This is resolved in CA Spectrum release 10.3 and above with changes to Archive Manager and mysql.
For CA Spectrum release 10.2.2, CA has released debug patch Spectrum_10.02.02.D403. This MUST be installed on top of Spectrum_10.02.02.BMP_10.2.202 as there is functionality in the Spectrum_10.02.02.BMP_10.2.201 that D403 needs. The release notes show:
Symptom: Arch Mgr was crashing when sql server connection gets lost.
Resolution: Added few checks to prevent the crash.
For CA Spectrum release 10.2.1, CA has released Spectrum_10.02.01.D336a. The release notes show:
SAP Archive Manager high memory
(DE298961, 00766236 )
If you need these patches, please open a case with CA Support and request them.