SELECT /* all_rows ordered dynamic_sampling(2) */ A.rowid,:1,:2,:3 from "<user_name>"."" A WHERE ( "<COL1>" is NULL) this query is running without parallelism You specifically run ALTER SESSION FORCE PARALLEL DML PARALLEL 8 / ALTER SESSION FORCE PARALLEL QUERY PARALLEL 8 / ALTER...
You can specify NULL in ALTER COLUMN to force a NOT NULL column to allow null values, except for columns in PRIMARY KEY constraints. You can specify NOT NULL in ALTER COLUMN only if the column contains no null values. The null values must be updated to some value before the ALTER COLUMN...
8 Parameter class Dynamic: ALTER SESSION, ALTER SYSTEM Range of values Operating system-dependent DB_FILE_MULTIBLOCK_READ_COUNT is one of the parameters you can use to minimize I/O during table scans. It specifies the maximum number of blocks read in one I/O operation during a sequen...
I can enable following in SE 11g R2, is it available in SE but not intended to use anyone knows about it ALTER SESSION FORCE PARALLEL DML/DDL/QUERY are available feature in Oracle Standard Edition 11g R2?
Allows setting the autodrop functionality forglobal temporary tables. The default isON, which means that the global temporary tables are automatically dropped when not in use by any session or task. When set toOFF, global temporary tables can only be explicitly dropped using aDROP TABLEstatement ...
You cannot specify bothTIMEOUTandDISCONNECT[FROMSESSION].TIMEOUTapplies only to foreground recovery operations, whereas theDISCONNECTclause initiates background recovery operations. TIMEOUTinteger Specify in minutes the wait period of the managed recovery operation. The recovery process waits forintegerminutes...
EVENT SESSION EXTERNAL DATA SOURCE EXTERNAL LANGUAGE EXTERNAL LIBRARY EXTERNAL RESOURCE POOL FULLTEXT CATALOG FULLTEXT INDEX FULLTEXT STOPLIST FUNCTION INDEX INDEX (Selective XML Indexes) LOGIN MASTER KEY MESSAGE TYPE PARTITION FUNCTION PARTITION SCHEME ...
1: Suppresses parallel plan generation. >1: Restricts the maximum number of processors used in a parallel index operation to the specified number. 0(default): Uses the actual number of processors or fewer based on the current system workload. ...
To pause immediately the index operation, you can stop the ongoing command (Ctrl-C) or you can execute the ALTER INDEX PAUSE command or the KILL <session_id> command. Once the command is paused, it can be resumed using RESUME option. The ABORT command kills the session that hosted the ...
When you create or alter a table with the CREATE TABLE or ALTER TABLE statements, the database and session settings influence and possibly override the nullability of the data type that's used in a column definition. Be sure that you always explicitly define a column as NULL or NOT NULL fo...