If table is highly volatile then locking the statistics prevent in execution plan from changing and thus helps in plan stability for some period of time. That is why many guys prefer to unlock the stats, gather
You misunderstood the meaning of read and write lock. You are creating your own definition of the lock. Read lock (shared lock) everybody can read, nobody can write Write lock (exclusive lock) only 1 user can read and write, everyone else cannot...
In certain cases you may want to lock statistics in a table in certain cases, for example if you want a table not be analyzed by automatic statistics job but analyze it later or in cases where you want prevent from analyzing statistics in cases where data in the table doesn’t change. T...
Posted in ORACLETagged advantages of global temporary table in oracle, alter global temporary table, delete global temporary table in oracle, how to check global temporary table in oracle, how to drop global temporary table in oracle, ora-14452 drop global temporary table, ora-14452 while ...
"Recursive write lock acquisitions not allowed in this mode.? "Settings" in DLL project properties and app.config file "The function evaluation requires all threads to run" while accessing music library through wmp.dll "The left-hand side of an assignment must be a variable, property or index...
Summary: in this tutorial, you will learn how to use the OracleGRANT ALL PRIVILEGESstatement to grant all privileges to a user. Granting all privileges to a new user# First,create a new usercalledsuperwith a password by using the followingCREATE USERstatement: ...
More importantly, the lines beginning “RECORD LOCKS space id 0” show which index of which table was locked. That is the real meat of the matter—that’s what you need to know. There’s just one problem: after there’s been a deadlock, it’s too late. You don’t want to know ...
to perform a programmatic login. If this login fails multiple times, WebLogic runtime will soft lock this account, making the situation worse for this scheduled service: it can't login even if the reason for login failure is gone. The only way out would be to manually stop the service ...
accessing other tables. In that way, all transactions happen in a serial fashion. Note that theInnoDBinstant deadlock detection algorithm also works in this case, because the serializing lock is a row-level lock. With MySQL table-level locks, the timeout method must be used to resolve ...
LOCK TABLES t1 WRITE, t2 READ, ...; ... do something with tables t1 and t2 here ... COMMIT; UNLOCK TABLES; What will happen if the system crash between the LOCK AND the UNLOCK? Am I forced to restart the database? Now, what I'm doing is catch an exception in Php in order ...