11-15-2009
Quote:
Just a general hint: Thy to avoid using shell + sqlplus if you are dealing with a large number of data and complex logic.
Great hint !
Generally for bulk loading I dont prefer a shell invoking a client to do that, instead establish a connection ( specific connection_id is returned ) to the database. Since you are using perl to do that, interfaces are very much available to connect to oracle database.
Also, the commit after number of records plays a vital and role, that should be determined before.
1) Few number of records and a commit after that will bring down the performance
2) Too many records and a commit - possibility of filling the redo log buffer, corruption of buffer and if operation should fail the retry logic should work out on all the records again
As requested earlier by adderek, please post some stats that you are trying to load
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LEARN ABOUT DEBIAN
jifty::dbi::handle::oracle
Jifty::DBI::Handle::Oracle(3pm) User Contributed Perl Documentation Jifty::DBI::Handle::Oracle(3pm)
NAME
Jifty::DBI::Handle::Oracle - An oracle specific Handle object
SYNOPSIS
DESCRIPTION
This module provides a subclass of Jifty::DBI::Handle that compensates for some of the idiosyncrasies of Oracle.
METHODS
connect PARAMHASH: Driver, Database, Host, User, Password
Takes a paramhash and connects to your DBI datasource.
database_version
Returns value of ORA_OCI constant, see "Constants" in DBD::Oracle.
insert
Takes a table name as the first argument and assumes that the rest of the arguments are an array of key-value pairs to be inserted.
build_dsn PARAMHASH
Takes a bunch of parameters:
Required: Driver, Database or Host/SID, Optional: Port and RequireSSL
Builds a dsn suitable for an Oracle DBI connection
blob_params column_NAME column_type
Returns a hash ref for the bind_param call to identify BLOB types used by the current database for a particular column type. The current
Oracle implementation only supports ORA_CLOB types(112).
apply_limits STATEMENTREF ROWS_PER_PAGE FIRST_ROW
takes an SQL SELECT statement and massages it to return ROWS_PER_PAGE starting with FIRST_ROW;
distinct_query STATEMENTREF
takes an incomplete SQL SELECT statement and massages it to return a DISTINCT result set.
AUTHOR
Jesse Vincent, jesse@fsck.com
SEE ALSO
Jifty::DBI, Jifty::DBI::Handle, DBD::Oracle
perl v5.14.2 2011-04-26 Jifty::DBI::Handle::Oracle(3pm)