error in RMAN script

I am using the below script for RMAN archivrlog backup. I am getting the eror.
Please suggest me on it.

run {
allocate channel ch1 type 'sbt_tape'
PARMS="BLKSIZE=262144,ENV=(CV_mmsApiVsn=2,CV_channelPar=ch1)"
TRACE 0;
setlimit channel ch1 maxopenfiles 8;
backup archivelog all delete input ;
backup current controlfile;
RELEASE CHANNEL ch1;
}2> 3> 4> 5> 6> 7> 8> 9>

RMAN-03022: compiling command: allocate
RMAN-03026: error recovery releasing channel resources
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure during compilation of command
RMAN-03013: command type: allocate
RMAN-06172: not connected to recovery catalog database
dba1234Asked:
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BajwaCommented:
You are not connected to recovery catalog (if you have)  The syntax to run the RMan command is

if no recovery catalog then logon to the machine which runs the database as that user.

rman target /

If using recovery catalog then

rman TARGET / CATALOG catalog_owner/catalog_password@catalog_db

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dba1234Author Commented:
I am not using catalog mode nad I am already connected to target database.

/home/oracle> rman TARGET/

Recovery Manager: Release 8.1.7.4.0 - Production

RMAN-06005: connected to target database: AW01 (DBID=2410801421)

RMAN> run {
allocate channel ch1 type 'sbt_tape'
PARMS="BLKSIZE=262144,ENV=(CV_mmsApiVsn=2,CV_channelPar=ch1)"
TRACE 0;
setlimit channel ch1 maxopenfiles 8;
backup archivelog all delete input ;
backup current controlfile;
RELEASE CHANNEL ch1;
}
2> 3> 4> 5> 6> 7> 8> 9>
RMAN-03022: compiling command: allocate
RMAN-03026: error recovery releasing channel resources
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure during compilation of command
RMAN-03013: command type: allocate
RMAN-06172: not connected to recovery catalog database
slightwv (䄆 Netminder) Commented:
For version 8i of Oracle try:
rman TARGET/ nocatalog
slightwv (䄆 Netminder) Commented:
I'm curious about the C grade.

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