Interested to Buy Any Domain ? << Click Here >> for more details...
In BIND, isolation level parameter specifies the duration
of page lock and ACQUIRE, RELEASE also do almost the same
thing. What is the exact difference between the two? Do
they work in conjunction while executing SQL queries and
obtaining locks?
- 8 Answers
- 18981 Views
- Syntel, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / neeti
Isolation level parameters are used on page level while the
ACQUIRE and RELEASE parameters work on tablespace levels
| Is This Answer Correct ? | 8 Yes | 3 No |
Answer / p praveen kumar
1) Isolation specifies types of locks to be used by
Repeatable Reads(Table space locks), Reads
Stability(page level locks), Cursor Stability(Row level Locks)
Uncommitted locks(no Locks)
2) Acquire tells when the lock should be acquired(USE,ALLOCATE)
3) Release tells when it should be unlocked(COMMIT, DEAL LOCATE)
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / guest
ACQUIRE, RELEASE determines when a partition, table or
tablespace lock will be acquired and released. ISOLATION
determines when a row, page lock will be acquired and
released. PAGE, ROW locks are released depending on the
ISOLATION level but almost always at commit or rollback.
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / priya
When a tablespace is locked, another task cannot have
access to the entire table itself. So here, does page level
locking matter and what difference remains between
ISOLATION and ACQUIRE/RELEASE?
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / rrgust
In ACQUIRE there are two options are available 1) Use
2)Allocate. When the bind card contains ACQUIRE(USE) when
there there is first hit to the table, lock willbe held. If
you use the second option, during the executin the lock
will be held.
Reg: RELEASE, it will take RELEASE(COMMIT). Once commit is
perfomed, the lock will be released..
| Is This Answer Correct ? | 3 Yes | 3 No |
Answer / g
ACQUIRE, RELEASE parameters refer to when the resources for
the application program will be acquired and released. This
includes when datasets will be allocated/deallocated, when
storage will be allocated/deallocated for DBDs,
plans/packages in EDM pool.
| Is This Answer Correct ? | 2 Yes | 2 No |
Answer / madhu
1) Acquire and Release are effective when lock rule of tablespace is either table lock or tablespace lock. In this case, bind level isolation has no effect.
2) Isolation Level is effective when lock rule of tablespace is either page lock or row lock. In this case, Acquire and Release has no effect.
| Is This Answer Correct ? | 0 Yes | 0 No |
Are views updateable?
What is the specific need of Plan and..where are the tables in DB2 are physically saved
What information is held in SYSIBM.SYSCOPY?
Can you use max on a char column?
What is cursor stability?
What is a data page?
What is cursor in dbms?
Could you please let me no the query for below I have table name xyx under this there is column name called employee name which starts from 100th column ends 120th column,now i want to replace only column from 101 to 104 which contains ABCS to replace with PQRS for all records which comes beetween 101 to 104 ..how to write query for this..
What is syscat in db2?
How do I create a view in db2?
Why do we need to create an alias if we can directly use the table name? What are the benefits of referring a table name by its alias? Also, when should we go for alias and when for synonyms?
Suppose there are many duplicate records in a Db2 table. What is the query to retrive only duplicate records?
COBOL 
