatically after startup) -- view the mysql database status: [root @
In some cases, you can only use a remote MongoDB instance instead of logging on to the server where the MongoDB instance is located. In this case, you can maintain the host and port list of a remote MongoDB instance on one server, then use z
In some
For details about NULL values in Oracle, NULL indicates UNKNOW (unknown) and does not represent any value. For example, if a column in a row does not have any value, it is NULL.
For details about NULL values in Oracle, NULL indicates UNKNOW (unknown)
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