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Full Discussion: How to lock Oracle table through UNIX?
Top Forums Shell Programming and Scripting How to lock Oracle table through UNIX? Post 302863691 by gnnsprapa on Tuesday 15th of October 2013 03:34:35 AM
Old 10-15-2013
Hi,

i guess i couldnt explain correctly..please ignore my previous post my actual req is as below mentioned..



load_cdr-->main script
Source Feeds are A & B.
File in A-akm.dat
File in B-bkm.dat
Now my script runs through cron jobs everyday...and for both A&B it runs parllely...i.e script will start loading data from akm also and bkm also...prob is these two files try to update same table at some point and gives an error.

for eg: i use one script named as daily.sh which consist of commands which start my script

Code:
nohup opt/app/dev/scripts/load_cdr.sh A > opt/app/dev/logs &
nohup opt/app/dev/scripts/load_cdr.sh B > opt/app/dev/logs &

I cannot go with an option where i run my script sequentially for each source Feeds. So need smthing like sleep command usage ..

**when ever any feed's file start loading it creates some lock file..
eg: if akm.dat dile of source feed A is getting loaded in temp dir A.lck file gets created and similarly for B feed also..

Now i want that my script should check if A.lck file exist in that folder and if it is present and B feed try to load then script loading B feed should go into sleep mode and check in every 5 min if A.lck file got removed or not..once it got removed B file starts loading

It might be bit confusing ..so please let me knw if i missed ny pt.

TIA
 

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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)
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