How do I change a table from read only?

How do I change a table from read only?

Oracle 11g allows tables to be marked as read-only using the ALTER TABLE command. alter table table_name read only; alter table table_name read write; The following script creates a table, inserts a row, then sets the table to read-only.

How can you tell if a table is read only?

To identify if a table is read-only, a new column called READ_ONLY has been added to DBA_TABLES, USER_TABLES, and ALL_TABLES. This column is set to YES if the table is read-only and NO when the table is not read-only.

How do I create a readonly table in Oracle?

Oracle 11g allows tables to be marked as read-only using the ALTER TABLE command. ALTER TABLE table_name READ ONLY; ALTER TABLE table_name READ WRITE; Let’s create a table and make it read-only.

How do you change a database from readonly to read in Oracle?

read only and read write are modifiers of the alter database OPEN clause. since an instance may mount and open only one database (you have to “kill it” and create a new instance – set of processes plus memory), you have to in effect shutdown and restart the instance to go from read only to read write or vice versa.

Why is my SQL table read only?

You should at least have the necessary privileges on your specific table. If that’s the case, try to repair the table (it may have crashed). If you’re still getting “read only” messages, check the file permissions in /var/lib/mysql/dbname/tbl_name (assuming your database is in /var/lib/mysql).

How do I open a standby database in read only mode?

To open a standby database for read-only access when it is currently shut down:

1. Start the Oracle instance for the standby database without mounting it: SQL> STARTUP NOMOUNT;
2. Mount the standby database: SQL> ALTER DATABASE MOUNT STANDBY DATABASE;
3. Open the database for read-only access: SQL> ALTER DATABASE OPEN READ ONLY;

How can I tell if tablespace is read only mode?

Oracle read-only table tips

1. alter tablespace tab_ts read only. In 11g, you can mark the table as read-only to prevent updates during an index drop:
2. alter table mytab read only. You can verify that the table is read-only with this command:
3. select. table_name, read_only. from. dba_tables. where. owner =? myowner?

How do you change a database from readonly to read?

Follow this simple steps and mark your database “read-write”.

1. Right-click database you need to mark as read-write.
2. Select “Properties”
3. In the “Database Properties” window select “Options” tab.
4. Scroll down and find “State” tab, go to “Database Read-Only” statement and select “False”

What is alter database open?

Opening a Closed Database To open a mounted database, use the ALTER DATABASE statement with the OPEN clause: ALTER DATABASE OPEN; After executing this statement, any valid Oracle Database user with the CREATE SESSION system privilege can connect to the database.

How do I change a MySQL table from read only?

right-click on a table within the Object Browser and choose the Edit Table Data option from there. Hovering over the icon “read only” in mysql workbench shows a tooltip that explains why it cannot be edited.

What does flush tables with read lock do?

FLUSH TABLES WITH READ LOCK is useful if you want to take a backup of some tables. When FLUSH TABLES WITH READ LOCK returns, all write access to tables are blocked and all tables are marked as ‘properly closed’ on disk. The tables can still be used for read operations.

How do I change my standby read only database online?

Steps to change restore mode of secondary database in SQL Server Log Shipping

1. Check the current SQL Server database state.
2. Check the Current SQL Server Log Shipping Mode.
3. Change a SQL Server Log Shipping Database to Read-Only.
4. Check the SQL Server Log Shipping Change.
5. Run SQL Server Log Shipping Restore.

How to set ALTER TABLE to read only?

Oracle Database 11g introduces new ALTER TABLE syntax. For example, a table can be set to read-only by issuing the following command: ALTER TABLE READ ONLY; A table can be returned to read and write using the following command:

How to make a table read only in Oracle 11g?

Oracle 11g allows tables to be marked as read-only using the ALTER TABLE command. alter table table_name read only; alter table table_name read write; The following script creates a table, inserts a row, then sets the table to read-only.

Why is alter tablespace not read only in Oracle?

ALTER TABLESPACE. For this reason, the SYSTEM tablespace can never be made read only, because it contains the SYSTEM rollback segment. Additionally, because the rollback segments of a read-only tablespace are not accessible, Oracle recommends that you drop the rollback segments before you make a tablespace read only.

Where can I find the read only status of a table?

A table’s read-only status is available from the read_only column of the dictionary views for [user|all|dba]_tables. For example: 7 table_name = ‘ACCOUNT_SALES_OCTOBER2007’; Any attempts to insert, delete, or update the data from this table while it is in read-only status results in the following error: