hi, i read from some of the post that if i want to delete a whole
table using sql, i can use empty option to delete all the records but
keep the table definition, how to do that? the reason i want this
because i will get log full error for delete many records before
commit. instead of increase the log file size, i would like to know
other option like it mentioned above. 6 5511
There are two ways to do this in DB2. A fast way is IMPORT REPLACE with
a delimited file that contains no rows:
import from c:\ixf\rep.del of del replace into testvar
IMPORT is usually the best choice, because it does not lock the table
space. If the table has many active pages in the bufferpool, LOAD will
be faster, as IMPORT will flush the bufferpool. LOAD must be used if the
target table has Referential Integrity dependencies or summary tables
defined on it.
xixi wrote: hi, i read from some of the post that if i want to delete a whole table using sql, i can use empty option to delete all the records but keep the table definition, how to do that? the reason i want this because i will get log full error for delete many records before commit. instead of increase the log file size, i would like to know other option like it mentioned above.
There are two ways to do this in DB2. A fast way is IMPORT REPLACE with
a delimited file that contains no rows:
import from c:\ixf\rep.del of del replace into testvar
IMPORT is usually the best choice, because it does not lock the table
space. If the table has many active pages in the bufferpool, LOAD will
be faster, as IMPORT will flush the bufferpool. LOAD must be used if the
target table has Referential Integrity dependencies or summary tables
defined on it.
xixi wrote: hi, i read from some of the post that if i want to delete a whole table using sql, i can use empty option to delete all the records but keep the table definition, how to do that? the reason i want this because i will get log full error for delete many records before commit. instead of increase the log file size, i would like to know other option like it mentioned above.
Blair Adamache wrote: There are two ways to do this in DB2. A fast way is IMPORT REPLACE with a delimited file that contains no rows:
import from c:\ixf\rep.del of del replace into testvar
IMPORT is usually the best choice, because it does not lock the table space. If the table has many active pages in the bufferpool, LOAD will be faster, as IMPORT will flush the bufferpool. LOAD must be used if the target table has Referential Integrity dependencies or summary tables defined on it.
There is also an article that describes how to make the TRUNCATE operation
(via IMPORT ... REPLACE) available in SQL through a stored procedure: http://www-106.ibm.com/developerwork...ein/index.html
--
Knut Stolze
Information Integration
IBM Germany / University of Jena
Blair Adamache wrote: There are two ways to do this in DB2. A fast way is IMPORT REPLACE with a delimited file that contains no rows:
import from c:\ixf\rep.del of del replace into testvar
IMPORT is usually the best choice, because it does not lock the table space. If the table has many active pages in the bufferpool, LOAD will be faster, as IMPORT will flush the bufferpool. LOAD must be used if the target table has Referential Integrity dependencies or summary tables defined on it.
There is also an article that describes how to make the TRUNCATE operation
(via IMPORT ... REPLACE) available in SQL through a stored procedure: http://www-106.ibm.com/developerwork...ein/index.html
--
Knut Stolze
Information Integration
IBM Germany / University of Jena
xixi wrote: hi, i read from some of the post that if i want to delete a whole table using sql, i can use empty option to delete all the records but keep the table definition, how to do that? the reason i want this because i will get log full error for delete many records before commit. instead of increase the log file size, i would like to know other option like it mentioned above.
You can also :
alter table x not logged initially with empty table
If the table was created with the 'not logged initially' option.
Ian
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xixi wrote: hi, i read from some of the post that if i want to delete a whole table using sql, i can use empty option to delete all the records but keep the table definition, how to do that? the reason i want this because i will get log full error for delete many records before commit. instead of increase the log file size, i would like to know other option like it mentioned above.
You can also :
alter table x not logged initially with empty table
If the table was created with the 'not logged initially' option.
Ian
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-----== Over 100,000 Newsgroups - 19 Different Servers! =----- This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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