Most Collector parameters are entered in the Extract parameter file, using the PARAMS
collector_params
option of the RMTHOST
parameter. The Manager automatically sends some of these parameters when it starts the Collector, such as -k and ENCRYPT
key and KEYNAME
options entered by the user.
The Collector parameters discussed here are for a Collector running on a remote NonStop system. For Collector parameters that run on other platforms, see Collector Parameters.
PROCESS
process_name
The name of the NonStop TCP/IP process.
-BULKIO
Results in Collector writing data in 28K blocks, rather than 4K. Setting -BULKIO
can increase total throughput of the Collector and reduce overhead significantly.
-BULKIOLEN
Use BULKIOLEN
to customize the block size Collector should use when writing data. Increasing the block size used by Collector can contribute a net performance gain by increasing total throughput. Block sizes may be indicated in bytes or kilobytes, but the Collector only recognize sizes that are multiples of 2. If you choose a block size between 2 and the next multiple, BULKIOLEN
automatically rounds your specification down.
b
backup_cpu
Runs the Collector backup process started in backup_cpu
. This option is only for static servers. It is not valid for dynamic servers, which are persistent processes that will be restarted if the process has a failure.
-B
-DEBUG
Starts the Collector in DEBUG
mode to allow the user to analyze the actions of the program code.
-EMSEMPHASIS
type
Controls whether or not emphasis will be turned on for certain types of messages coming from EMSCLNT on open systems.
type
can be one of the following:
CRITICAL
Turns emphasis on for CRITICAL
or WARNING
messages as well as FATAL
messages.
FATAL
or ERROR
Turns emphasis on only for FATAL
messages.
The default is CRITICAL.
ENCRYPT
encrypt_type
The type of encryption being passed from the Extract process, as specified with the RMTHOST
parameter in the Extract parameter file.
Valid values:
GGS
BLOWFISH
If using BLOWFISH
, also specify the -KEYNAME
option. For more information about Oracle GoldenGate security, see Using Encryption.
-f
Always forces file writes to be flushed to disk before returning a success status to the Extract process.
By default, the file system buffers the I/O because it is more efficient than flushing to disk with every operation. Generally, the performance benefits outweigh the small risk that data could be lost if the system fails after an I/O is confirmed successful, but before the buffer actually is flushed to disk. Use -f
if this risk is unacceptable, with the understanding that it can compromise the performance of Oracle GoldenGate.
HOMETERM
terminal
Identifies the home terminal for the Collector.
-k
Directs Collector to terminate when the Extract process that it is serving disconnects. This option is used by the Manager process when starting the Collector process.
KEYNAME
name
Specifies a key name defined in the local ENCKEYS
lookup file. name
is the name of a key in a lookup file on the target system. For more information about Oracle GoldenGate security, see Using Encryption.
l
file_name
Directs the Collector to log to file_name
. The name should be fully qualified.
-m
number
Specifies the maximum number of files to allocate.
NOFLUSHCACHE
| FLUSHCACHE
Turns on or off the flushing of the disk cache.
-p
port_number
A TCP/IP port number on which the Collector listens for connections from the Extract process. The default is port 7819
.
-t
Turns on TCP tracing to write detail to EMS on socket operations. It is recommended that you use this parameter only when requested by Oracle GoldenGate Support.
-TCPSTATS
Specifies that TCP statistics should be printed at file rollover.
-v
Specifies that NonStop Collector processes use EMS logging.