IBM TDS/SDS (LDAP) - can I mix endianness among servers in an instance ? Post: 303039487

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Operating Systems AIX IBM TDS/SDS (LDAP) - can I mix endianness among servers in an instance ? Post 303039487 by maraixadm on Monday 7th of October 2019 06:07:12 PM

10-07-2019

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IBM TDS/SDS (LDAP) - can I mix endianness among servers in an instance ?

I'd like to add some x/linux-based servers to my current AIX-based TDS/SDS server community. Reading the Fine Install Guide (rtfig ?) I believe this may be covered by the section "Upgrade an instance of a previous version to a different computer" i.e. I'm going to install latest/greatest SDS on a new server image, then bring in the instance data from one of my current servers.

The chart in that section of the Install Guide indicates this is only possible among systems with the same endianness.

Is it possible to have Intel & power servers cooperating on the same directory ? If so, can someone pls point me to doc on how to get there ?

Much appreciated !

[edit:] more reading. I see in the section "creating a copy of an existing instance" the same requirement that only data from a source with the same endianness as the target can be used.

So: can I create an instance copy without data, then (quiesce replication and suspend my servers and) dump the directory to an LDIF, and load the new instance from that instead of from a backup ? Then ensuring that replication is prepared on the new copy and then spinning up the whole pile ? The crux being that by importing the data as text rather than binary, I avoid the fact that handling of endianness/network byte order is missing from the deploy tools ?

Same question as above though, crudely, does replication handle network byte order correctly and swap data nice between different endiannesses ?

Last edited by maraixadm; 10-08-2019 at 12:28 AM..

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LEARN ABOUT DEBIAN

datacopy

datacopy(1)							 FreeTDS Utilities						       datacopy(1)

NAME

       datacopy - move table data between two servers

SYNOPSIS

       datacopy { -t | -a | -c owner } [-b batchsize] [-p packetsize] [-v] [-d]
		[-S server/username/password/database/table_or_view]
		[-D server/username/password/database/table]

DESCRIPTION

       datacopy is a utility distributed with FreeTDS.	datacopy will move table data from one server to another without the need for intermediate
       files. datacopy is much faster and more efficient than is freebcp out/in.

       datacopy makes use of the db-lib bcp API built into FreeTDS. This API is also available to application developers.

       datacopy can be used to migrate data between Sybase ASE and SQL Server or vice versa.

OPTIONS

       -t     Truncate target table before loading data.

       -a     Append data to target table.

       -c owner
	      Create the target table with the same schema as the source table. datacopy will submit  a  'create  table'  command  on  the  target
	      server/database using the specified owner in

	      the command, e.g. CREATE TABLE owner.table (...).

       -b batchsize
	      The number of rows per batch of data copied.  Each batch of data is effectively 'committed' to the database. The default is 1000.

       -p packetsize
	      The number of bytes, per network packet, sent to and from the servers. Increased packet size can enhance performance.

       -v     Produce verbose output, including diagnostic timings.

       -d     Produce freetds TDSDUMP output. (Serious debug only!)

       -S server/username/password/database/table_or_view
	      The connection information for the source server and the location/name of the table (or view) to be copied.  If not specified, data-
	      copy will prompt the user for the information.

       -D server/username/password/database/table
	      The connection information for the destination server and the location/name of the target table.	If not	specified,  datacopy  will
	      prompt the user for the information.

SEE ALSO

       freebcp(1), defncopy(1), bsqldb(1), tsql(1), FreeTDS User Guide.

HISTORY

       datacopy first appeared in FreeTDS 0.64.

AUTHORS

       The datacopy utility was written by Bill Thompson (thompbil@exchange.uk.ml.com).

doc								 13 November 2011						       datacopy(1)