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Top Forums UNIX for Advanced & Expert Users Perl-to-Oracle performance: DBI-pack visa 'sqlplus' usage Post 302371454 by matrixmadhan on Saturday 14th of November 2009 11:17:28 PM
Old 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 ! Smilie

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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OCI_SET_ACTION(3)														 OCI_SET_ACTION(3)

oci_set_action - Sets the action name

SYNOPSIS
bool oci_set_action (resource $connection, string $action_name) DESCRIPTION
Sets the action name for Oracle tracing. The action name is registered with the database when the next 'roundtrip' from PHP to the database occurs, typically when an SQL statement is executed. The action name can subsequently be queried from database administration views such as V$SESSION. It can be used for tracing and monitor- ing such as with V$SQLAREA and DBMS_MONITOR.SERV_MOD_ACT_STAT_ENABLE. The value may be retained across persistent connections. PARAMETERS
o $connection -An Oracle connection identifier, returned by oci_connect(3), oci_pconnect(3), or oci_new_connect(3). o $action_name - User chosen string up to 32 bytes long. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Setting the action <?php $c = oci_connect('hr', 'welcome', 'localhost/XE'); // Record the action oci_set_action($c, 'Friend Lookup'); // Code that causes a roundtrip, for example a query: $s = oci_parse($c, 'select * from dual'); oci_execute($s); oci_fetch_all($s, $res); sleep(30); ?> // While the script is running, the administrator can see the actions // being performed: sqlplus system/welcome SQL> select action from v$session; NOTES
Note Oracle version requirement This function is available when PHP is linked with Oracle Database libraries from version 10 g onwards. Tip Performance With older versions of OCI8 or the Oracle Database, the client information can be set using the Oracle DBMS_APPLICATION_INFO pack- age. This is less efficient than using oci_set_client_info(3). Caution Roundtrip Gotcha Some but not all OCI8 functions cause roundtrips. Roundtrips to the database may not occur with queries when result caching is enabled. SEE ALSO
oci_set_module_name(3), oci_set_client_info(3), oci_set_client_identifier(3). PHP Documentation Group OCI_SET_ACTION(3)
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