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Top Forums Shell Programming and Scripting Calling SQL LDR and SQL plus scripts in a shell script Post 302143943 by rajagavini on Monday 5th of November 2007 01:05:23 PM
Old 11-05-2007
Calling SQL LDR and SQL plus scripts in a shell script

Hi-
I am trying to achieve the following in a script so I can schedule it on a cron job. I am fairly new to the unix environment...

I have written a shell script that reads a flat file and loads the data into an Oracle table (Table1) via SQLLDR. This Works fine. Then, I run a nested insert statement to parse through the records in Table1 and load the necessary results into a Table. (Table2). This works fine too.

Here is how my script looks like...

# Always truncate table 1 before loading data.
print "truncate table table1;" | sqlplus -s userid/password@db>$now.log
sqlldr userid/password@db control=dbload.ctl>>$now.log
# Always truncate table 2 before loading data.
print "truncate table table2;" | sqlplus -s userid/password@db>>$now.log
# Parse through Table1 and load only necessary records to Table2.
print "insert into table2 select id, min(STARTDATE) as startdate from table1 group by id, to_char(STARTDATE,'mm/dd/yyyy');" | sqlplus -s userid/password@db>>$now.log

I call this script myscript.sh, which will be run via crontab every 15 mins.

Here are my questions:
1) Note how I establish a database connection to execute every sql I need to run? I am thinking there should be an easy way to this. I looked into the "here documents" but not sure how I can use them above. Do I really need to use the "here document" or is my script good the way as it is now?
Would it open and close the db connections for each sql correctly?

If I do use the "here document", do I need to have one for the sqlldr and the other for all the sqlplus part?

Please advise best way to go ahead.
Thanks
RG
 

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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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